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MAINGEAR MG-1 MK II vs Valve Steam Machine (2026)

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Product A: MAINGEAR

MG-1 MK II

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Product B: Valve

Steam Machine (2026)

76 of 160 known

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Only differences

AMAINGEAR MG-1 MK II

BValve Steam Machine (2026)

General

6 of 9 differ

Series

MG-12Maker product pagemaingear.com/pages/mg-1Read 15 October 2026

Steam Machine1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

Not available

Not available

GTIN / EAN

Not available

Not available

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

Not available

12 November 20253Reviewifixit.com/Device/Steam_Machine_%282026%29Read 8 October 2026Background Information explicitly says announced November 12, 2025 alongside Steam Controller and Steam Frame. This is the 2026 retail device, not the 2013 prototype or third-party 2015 Steam Machines.

Status

Available1Maker product pagemaingear.com/products/custom-mg-1-mkiiRead 15 October 2026Product page is live with an add-to-cart configurator, from $2695, published 22 Apr 2026. The model is a build-to-order system, so CPU, GPU, memory, storage and board are customer choices. This file describes the reviewed Ryzen 9 9950X3D2, RTX 5090 Founders Edition, 32 GB, 2 TB configuration.

Available1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026Reference is the marketed 512 GB model without a Steam Controller. The public English store page has four distinct purchase options: 512 GB, 512 GB with Controller, 2 TB, and 2 TB with Controller. Store package 1629447 identifies the 512 GB option but is not a physical manufacturer model number. Availability is through reservation invitations and a waitlist. It does not mean unrestricted stock. Launch FAQ says purchase invitations start the week of June 29, 2026. Current iFixit repair documentation confirms June shipping.

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Not available

Not available

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

Not available

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

Not available

$1,0492Press articlepcgamer.com/hardware/gaming-pcs/steam-machine-priceRead 8 October 2026June 22, 2026 contemporaneous launch table lists 512 GB without Controller at 1049 USD and 1039 EUR. The separate controller bundle is 1128 USD / 1108 EUR and is excluded. These are announced launch prices, not later sale prices. Valve hardware billing terms separately establish US prices before sales tax and EU prices including VAT. Both 2 TB options add two faceplates, which are excluded from the 512 GB reference.11Maker product pagestore.steampowered.com/subscriber_agreementRead 8 October 2026Section 3.A, Payment Authorization explicitly covers Hardware purchases and says applicable use or sales taxes may be charged in addition to published fees. Exact Steam Machine Limited Drop Program terms confirm the product is sold at listed prices plus applicable taxes. The US 1049 USD launch figure is before location-dependent sales tax.12Maker product pagehelp.steampowered.com/en/faqs/view/5843-1C80-BF67-EC3FRead 8 October 2026Notice and Opportunity section explicitly says Steam Machine is sold for product-page listed prices plus applicable taxes. Shipping or tax charges are not included in the stored US launch MSRP.

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

Not available

€1,0392Press articlepcgamer.com/hardware/gaming-pcs/steam-machine-priceRead 8 October 202611Maker product pagestore.steampowered.com/subscriber_agreementRead 8 October 2026Section 3.A states all Steam fees in the European Union and United Kingdom include VAT, with collected VAT reflecting Hardware and other purchases. The published 1039 EUR Steam Machine launch figure is therefore VAT inclusive. No country-specific VAT conversion is performed.

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

Not available

US, EU, GB, CA, AU1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026Maker purchase FAQ identifies North America, United Kingdom/European Union, and Australia as separate shipping regions. USD, CAD, EUR, GBP and AUD launch listings corroborate the listed markets. Asian distributor markets are not included in this regional reference.

ColoursiThe maker's own colour names

Black2Maker product pagemaingear.com/pages/mg-1Read 15 October 2026Technical specifications, Chassis: MAINGEAR MG-1 Mk. II (Black).

Black4Reviewpcgamer.com/hardware/gaming-pcs/steam-machine-review-2026Read 10 October 2026Standard chassis and default front faceplate are black. Red fabric and solid walnut extra faceplates supplied with 2 TB models are not 512 GB color variants. White-background photograph depicts the default black retail assembly only.

SegmentiUse the maker's product category. Do not assign a use case from performance or appearance alone.

Gaming2Maker product pagemaingear.com/pages/mg-1Read 15 October 2026Maingear sells the MG-1 as a gaming PC, in its Prebuilt PCs range with gaming-PC product titles.

Gaming1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026

Form factoriThe maker's stated chassis class. Generic tower does not imply a full, mid or mini tower tier.

Mid tower3Maker product pagemaingear.com/products/new-mg-1-ultimateRead 15 October 2026Case: MAINGEAR MG-1 MK.II Mid Tower (Black). The launch release also calls the new chassis a mid-tower.

Small form factor1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026Core features explicitly calls the chassis Small form factor. Valve describes Steam Machine as a PC and an extension of PC gaming. The desktop type does not classify it as a home game console.

Case

8 of 10 differ

Case dimensionsiChassis width, height and depth in the stated orientation. Source notes identify feet, handles or brackets excluded by the maker. An all-in-one is measured with its included stand when the maker gives both sizes.

Width230Height475Depth498mm(9.1 × 18.7 × 19.6 in)2Maker product pagemaingear.com/pages/mg-1Read 15 October 2026The page lists 475 mm (W) x 498 mm (D) x 230 mm (H), 18.70 x 19.60 x 9.05 in. The W and H labels look swapped. The case is an upright tower with a narrow side, and the maker's older MG-1 and Zero entries list the narrow side as width. Tom's Hardware gives 18.78 x 19.65 x 9.06 in without labels. The setup guide labels 18.78 W, 19.65 H and 9.06 D. Stored as width 230, height 475 and depth 498, as the case sits on a desk. Maker rounding differs by 2 mm from the review.

Width156Height152Depth162.4mm(6.1 × 6 × 6.4 in)1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026Tech Specs, Size and Weight: 156 mm wide, 152 mm tall including feet, 162.4 mm deep. Height without feet is 148 mm. The precise labelled dimensions are used rather than the rounded 6-inch cube description.

Case volumeiVolume published by the maker. It may differ from the outer dimensions multiplied together.

Not available

Not available

WeightiPublished system weight for the stated configuration. Source notes distinguish maximum, approximate and starting weights. An all-in-one is weighed with its included stand when the maker gives both weights.

18.14kg(40 lb)4Owner's manualmaingear.com/pages/mg-1-ultimate-setup-guide-1Read 15 October 2026Specifications panel of the guide for the MG-1 Ultimate: weight approx. 40 lbs, converted exactly to 18.14 kg. That build has the same CPU, GPU and cooler as this reference configuration, with another board, memory and SSD. Maker's weight article gives about 30 lbs for the MG-1 Mk.II in general, an estimate across builds. Shopify shipping weight is 22.68 kg and includes packaging.

2.6kg(5.7 lb)1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026

Case model

MAINGEAR MG-1 Mk. II2Maker product pagemaingear.com/pages/mg-1Read 15 October 2026

Not available

Case materialsiPublished materials of the enclosure and panels, not every internal component. An edition with other panels, such as a wood front, can differ, so it is per variant.

Tempered glass7Reviewtomshardware.com/desktops/gaming-pcs/maingear-mg-1-2026-reviewRead 15 October 2026Only the tempered-glass window is stated in the open part. Other materials are not stated.

Not available

Side panel

Tempered glass7Reviewtomshardware.com/desktops/gaming-pcs/maingear-mg-1-2026-reviewRead 15 October 2026Introduction: a standard case with a tempered-glass window and a customizable face plate.

