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MSI MAG B850 TOMAHAWK MAX WIFI vs NZXT N9 X870E

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Product A: MSI

MAG B850 TOMAHAWK MAX WIFI

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Product B: NZXT

N9 X870E

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Only differences

AMSI MAG B850 TOMAHAWK MAX WIFI

BNZXT N9 X870E

General

5 of 9 differ

Series

MAG1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Cover: MAG Series Motherboard.

N94Reviewpcunboxing.com/enRead 15 October 2026PC Unboxing (2025-04-01) places the N9 above NZXT's earlier N5 and N7 boards.

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

MAG B850 TOMAHAWK MAX WIFI, 911-7E62-0021Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 202611Maker product pagede-store.msi.com/products/mag-b850-tomahawk-max-wifiRead 14 October 2026MSI's German e-shop: SKU 911-7E62-002.

N9-X87XT-W1, N9-X87XT-B11Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Spec table: N9-X87XT-W1 (White) and N9-X87XT-B1 (Black).

GTIN / EAN

47113772906232Retailer pageshop.sumanet.cz/mag-b850-tomahawk-max-wifi-msi-mb-sc-am5-mag-b850-tomahawk-max-wifi-amd-b850-4xddr5-1xhdmi-wifi-atxRead 14 October 2026GTIN (EAN) 4711377290623 for type designation MAG B850 TOMAHAWK MAX WIFI. hinta.fi lists the same code.11Maker product pagede-store.msi.com/products/mag-b850-tomahawk-max-wifiRead 14 October 2026Same page: GTIN-13 4711377290623.

810074847292, 810074847308, 5056547207254, 50565472072611Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Spec table: UPC 810074847292 (White) and 810074847308 (Black). EAN 5056547207254 (White) and 5056547207261 (Black).

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

Not available

30 September 20247Press releaseigorslab.de/en/nzxt-presents-the-n9-x870e-powerful-atx-motherboard-for-amds-ryzen-9000-series-press-releaseRead 15 October 2026Igor's Lab press release published 2024-10-01 states NZXT announced the board on 2024-09-30, with global availability expected in Q1 2025.

Status

Not available

Available1Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026NZXT's own store page sells the board on 2026-10-15 at $499.99.

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

$499.995Reviewpcgamer.com/hardware/motherboards/nzxt-n9-x870e-reviewRead 15 October 2026Spec box (2025-07-03 review): Price $500 | £410 | AU$848. The text calls it a $500 X870E board.6Reviewcgmagonline.com/review/nzxt-n9-x870e-motherboardRead 15 October 2026Review dated 2025-06-28 lists MSRP $499.99. The currency is not named. NZXT's US store lists the same amount. Sales tax excluded.

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

Not available

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

Not available

Not available

ColoursiThe maker's own colour names

Not available

White, Black1Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Store page colour selector: White and Black.

SegmentiThe maker's own product category, e.g. ASUS ProArt is Creator. It is not assigned from price or features. Maker lines that are not gaming, creator or workstation lines, such as ASUS PRIME, MSI PRO and ASRock Pro, are mainstream.

Gaming2Retailer pageshop.sumanet.cz/mag-b850-tomahawk-max-wifi-msi-mb-sc-am5-mag-b850-tomahawk-max-wifi-amd-b850-4xddr5-1xhdmi-wifi-atxRead 14 October 2026The listing repeats MSI's text: designed for gamers with a stable, durable and DIY friendly foundation.

Gaming1Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Page title: AMD X870E ATX Gaming Wi-Fi 7 Motherboard.

Board revisioniThe maker's revision name, e.g. rev. 1.1, for variant rows of revisions that keep the board's name and model number. Leave it out when the maker names no revision.

Not available

Not available

Platform

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CPU socketiSocket name without spaces, e.g. AM5 or LGA1851.

AM51Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026

AM51Maker product pagenzxt.com/product/n9-x870eRead 15 October 20262Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026

ChipsetiChipset with its brand and without the word chipset, e.g. AMD B850, AMD X870E or Intel Z890. Same form as desktop PCs and as compatible chipsets on CPUs.

AMD B8501Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026

AMD X870E1Maker product pagenzxt.com/product/n9