Not available

Front panel

Not available

Solid8Reviewgamersnexus.net/pre-built-pc/valve-steam-machine-review-gpu-cpu-benchmarks-steamos-test-thermals-noise-and-priceRead 10 October 2026Thermal section repeatedly identifies the factory front plate as solid. It distinguishes aftermarket perforated and filtered plates from the supplied panel.

Tool-less side paneliWhether the side panel can be opened without a tool after any shipping or security screw is removed. Conditions belong in the source note.

Not available

No5Owner's manualifixit.com/Guide/Steam+Machine+(2026)+RAM+Replacement/225338Read 8 October 2026Steps 3-8 remove rubber feet with Torx screws, two captive rear-panel Torx screws and two inner-assembly screws before extracting the chassis assembly. This is not tool-less access to system components. The front cosmetic faceplate is magnetic but is not an access side panel.

Dust filters

Yes8Reviewwindowscentral.com/gaming/pc-gaming/maingear-mg1-mk2-2026-reviewRead 15 October 2026Review of the MG-1 MK.II: the front now has a dust screen, a magnetic dust cover sits over the top panel where the AiO is mounted, and a pull-out screen covers the PSU intake at the bottom. The review unit list matches Tom's Hardware: Ryzen 9 9950X3D2, RTX 5090 FE, 32GB DDR5-6000, 2TB Samsung 9100 PRO, MSI MAG X870E Tomahawk MAX WiFi PZ, 1250W MSI MAG A1250GL. Noise of about 40 and 55 decibels and internal temperatures of 34 and 40 C are not stored, since the review gives no weighting, distance or CPU or GPU sensor.

No8Reviewgamersnexus.net/pre-built-pc/valve-steam-machine-review-gpu-cpu-benchmarks-steamos-test-thermals-noise-and-priceRead 10 October 2026Stock chassis is explicitly contrasted with the reviewer's aftermarket plate and filter. Adding that filter makes the machine filtered for dust. The reference has the factory solid plate and no aftermarket filter.

VESA mount

Not available

Not available

Display

None of 6 known

Screen sizeiActual diagonal of the primary built-in all-in-one display. Do not substitute a rounded marketed size. External bundled monitors and chassis status screens are excluded.

Not available

Not available

Native resolutioniPhysical pixel resolution of the primary built-in all-in-one display. External video-output limits, bundled monitors and chassis status screens do not qualify.

Not available

Not available

Panel typeiPublished panel technology of the primary built-in all-in-one display. A display brand name alone does not establish panel technology. External bundled monitors and chassis status screens are excluded.

Not available

Not available

Max refresh rateiHighest published refresh rate of the primary built-in display at native resolution. External video-output limits do not qualify.

Not available

Not available

TouchscreeniPublished touch-input support of the primary built-in display. A touchscreen status panel does not qualify.

Not available

Not available

Brightness (SDR, claimed)iManufacturer ordinary brightness rating of the primary built-in display. Preserve published conditions in source notes. Not HDR peak, outdoor peak or a reviewer measurement.

Not available

Not available

Motherboard

9 of 9 differ

Motherboard

MSI MAG X870E TOMAHAWK MAX WIFI PZ7Reviewtomshardware.com/desktops/gaming-pcs/maingear-mg-1-2026-reviewRead 15 October 2026

Not available

Chipset

AMD X870E12Reviewgeekawhat.com/msi-mag-x870e-tomahawk-max-wifi-pz-motherboard-reviewRead 15 October 2026X870E chipset board.

Not available

Motherboard form factoriMotherboard dimensions class, not the size of the computer case.

ATX12Reviewgeekawhat.com/msi-mag-x870e-tomahawk-max-wifi-pz-motherboard-reviewRead 15 October 2026Spec table: ATX (Reverse Connector). Dimensions are standard ATX.

Proprietary8Reviewgamersnexus.net/pre-built-pc/valve-steam-machine-review-gpu-cpu-benchmarks-steamos-test-thermals-noise-and-priceRead 10 October 2026Steam Machine 512 GB parts table identifies the motherboard, case and CPU cooler as proprietary, not standard Mini-ITX retail parts. No chassis-volume calculation or mechanical board size is substituted.

CPU socket

AM59Maker product pageamd.com/en/products/processors/desktops/ryzen/9000-series/amd-ryzen-9-9950x3d2-dual-edition.htmlRead 15 October 2026

Not available

Expansion slotsiPhysical card slots and WLAN M.2 slots. Storage M.2 slots belong in storage_slots. Mechanical slot shape and electrical lane width are separate.

AMAINGEAR MG-1 MK II

Mechanical slot type	Electrical lanes	PCIe generation	Count	Occupied
PCIe x16	16	5	1	Yes
PCIe x16	4	4	1	No
PCIe x16	1	3	1	No

Source12Reviewgeekawhat.com/msi-mag-x870e-tomahawk-max-wifi-pz-motherboard-reviewRead 15 October 2026Primary graphics slot is a full-size Gen5 x16 slot. Two more full-length slots: one Gen4 at up to x4 and one Gen3 at up to x1. Stored as mechanical x16 with the stated electrical lanes. Slot occupancy: the RTX 5090 Founders Edition is 2 slots wide, other slots are assumed free for this build with no add-in card named.

BValve Steam Machine (2026)

Not available

PCIe x16 slotsiCounts mechanically x16 card slots, including occupied slots. A slot may have fewer electrical lanes.

3=CalculatedFrom Expansion slots

Not available

Free expansion slotsiCounts slots documented as unoccupied. GPU thickness can block access to an unoccupied slot.

2=CalculatedFrom Expansion slots

Not available

Fan headersiPhysical connectors for fans on the motherboard, not the number of installed fans.

712Reviewgeekawhat.com/msi-mag-x870e-tomahawk-max-wifi-pz-motherboard-reviewRead 15 October 2026Review lists CPU_Fan, Pump/Sys Fan and Sys Fan 1, plus four additional system fan headers. The JAF PWM and RGB header is not counted.

Not available

Overclocking in BIOSiTrue when BIOS permits CPU or memory tuning. Source notes must distinguish XMP or EXPO memory tuning from CPU multiplier overclocking.

Not available

No8Reviewgamersnexus.net/pre-built-pc/valve-steam-machine-review-gpu-cpu-benchmarks-steamos-test-thermals-noise-and-priceRead 10 October 2026BIOS section states there are no overclocking options and no TDP or PPT bypasses and no memory speed or timing controls. Performance settings are limited and set inside the OS.

Processor

13 of 16 differ

Processor

AMD Ryzen 9 9950X3D2 Dual Edition7Reviewtomshardware.com/desktops/gaming-pcs/maingear-mg-1-2026-reviewRead 15 October 2026Specifications table of the review unit: AMD Ryzen 9950X3D2, MSI MAG X870E Tomahawk Max WiFi PZ, 32GB Kingston Fury Beast DDR5-6000, Nvidia GeForce RTX 5090 Founders Edition (32GB GDDR7, 2,407 MHz boost clock), 2TB Samsung 9100 Pro PCIe 5 M.2 SSD, Qualcomm FastConnect 7800 Wi-Fi 7, 1,250W MSI MAG A1250 GL, Maingear Epic 360 RGB AIO, Windows 11 Pro. Only the open parts of the page were used: the introduction and the specifications table. Review published 2026, review unit price about $7,067.

Semi-custom AMD Zen 41Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026

Processor brand

AMD9Maker product pageamd.com/en/products/processors/desktops/ryzen/9000-series/amd-ryzen-9-9950x3d2-dual-edition.htmlRead 15 October 2026

AMD1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026

Processor codenameiChip maker's processor or platform codename. This is separate from each core's architecture name.

Granite Ridge9Maker product pageamd.com/en/products/processors/desktops/ryzen/9000-series/amd-ryzen-9-9950x3d2-dual-edition.htmlRead 15 October 2026

Not available

Core configurationiOne row per stated core category. Apple super cores are distinct from performance cores. Clock values describe that category.

AMAINGEAR MG-1 MK II

Core type	Count	Core	Base clock (GHz)	Max core turbo clock (GHz)
Performance	16	Zen 5	4.3	5.6

Source9Maker product pageamd.com/en/products/processors/desktops/ryzen/9000-series/amd-ryzen-9-9950x3d2-dual-edition.htmlRead 15 October 202616 cores, Zen 5, base clock 4.3 GHz, max boost clock up to 5.6 GHz. Chip specification.

BValve Steam Machine (2026)

Count	Core	Max core turbo clock (GHz)
6	Zen 4	4.8

Source1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026General tech specs states six cores and twelve threads, Zen 4, up to 4.8 GHz and 30 W TDP. No base clock or separate core-category classification is published, so neither is assigned. The platform name Fremont is not substituted for an AMD processor codename. The 4.8 GHz maker claim is retained instead of 4.86 GHz reported by pre-release benchmark uploads.

CPU cores

16=CalculatedFrom Core configuration

6=CalculatedFrom Core configuration

Performance coresiCounts rows explicitly classified as performance cores. Apple super cores are stored separately and excluded.

16=CalculatedFrom Core configuration

Not available

Efficiency coresiCounts efficiency and low-power efficiency cores. Zero means a complete stated core configuration has no such cores.

0=CalculatedFrom Core configuration

Not available

Threads

329Maker product pageamd.com/en/products/processors/desktops/ryzen/9000-series/amd-ryzen-9-9950x3d2-dual-edition.htmlRead 15 October 2026

121Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026

Max core turbo clockiHighest core-category turbo or boost clock in cpu_clusters. Separate favored-core or processor-level boost ratings are not substituted for a category's published turbo clock.

5.6GHz=CalculatedFrom Core configuration

4.8GHz=CalculatedFrom Core configuration

L3 cache

192MB9Maker product pageamd.com/en/products/processors/desktops/ryzen/9000-series/amd-ryzen-9-9950x3d2-dual-edition.htmlRead 15 October 2026L3 Cache 192 MB. This chip has 3D V-Cache on both core dies. The peer-median warning is expected.

Not available

CPU core process nodeiPublished CPU-core fabrication node. Package components and I/O dies may use other nodes. Maker node name belongs in the source note.

4nm9Maker product pageamd.com/en/products/processors/desktops/ryzen/9000-series/amd-ryzen-9-9950x3d2-dual-edition.htmlRead 15 October 2026Processor Technology for CPU Cores: TSMC 4nm FinFET.

Not available

CPU base power (chip rating)iChip maker's base-power or default-TDP rating. It is not measured wall power or the PC maker's configured power limit.

200W9Maker product pageamd.com/en/products/processors/desktops/ryzen/9000-series/amd-ryzen-9-9950x3d2-dual-edition.htmlRead 15 October 2026Default TDP 200W. This is the chip rating, not Maingear's configured power limit.

30W1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026Published semi-custom CPU rating is 30 W TDP. It is not measured wall power or a documented configurable peak power limit.

Peak CPU power (configured)iPower limit configured by the PC maker, such as PL2 or PPT. Do not substitute the chip maker's maximum turbo-power rating.

Not available

Not available

Unlocked multiplier

Yes9Maker product pageamd.com/en/products/processors/desktops/ryzen/9000-series/amd-ryzen-9-9950x3d2-dual-edition.htmlRead 15 October 2026

Not available

NPU performanceiPublished NPU throughput only. GPU, total-system AI throughput and different precision modes are separate. Precision belongs in the source note.

Not available

Not available

Integrated GPU

AMD Radeon Graphics9Maker product pageamd.com/en/products/processors/desktops/ryzen/9000-series/amd-ryzen-9-9950x3d2-dual-edition.htmlRead 15 October 2026

Not available

Cooling

6 of 6 differ

CPU cooler

AIO liquid2Maker product pagemaingear.com/pages/mg-1Read 15 October 2026Processor cooling: MAINGEAR Epic 360 AiO Liquid Cooling or TRYX Panorama SE 360 AiO. The reviewed unit has the Epic 360. Radiator affixed to the top of the case.

Air4Reviewpcgamer.com/hardware/gaming-pcs/steam-machine-review-2026Read 10 October 2026June 22 final review describes a substantial heatsink and single 120 mm rear fan moving air across the internal components. It reviews the 2 TB controller bundle but explicitly describes the common Steam Machine chassis and processor hardware. Its game results, temperatures and other measured results are not transferred to the 512 GB model. No case-fan count is stored because this fan is attached to the shared CPU/GPU heatsink.

CPU cooler model

MAINGEAR Epic 360 RGB AIO7Reviewtomshardware.com/desktops/gaming-pcs/maingear-mg-1-2026-reviewRead 15 October 2026Maingear Epic 360 RGB AIO cooler.

Not available

Radiator size

360mm2Maker product pagemaingear.com/pages/mg-1Read 15 October 2026360 mm AiO radiator.

Not available

Radiator position

Top6Press articlecomiccrusaders.com/editorial/tech-news/maingear-unveils-the-all-new-mg-1-a-total-redesign-of-its-most-awarded-gaming-pc-everRead 15 October 2026Top-mounted 360mm AIO radiator.

Not available

Case fansiInstalled chassis airflow fans, including radiator fans. Excludes GPU, PSU and standalone CPU-cooler fans. Count fan rotors, including multiple rotors in a single-frame assembly. A mini PC whose only fan cools the processor and moves the air through the case counts that fan.

AMAINGEAR MG-1 MK II

Position	Size (mm)	Fan rotors	On radiator	RGB
Front	140	3	No	Yes
Top	120	3	Yes	Yes

Source4Owner's manualmaingear.com/pages/mg-1-ultimate-setup-guide-1Read 15 October 2026Epic 360 AiO Liquid Cooler: 3x 120mm RGB fans on the radiator. The guide lists the chassis fans as 120 mm, which conflicts with the maker's 140 mm front fans in the launch release.6Press articlecomiccrusaders.com/editorial/tech-news/maingear-unveils-the-all-new-mg-1-a-total-redesign-of-its-most-awarded-gaming-pc-everRead 15 October 2026Release: three 140mm intake fans through a large front panel intake, with a top-mounted 360mm AIO radiator that exhausts. Windows Central confirms the trio of 140mm front fans. Tom's Hardware's open table counts 4x 120 mm case fans in total. The setup guide lists 120 mm intake fans. These conflict. The maker's 140 mm is stored. A possible rear exhaust fan is not stored, because no open source states its position and size. Radiator fans: 3x 120mm RGB for the Epic 360 per the setup guide.

BValve Steam Machine (2026)

Not available

Number of case fansiSum of documented chassis and radiator fan rotors. Excludes GPU, PSU and standalone CPU-cooler fans.

6=CalculatedFrom Case fans

Not available

Graphics

10 of 11 differ

Discrete GPU

Yes10Maker product pagenvidia.com/en-us/geforce/graphics-cards/50-series/rtx-5090Read 15 October 2026

Yes1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026CPU and GPU core-features section explicitly states discrete semi-custom AMD desktop-class CPU and GPU. These are separate chips, not an integrated graphics claim. No removable graphics card or slot is implied.

GPUiDiscrete graphics chip. Integrated graphics belong in integrated_gpu.

NVIDIA GeForce RTX 509010Maker product pagenvidia.com/en-us/geforce/graphics-cards/50-series/rtx-5090Read 15 October 2026Display outputs on the card: 3x DisplayPort 2.1b and 1x HDMI 2.1b.

Semi-custom AMD RDNA 31Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026Semi-custom AMD RDNA 3 GPU with 28 compute units. Maker states 2.45 GHz maximum sustained clock, which is not labelled a boost clock and is not stored in gpu_boost_clock_mhz.

GPU brand

NVIDIA10Maker product pagenvidia.com/en-us/geforce/graphics-cards/50-series/rtx-5090Read 15 October 2026

AMD1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026

Graphics card

NVIDIA GeForce RTX 5090 Founders Edition7Reviewtomshardware.com/desktops/gaming-pcs/maingear-mg-1-2026-reviewRead 15 October 2026Founders Edition card. Boost clock 2,407 MHz as listed for this card.

Not available

VRAM

32GB10Maker product pagenvidia.com/en-us/geforce/graphics-cards/50-series/rtx-5090Read 15 October 2026

8GB1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026

VRAM type

GDDR710Maker product pagenvidia.com/en-us/geforce/graphics-cards/50-series/rtx-5090Read 15 October 2026

GDDR61Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026

GPU board poweriConfigured total board power of the installed card. A chip-family reference rating is not proof of an OEM card limit.

575W10Maker product pagenvidia.com/en-us/geforce/graphics-cards/50-series/rtx-5090Read 15 October 2026Founders Edition total graphics power 575 W. The installed card is the Founders Edition per both reviews.

110W1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026Maker GPU specification calls the 110 W envelope TDP. Matching PC Gamer final review describes it as 110 W TGP. This is the product's published GPU power envelope, not transient measured power.

GPU boost clockiPublished boost clock for the installed graphics card and mode. Do not use a measured transient clock or another board model's rating.

2,407MHz7Reviewtomshardware.com/desktops/gaming-pcs/maingear-mg-1-2026-reviewRead 15 October 2026

Not available

Graphics card length

304mm10Maker product pagenvidia.com/en-us/geforce/graphics-cards/50-series/rtx-5090Read 15 October 2026Founders Edition dimensions 304 mm (L) x 137 mm (W). Spec table says 2-slot.

Not available

Graphics card thicknessiCard thickness in PCIe bracket-slot units, such as 2.5. This is not the number of connectors or motherboard slots.

2slots10Maker product pagenvidia.com/en-us/geforce/graphics-cards/50-series/rtx-5090Read 15 October 2026

Not available

GPU power connector

16-pin (revision not stated)10Maker product pagenvidia.com/en-us/geforce/graphics-cards/50-series/rtx-5090Read 15 October 2026Power connectors: 4x PCIe 8-pin via the adapter in the box, or 1x 600 W PCIe Gen 5 cable. The connector revision is not stated, so the 16-pin type is used. Reviewed PSU has a 12+4 pin cable.

None13Owner's manualifixit.com/Guide/Steam+Machine+(2026)+Motherboard+Replacement/225348Read 10 October 2026OEM Guide shows the CPU, GPU and VRAM on one motherboard that is bonded to the heatsink and joined to the power supply by two metal prongs. The GPU is not a card and has no PCIe power connector.

Memory

8 of 11 differ

RAM

32GB7Reviewtomshardware.com/desktops/gaming-pcs/maingear-mg-1-2026-reviewRead 15 October 2026

16GB1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026

RAM type

DDR57Reviewtomshardware.com/desktops/gaming-pcs/maingear-mg-1-2026-reviewRead 15 October 2026

DDR51Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026

Configured RAM speediMemory transfer rate configured on delivery. A rated XMP or EXPO profile may be faster when it is disabled.

6,000MT/s7Reviewtomshardware.com/desktops/gaming-pcs/maingear-mg-1-2026-reviewRead 15 October 2026Table lists DDR5-6000. The maker says AMD EXPO or Intel XMP is enabled on every MAINGEAR PC, so 6000 is the speed as configured.

5,600MT/s8Reviewgamersnexus.net/pre-built-pc/valve-steam-machine-review-gpu-cpu-benchmarks-steamos-test-thermals-noise-and-priceRead 10 October 2026Review explicitly states 16 GB DDR5-5600 for both marketed storage models. The later Valve correction changes module count, not the advertised 5600 rate. This is nominal shipped memory speed, not measured RAM bandwidth or an XMP/EXPO rating.

Rated kit speediRated memory-kit or profile speed. This can differ from the speed configured on delivery.

6,000MT/s7Reviewtomshardware.com/desktops/gaming-pcs/maingear-mg-1-2026-reviewRead 15 October 2026

Not available

Memory kit

Kingston Fury Beast DDR57Reviewtomshardware.com/desktops/gaming-pcs/maingear-mg-1-2026-reviewRead 15 October 2026

Not available

RAM upgradeiHow installed memory is physically attached. Purchase-time capacity choices do not mean memory can be upgraded later.

Slots12Reviewgeekawhat.com/msi-mag-x870e-tomahawk-max-wifi-pz-motherboard-reviewRead 15 October 2026

Slots5Owner's manualifixit.com/Guide/Steam+Machine+(2026)+RAM+Replacement/225338Read 8 October 2026

Memory slotsiPhysical replaceable memory connectors, with one row per occupancy state. Package-integrated memory is not a DIMM slot.

AMAINGEAR MG-1 MK II

Slot	Count
DIMM	4

Source12Reviewgeekawhat.com/msi-mag-x870e-tomahawk-max-wifi-pz-motherboard-reviewRead 15 October 2026Four DIMM slots, max 256GB at 8400MT/s. Occupancy for the reviewed 32 GB kit is not stated and is left out.

BValve Steam Machine (2026)

Slot	Count	Occupied	Module size (GB)
SO-DIMM	1	Yes	16
SO-DIMM	1	No	Not available

Source5Owner's manualifixit.com/Guide/Steam+Machine+(2026)+RAM+Replacement/225338Read 8 October 2026Introduction confirms two physical SO-DIMM slots. One occupied 16 GB slot and one free slot reflect Valve's later June 25 correction reported by Tom's Hardware. Earlier GamersNexus text allowed either 1 x 16 GB or 2 x 8 GB, but that was explicitly corrected by Valve for shipping units. Module maker and maximum supported capacity are not fixed by these sources.6Press articletomshardware.com/video-games/console-gaming/steam-machines-will-only-come-with-one-16gb-stick-of-ram-company-may-change-this-to-two-8gb-sticks-in-the-future-but-the-first-batch-of-consoles-is-limited-to-single-channel-memoryRead 8 October 2026June 25, 2026 report publishes Valve's correction to GamersNexus: all shipping units have one 16 GB stick. Earlier statement that either one 16 GB or two 8 GB modules could be used was a mistake. Possible future batches are not stored as variants.

RAM slots

4=CalculatedFrom Memory slots

2=CalculatedFrom Memory slots

Free RAM slots

Not available

1=CalculatedFrom Memory slots

Max RAM for this CPU and GPUiMaximum stated capacity without changing the CPU or GPU configuration represented by this product. For integrated memory this is a purchase-time limit. For slot-based RAM it is the maker's supported upgrade limit.

128GB2Maker product pagemaingear.com/pages/mg-1Read 15 October 2026Up to 128GB RGB DDR5 6000MT/s. This is the maker's configurator limit. The board supports more.

Not available

ECC memoryiSystem-level ECC memory support or configuration. DDR5 on-die ECC alone does not establish this field.

Not available

Not available

Storage

7 of 7 differ

Storage

2TB=CalculatedFrom Installed drives

512GB=CalculatedFrom Installed drives

Installed drivesiInstalled drives, one row per physical drive. Capacity is in decimal GB. Use the generic SSD option when its protocol is not published. It does not establish an interface or socket. Do not represent alternative purchase capacities as installed drives.

AMAINGEAR MG-1 MK II

Capacity (GB)	Type	PCIe generation	Drive
2,000	NVMe SSD	5	Samsung 9100 PRO

Source7Reviewtomshardware.com/desktops/gaming-pcs/maingear-mg-1-2026-reviewRead 15 October 202611Maker spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_NVMe_SSD_9100_PRO_Datasheet_Rev.2.0.pdfRead 15 October 2026Samsung 9100 PRO datasheet: interface PCIe 5.0 x4 NVMe 2.0, form factor M.2 (2280). The drive model in this build comes from the Tom's Hardware and Windows Central reviews.

BValve Steam Machine (2026)

Capacity (GB)	Type
512	NVMe SSD

Source1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026Only the selected 512 GB NVMe SSD is stored. The separately sold 2 TB model and both controller bundles are excluded. No Steam Deck drive specification, SSD brand, NAND type, PCIe generation or sequential rate is borrowed.

Storage slots and baysiPhysical SSD connectors and drive bays, counted once each. Multiple supported M.2 lengths or alternative bay uses do not create extra slots.

AMAINGEAR MG-1 MK II

Form factor	Interface	PCIe generation	Count	Occupied
M.2 2280	PCIe NVMe	5	1	Yes
M.2 2280	PCIe NVMe	5	1	No
M.2 2280	PCIe NVMe	4	2	No
3.5-inch bay	SATA	Not available	2	No

Source2Maker product pagemaingear.com/pages/mg-1Read 15 October 2026Storage options: up to 8TB HDD in up to 2 bays. 'Every MG-1 comes with the additional power supply and SATA cables for 2 full-size HDDs.' Two full-size HDD bays are stored as 3.5-inch bays. M.2 sockets come from the motherboard review.12Reviewgeekawhat.com/msi-mag-x870e-tomahawk-max-wifi-pz-motherboard-reviewRead 15 October 2026Four M.2 slots, two Gen5 and two Gen4. One Gen5 socket holds the reviewed Samsung 9100 PRO. The drive generation is the PCIe 5.0 drive, and the occupied socket is taken as a Gen5 one.

BValve Steam Machine (2026)

Form factor	Interface	Count	Occupied
M.2 2230	PCIe NVMe	1	Yes

Source7Owner's manualifixit.com/Guide/Steam+Machine+(2026)+SSD+Replacement/225213Read 8 October 2026OEM Guide introduction explicitly states one M.2 NVMe socket compatible with 2230 or 2280 SSDs. Steps 9-11 remove the factory small SSD and reposition its standoff for 2280. One occupied 2230 socket is stored. The 2280 mounting position is the same socket, not another free slot. PCIe generation and electrical lanes are not stated.

M.2 slots

4=CalculatedFrom Storage slots and bays

1=CalculatedFrom Storage slots and bays

Free M.2 slots

3=CalculatedFrom Storage slots and bays

0=CalculatedFrom Storage slots and bays

Free drive bays

2=CalculatedFrom Storage slots and bays

0=CalculatedFrom Storage slots and bays

Fastest storage-slot PCIe generationiHighest documented PCIe generation of a storage slot. This does not identify the installed drive's generation.

5=CalculatedFrom Storage slots and bays

Not available

Power supply

6 of 7 differ

PSU rated outputiPower supply's rated output, or an external adapter's output rating. Maximum system consumption, peak PSU power and wall draw are separate.

1,250W13Certification listcybenetics.com/evaluations/psus/2449Read 15 October 2026MSI MAG A1250GL PCIE5: rated power 1250 W, OEM CWT.

300W8Reviewgamersnexus.net/pre-built-pc/valve-steam-machine-review-gpu-cpu-benchmarks-steamos-test-thermals-noise-and-priceRead 10 October 2026Steam Machine 512 GB parts table explicitly lists internal 300 W PSU, also confirmed by Tom's Hardware final review. Manufacturer page confirms internal 110-240 V AC supply. PSU rating is not summed CPU/GPU TDP or wall power.

PSU form factoriReplacement PSU dimensions class. Electrical standards such as ATX12VO belong in psu_atx_version. A supply built into an all-in-one is proprietary unless the maker names a standard size.

ATX13Certification listcybenetics.com/evaluations/psus/2449Read 15 October 2026Type ATX12V. The ATX 3.1 power excursion check is marked passed. The 80 PLUS Gold rating comes from the maker's configuration page. The Cybenetics ETA level is not read here.

Proprietary8Reviewgamersnexus.net/pre-built-pc/valve-steam-machine-review-gpu-cpu-benchmarks-steamos-test-thermals-noise-and-priceRead 10 October 2026Review calls the supply a custom power supply with a blade connector. The GamersNexus parts table lists an internal 300 W PSU. No standard form factor is named, so proprietary is used.

PSU efficiencyiWhen an 80 PLUS and a Cybenetics level are both published, the 80 PLUS level is stored and the Cybenetics level goes in the source note.

80 PLUS Gold3Maker product pagemaingear.com/products/new-mg-1-ultimateRead 15 October 2026MG-1 Ultimate configuration lists Power supply: MSI MAG 1250W A1250GL 80+ Gold. This is the same PSU model as in the reviewed configuration. The Ultimate is a different preconfigured build.

Not available

Modular cables

Fully modular13Certification listcybenetics.com/evaluations/psus/2449Read 15 October 2026Cable design: Fully Modular.

Not available

PSU model

MSI MAG A1250GL7Reviewtomshardware.com/desktops/gaming-pcs/maingear-mg-1-2026-reviewRead 15 October 20261,250W MSI MAG A1250 GL with black braided cable extensions. Windows Central writes 1250W MSI MAG A1250GL.

Not available

ATX version

ATX 3.113Certification listcybenetics.com/evaluations/psus/2449Read 15 October 2026ATX v3.1 PSU Power Excursion is marked passed in the report summary.

Not available

Native 12V-2x6 cableiThe supplied PSU has a native 12V-2x6 GPU cable. A generic 16-pin connector description alone does not establish its revision.

Not available

Not available

Ports

8 of 9 differ

User-facing I/O positioniLocation of the accessible front, top, side or bottom port panel.

Top2Maker product pagemaingear.com/pages/mg-1Read 15 October 2026

Front1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026

User-facing portsiAccessible front, top, side and bottom ports at the stated I/O position. Counts refer to physical connectors.

AMAINGEAR MG-1 MK II

Type	Version	Count	Max stated link rate (Gbps)
USB-A	USB 5Gbps	1	5
USB-C	USB 20Gbps	1	20
3.5 mm audio	Audio combo jack (headphone and microphone)	1	Not available

Source2Maker product pagemaingear.com/pages/mg-1Read 15 October 2026Front I/O (located on top of system): power button, reset button, 1x USB-A 5Gbps, 1x USB-C 20Gbps, 1x 3.5mm audio combo jack (headphone and microphone). The setup guide for the MG-1 Ultimate lists 10Gbps USB ports instead, which comes with that build's ASRock board. The 20 Gbps USB-C matches the MSI board header in this file.

BValve Steam Machine (2026)

Type	Version	Count
USB-A	USB 3.2 Gen 1	2
microSD card	Not available	1

Source1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026I/O tech specs explicitly states two front USB-A 3.2 Gen 1 ports. Both models also have a high-speed microSD slot. Exact final review and repair guides show the card slot on the front. The review prose sometimes calls these USB 3.0, and Tom's Hardware prose calls them Gen 2, but the maker and that review's own specification table agree on Gen 1. No link rate is inferred from the version name.4Reviewpcgamer.com/hardware/gaming-pcs/steam-machine-review-2026Read 10 October 2026

Rear portsiPhysical rear connectors, including motherboard and discrete-GPU outputs. Source notes identify disabled onboard video ports and any incomplete GPU output evidence. A video input, such as HDMI in on an all-in-one, is Other. AC power input is a mains inlet, such as C14, for a built-in power supply. DC in is for an external adapter.

AMAINGEAR MG-1 MK II

Type	Version	Count	Max stated link rate (Gbps)	Thunderbolt or USB4	Connected to
USB-C	USB4	2	40	USB4	Motherboard
USB-C	USB 3.2 Gen 2	1	10	Not available	Motherboard
USB-A	USB 3.2 Gen 2	2	10	Not available	Motherboard
USB-A	USB 3.2 Gen 1	3	5	Not available	Motherboard
USB-A	USB 2.0	4	0.48	Not available	Motherboard
Ethernet (RJ45)	Not available	1	5	Not available	Motherboard
HDMI	Not available	1	Not available	Not available	Motherboard
Mic in	Not available	1	Not available	Not available	Motherboard
Line out	Not available	1	Not available	Not available	Motherboard
Optical S/PDIF	Not available	1	Not available	Not available	Motherboard
Wi-Fi antenna	Not available	Not available	Not available	Not available	Motherboard
DisplayPort	Not available	3	Not available	Not available	Graphics card
HDMI	Not available	1	Not available	Not available	Graphics card

Source7Reviewtomshardware.com/desktops/gaming-pcs/maingear-mg-1-2026-reviewRead 15 October 2026Rear Ports (Motherboard) row: HDMI, 2x USB-A 10Gbps, 3x USB-A 5Gbps, 4x USB-A 2.0, 2x USB-C 40Gbps, Ethernet, USB-C 10 GBps, Mic in, Line Out, Optical S/PDIF Out. Video Output (GPU): HDMI, 3x DisplayPort. The HDMI on the motherboard is listed by the review. The maker's guide says motherboard video outputs do not use the RTX card. Antenna connector count is not stated.

BValve Steam Machine (2026)

Type	Version	Count	Max stated link rate (Gbps)	Connected to
USB-A	USB 2.0 High Speed	2	Not available	Not available
USB-C	USB 3.2 Gen 2	1	10	Not available
DisplayPort	1.4	1	Not available	Graphics card
HDMI	2.0	1	Not available	Graphics card
Ethernet (RJ45)	Not available	1	1	Not available
AC power input	Not available	1	Not available	Not available

Source1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026One DisplayPort 1.4, one HDMI 2.0, two USB-A 2.0 High Speed, one USB-C 3.2 Gen 2, one Gigabit Ethernet and one AC power input. PC Gamer confirms Type-C data rate 10 Gbps and final photographs confirm physical counts. Display outputs serve the discrete AMD GPU. Maker advertises DP up to 4K 240 Hz or 8K 60 Hz and HDMI up to 4K 120 Hz, with HDR and FreeSync. HDMI also supports CEC and DP supports daisy-chaining. These are output claims, not measured rendering frame rates. Chroma and DSC conditions are not specified, so no unsupported display mode table is added.4Reviewpcgamer.com/hardware/gaming-pcs/steam-machine-review-2026Read 10 October 2026

User-facing USB portsiPhysical USB-A and USB-C connectors on the accessible front, top, side or bottom panel.

2=CalculatedFrom User-facing ports

2=CalculatedFrom User-facing ports

User-facing USB-C portsiPhysical USB-C connectors on the accessible front, top, side or bottom panel, including Thunderbolt and USB4 sockets.

1=CalculatedFrom User-facing ports

0=CalculatedFrom User-facing ports

Rear USB ports

12=CalculatedFrom Rear ports

3=CalculatedFrom Rear ports

ThunderboltiThunderbolt documented in the rear-port table. Front-panel-only Thunderbolt is not covered by this derived field.

No=CalculatedFrom Rear ports

Not available

Ethernet speed

5Gbps=CalculatedFrom Rear ports

1Gbps=CalculatedFrom Rear ports

Discrete GPU output portsiCounts rear connectors explicitly attributed to the discrete graphics card. A partial rear-port table cannot establish the card's complete output count.

4=CalculatedFrom Rear ports

Not available

Wireless

5 of 6 differ

Wi-Fi

Wi-Fi 72Maker product pagemaingear.com/pages/mg-1Read 15 October 2026Connectivity: up to 10Gb LAN, Thunderbolt 4 on select motherboards, WiFi 7, Bluetooth 5.4.

Wi-Fi 6E1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026

Wi-Fi bandsiBands explicitly supported by the installed radio and product region. Do not infer 6GHz use solely from a Wi-Fi version.

2.4 GHz, 5 GHz, 6 GHz14Maker spec sheet (PDF)qualcomm.com/content/dam/qcomm-martech/dm-assets/documents/Qualcomm-FastConnect-7800-product-brief_87-PW329-1-B.pdfRead 15 October 2026Product brief: Wi-Fi spectral bands 2.4GHz, 5GHz, 6GHz. Chip specification. The module is named by Tom's Hardware.

Not available

Wi-Fi module

Qualcomm FastConnect 78007Reviewtomshardware.com/desktops/gaming-pcs/maingear-mg-1-2026-reviewRead 15 October 2026

Not available

Wi-Fi antenna

External, included4Owner's manualmaingear.com/pages/mg-1-ultimate-setup-guide-1Read 15 October 2026Setup guide for the MG-1 Ultimate: the Wi-Fi antenna is in the accessory box and attaches to the gold connectors on the rear I/O panel.

Internal4Reviewpcgamer.com/hardware/gaming-pcs/steam-machine-review-2026Read 10 October 2026Final hardware review and OEM repair guides document antennas inside the chassis. No external user-installed Wi-Fi antenna is included. Wi-Fi bands and radio module model are not inferred from Wi-Fi 6E alone.5Owner's manualifixit.com/Guide/Steam+Machine+(2026)+RAM+Replacement/225338Read 8 October 2026Steps 15-22 show MAIN ANT and AUX ANT inside the fan assembly, with internal cables. Dedicated Bluetooth antenna is separate from the Wi-Fi main/aux antennas.

Bluetooth

5.42Maker product pagemaingear.com/pages/mg-1Read 15 October 2026

5.31Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026Maker and PC Gamer review body state Bluetooth 5.3 with dedicated antenna. PC Gamer summary table's Bluetooth 5.2 entry conflicts with its own text and is excluded. Built-in 2.4 GHz Steam Controller radio does not mean a controller is supplied.

Ethernet controller

Not available

Not available

Camera and audio

None of 5 known

WebcamiPublished built-in camera description and resolution. Keep sensor megapixels, video resolution and named camera features distinct in the source note. External bundled cameras do not qualify.

Not available

Not available

Built-in speaker driversiPhysical built-in acoustic drivers, including separate tweeters and woofers. Audio channels, system beepers and external bundled speakers do not count. Do not infer driver count from speaker assemblies.

Not available

Not available

Total speaker poweriManufacturer stated combined output of the built-in speakers. Preserve power basis in source notes. PSU ratings and external speaker output do not qualify.

Not available

Not available

MicrophonesiPhysical built-in microphones. Beamforming channels and microphone modes do not count.

Not available

Not available

Audio featuresiPublished built-in audio capabilities and their required software or accessories. Do not infer hardware from an audio brand name.

Not available

Not available

Lighting

1 of 4 differ

RGB lighting

Yes2Maker product pagemaingear.com/pages/mg-1Read 15 October 2026Diffused RGB by design: front panel trim, internal light bar and inward-facing RGB fans. Marked on the page as standard.

Yes1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026

Lit parts

Case fans, Case strip, Front panel, CPU cooler2Maker product pagemaingear.com/pages/mg-1Read 15 October 2026Fully diffused RGB from the front panel trim, an integrated internal lightbar and inward-facing RGB fans. The Epic 360 RGB AIO is named by Tom's Hardware.

Case strip1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026Published 17 individually addressable RGB LEDs form one status strip, with configurable colors and animations. LED count is not a count of independent physical lighting zones. No 5 V ARGB connector standard is inferred.

Lighting standardiNamed physical RGB control or connector standard. ARGB lighting alone does not prove a 5V header or a standard connector.

Not available

Not available

Lighting software

Not available

Not available

Software

2 of 3 differ

Operating system

Windows 11 Pro7Reviewtomshardware.com/desktops/gaming-pcs/maingear-mg-1-2026-reviewRead 15 October 2026Review unit lists Windows 11 Pro. The maker lists Windows 11 Home and Pro as options.

SteamOS 3 (Arch-based Linux, KDE Plasma desktop)1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026Software tech specs states SteamOS 3, Arch-based, with KDE Plasma desktop. Current firmware subversion and optional Windows installations are not part of the shipped OS reference.

OS family

Windows2Maker product pagemaingear.com/pages/mg-1Read 15 October 2026Operating Systems: Windows 11 Home and Windows 11 Pro.

Linux1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026

Control software

Not available

Not available

Upgradeability

3 of 4 differ

Proprietary partsiParts or interfaces the maker or teardown identifies as requiring nonstandard replacements. Do not infer from a brand label alone.

Not available

Motherboard, PSU, Case, CPU cooler8Reviewgamersnexus.net/pre-built-pc/valve-steam-machine-review-gpu-cpu-benchmarks-steamos-test-thermals-noise-and-priceRead 10 October 2026Review directly calls motherboard, CPU cooler and case proprietary. OEM power-supply repair manual separately shows custom metal-prong board connection and chassis-specific supply. These claims do not imply proprietary DDR5 SO-DIMMs or NVMe SSDs. Unverified proprietary fan/header standards are omitted.9Owner's manualifixit.com/Guide/Steam+Machine+(2026)+Power+Supply+Replacement/225339Read 8 October 2026OEM Guide disassembly and board/supply separation steps show the motherboard joining the chassis-specific internal power supply through two metal prongs. This proves a proprietary electrical interface, not a PSU dimensional class. PSU form factor remains unavailable. No 80 PLUS or Cybenetics efficiency level is asserted.

Max graphics card length

390mm2Maker product pagemaingear.com/pages/mg-1Read 15 October 2026Supports GPUs up to 390mm.

Not available

Max CPU cooler height

Not available

Not available

Warranty kept after upgradeiWhether the maker keeps the warranty after a user upgrade under the stated terms and market. Damage exclusions alone do not mean all warranty is void.

Not available

Yes10Maker product pagehelp.steampowered.com/en/faqs/view/4E41-6123-79EF-25BARead 8 October 2026Exclusion 3.0(1) denies coverage when an unauthorized modification or repair caused the issue or damage being claimed. An unrelated user upgrade does not automatically void all warranty. Upgrade-caused damage is excluded under US limited-warranty terms.

Measured performance

1 of 8 differ

Cinebench 2024 single-coreiMeasured by a reviewer, not claimed by the maker

Not available

Not available

Cinebench 2024 multi-coreiMeasured by a reviewer, not claimed by the maker

Not available

Not available

Geekbench single-coreiMeasured by a reviewer, not claimed by the maker

Not available

Not available

Geekbench multi-coreiMeasured by a reviewer, not claimed by the maker

Not available

Not available

3DMark Time Spy graphicsiMeasured by a reviewer, not claimed by the maker

Not available

Not available

3DMark Steel NomadiMeasured by a reviewer, not claimed by the maker

Not available

Not available

SSD sequential read (measured)iReviewer's sequential read test. A file-copy rate or maker's SSD rating is not a sequential read measurement. Test method belongs in the source note.

Not available

Not available

Game frame ratesiReviewer measurements for this CPU, GPU, memory, storage and cooling configuration. Resolution, preset, ray tracing, upscaling and frame generation conditions belong in rows or source notes.

AMAINGEAR MG-1 MK II

Not available

BValve Steam Machine (2026)

Game	Width (px)	Height (px)	Preset	Upscaling	Ray tracing	Average FPS	1 % low FPS
Resident Evil 4 (2023)	1920	1080	Prioritize Graphics	Not available	Not available	94	Not available
Black Myth: Wukong	1920	1080	High	Not available	Not available	43.9	Not available
Starfield	1920	1080	Ultra	Not available	Not available	41	25
The Elder Scrolls IV: Oblivion Remastered	1920	1080	Ultra Raster, Low SoftwareRT	Off	Not available	27	Not available
Kingdom Come: Deliverance II	1920	1080	Ultra	Not available	Not available	50	Not available
Dragon's Dogma 2	1920	1080	Max	Not available	Not available	52	Not available
Final Fantasy XIV: Dawntrail benchmark	1920	1080	Maximum	Not available	Not available	86	Not available
The Outer Worlds 2	1920	1080	Very High, SoftwareRT	Not available	Not available	26	Not available
Cyberpunk 2077: Phantom Liberty	1920	1080	Ultra	Not available	Not available	59	Not available
Cyberpunk 2077: Phantom Liberty	1920	1080	RT Medium	Not available	Yes	22.8	Not available
Black Myth: Wukong	1920	1080	High raster, Medium RT	FSR Quality	Yes	16.7	Not available
Avatar: Frontiers of Pandora	2560	1440	Ultra	Not available	Not available	21	17
Baldur's Gate 3	2560	1440	Ultra	Not available	Not available	46	26
Metro Exodus Enhanced Edition	2560	1440	Ultra	Not available	Not available	45	30
Cyberpunk 2077	2560	1440	RT Medium	Not available	Yes	16	12
Cyberpunk 2077	2560	1440	RT Medium	FSR Quality	Yes	28	20
Black Myth: Wukong	2560	1440	Very High	Not available	Not available	20	16
Black Myth: Wukong	2560	1440	Very High	Quality upscaling	Not available	31	26

Source4Reviewpcgamer.com/hardware/gaming-pcs/steam-machine-review-2026Read 10 October 2026PC Gamer tested the 2 TB Steam Controller bundle. Valve and Tom's Hardware state that the 512 GB and 2 TB models are identical apart from storage, so CPU, GPU, memory and cooling match. The 1440p rows come from PC Gamer's gaming benchmark suite and the Steam Machine is the first entry of each chart. Cyberpunk 2077 uses RT Medium and the review text names FSR Quality with no frame generation for the upscaled run. The review does not name the upscaler for Black Myth: Wukong. Other rows do not state upscaling.8Reviewgamersnexus.net/pre-built-pc/valve-steam-machine-review-gpu-cpu-benchmarks-steamos-test-thermals-noise-and-priceRead 10 October 2026GamersNexus tested the 512 GB model on SteamOS with MangoHud, out of the box. Resolution and settings come from the chart titles. Every row is average FPS. The 1 percent low is stored only where the text states it. Starfield 1% low is 25 FPS (0.1% low 18). Cyberpunk 2077 RT Medium is 22.8 FPS after Valve's last-minute ray tracing patch (20.7 before). Black Myth: Wukong 1080p High raster with Medium RT and FSR Quality is 16.7 FPS after the patch (13.8 before). The Oblivion Remastered text says no upscaling. Other rows do not state upscaling. Rows with SoftwareRT in the preset use software ray tracing and have no ray_tracing flag.

Measured noise and temperature

5 of 6 differ

Fan noise per loadiMeasured by a reviewer, not claimed by the maker

AMAINGEAR MG-1 MK II

Not available

BValve Steam Machine (2026)

Profile	Load	Distance (cm)	Noise (dB(A))
Stock solid front panel, auto fan curve, about 1252 RPM	Max load	100	23.5

Source8Reviewgamersnexus.net/pre-built-pc/valve-steam-machine-review-gpu-cpu-benchmarks-steamos-test-thermals-noise-and-priceRead 10 October 2026Hemi-anechoic chamber at 1 m, stock solid front panel, feet installed, auto fan about 1252 RPM. The 30-minute burn-in held 23 to 24 dBA and the 1 m figure is stated as 23.5 dBA in the thermal section. Chart titles name the thermal and acoustic runs thermal torture and under load. The Black Myth: Wukong gaming run is stated only as about 20 to 21 dBA, so it is not stored as a row. Idle is stated as the room noise floor with no dBA value.

Highest measured fan noiseiHighest measured row in fan_noise_measured, not a theoretical maximum. Compare only at the same distance and test conditions.

Not available

23.5dB(A)=CalculatedFrom Fan noise per load

Measured fan noise at idleiHighest documented idle row in fan_noise_measured. Distance and ambient noise floor belong in the source note.

Not available

Not available

CPU temperature in stress testiCPU temperature measured during the named sustained load. Source notes distinguish gaming loops from synthetic CPU or combined stress tests.

Not available

70°C8Reviewgamersnexus.net/pre-built-pc/valve-steam-machine-review-gpu-cpu-benchmarks-steamos-test-thermals-noise-and-priceRead 10 October 2026Default Tctl is 50 degrees over ambient, about 70 degrees with ambient, in the thermal torture run (stock panel, auto fan about 1252 RPM). The review gives the absolute value as approximate.

CPU clock in stress testiSustained all-core CPU clock under the stated test. A P-core-only average is not a whole-CPU all-core clock.

Not available

3.467GHz8Reviewgamersnexus.net/pre-built-pc/valve-steam-machine-review-gpu-cpu-benchmarks-steamos-test-thermals-noise-and-priceRead 10 October 2026Average all-core clock under the same thermal torture run with the stock panel at 1252 RPM is 3467 MHz (highest core 4001 MHz). GamersNexus notes this is after the clock drop from the TDP limiter. The review logged 12 logical processors.

GPU temperature while gamingiMeasured by a reviewer, not claimed by the maker

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65°C4Reviewpcgamer.com/hardware/gaming-pcs/steam-machine-review-2026Read 10 October 2026Gaming temperatures table of the 2 TB bundle: average GPU 65 C and maximum GPU 69 C. The average is stored. The review does not name the game loop or the sensor.

Measured power

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Power draw idleiMeasured system power at the wall at idle. Certification or maker claims are not reviewer measurements.

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13W8Reviewgamersnexus.net/pre-built-pc/valve-steam-machine-review-gpu-cpu-benchmarks-steamos-test-thermals-noise-and-priceRead 10 October 2026Wall power, full system, 13 W at idle before the Black Myth: Wukong benchmark loop.

Power draw gamingiMeasured system power at the wall during the stated game and settings.

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176W8Reviewgamersnexus.net/pre-built-pc/valve-steam-machine-review-gpu-cpu-benchmarks-steamos-test-thermals-noise-and-priceRead 10 October 2026Wall power during the looping Black Myth: Wukong benchmark tool. It ramped from 173 W to 176 W in each loop, with dips to about 50 W between loops. The top of that range is stored. The review text also calls it about 170 to 180 W.

Power draw maxiMeasured power at the wall during combined CPU and GPU stress. A PSU rating or game-only load is not this value.

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209W8Reviewgamersnexus.net/pre-built-pc/valve-steam-machine-review-gpu-cpu-benchmarks-steamos-test-thermals-noise-and-priceRead 10 October 2026Wall power for the full torture test with Blender on the CPU and FurMark on the GPU. Peak 209 W, then 192 W after a couple of minutes when CPU clocks dropped. The 300 W PSU rating is separate.

Power draw sleep or offiMeasured power at the wall with the stated sleep or off mode. These modes must be identified in the source note.

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1W8Reviewgamersnexus.net/pre-built-pc/valve-steam-machine-review-gpu-cpu-benchmarks-steamos-test-thermals-noise-and-priceRead 10 October 2026Review states the machine draws 1 W or less in standby. Published as 1 W or less. The machine stays on to wake from a paired Steam Controller.

Sustained CPU power (measured)iMeasured by a reviewer, not claimed by the maker

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GPU power while gaming (measured)iMeasured by a reviewer, not claimed by the maker

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Certifications

None of 5 known

ENERGY STARiExplicit certification status for the model or defined configuration scope. Absence from a search result is not proof of false.

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EPEATiPublished registration level. Missing registration evidence is not proof of none.

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Copilot+ PC

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Typical annual energy consumption (TEC)iStandardized TEC from the named ENERGY STAR or EU product-information record. It is not a prediction of an individual user's annual energy use.

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Other certifications

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In the box

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In the boxiItems supplied with this exact configuration. Optional accessories and configurator add-ons are not guaranteed included.

Wi-Fi 7 and Bluetooth 5.4 antenna, AC power cable4Owner's manualmaingear.com/pages/mg-1-ultimate-setup-guide-1Read 15 October 2026Setup guide: accessory box with the Wi-Fi antenna, and an AC power cable included. Other items are not listed. Written for the MG-1 Ultimate.

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Included extrasiExtras confirmed supplied with the exact configuration. Optional bundles are excluded.

Wi-Fi antennas, GPU support bracket4Owner's manualmaingear.com/pages/mg-1-ultimate-setup-guide-1Read 15 October 2026Antenna: setup guide. GPU bracket: the maker's MG-1 page says every MG-1 features a custom fitted GPU bracket that removes with a screwdriver.

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Warranty

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Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

1year2Maker product pagemaingear.com/pages/mg-1Read 15 October 2026Warranty: 1-year standard coverage, upgradable to 3-year coverage. Lifetime phone and email support. US market.

1year10Maker product pagehelp.steampowered.com/en/faqs/view/4E41-6123-79EF-25BARead 8 October 2026General Valve Hardware Limited Warranty covers Valve hardware products without limitation and gives one year from shipment for the US reference. It explicitly does not apply to EU, UK, Quebec, Australia or New Zealand consumers, who receive local statutory guarantees instead. One year is not a global statutory-warranty claim.

Warranty service

Mail-in5Maker product pagemaingear.com/pages/warranty-policyRead 15 October 2026Warranty policy: systems are repaired by MAINGEAR with remote diagnostics and advance-swap parts when it makes sense. Maingear pays ground shipping to it in the first 30 days, then the customer pays. This is read as mail-in service.

Mail-in10Maker product pagehelp.steampowered.com/en/faqs/view/4E41-6123-79EF-25BARead 8 October 2026Section 2.0 provides US return shipping address, prepaid label and RMA after authorization, with hardware shipped to a designated service centre. Mail-in is the US reference service. Other markets use the retail return point or Valve's instructions.

Links

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Product page

maingear.com/products/custom-mg-1-mkii1Maker product pagemaingear.com/products/custom-mg-1-mkiiRead 15 October 2026

store.steampowered.com/hardware/steammachine1Maker product pagestore.steampowered.com/hardware/steammachineRead 8 October 2026

Spec sheet

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Manual

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www.ifixit.com/Guide/Steam+Machine+(2026)+RAM+Replacement/2253385Owner's manualifixit.com/Guide/Steam+Machine+(2026)+RAM+Replacement/225338Read 8 October 2026Manufacturer-partner iFixit guide labelled OEM Guide on the device page. Introduction explicitly documents two DDR5-5600 SO-DIMM sockets. No separate public Valve user-manual PDF or datasheet was found. This is the exact 2026 repair manual, not a Steam Deck or 2013 prototype document.

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

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Both are also in the API. Back to all desktop PCs.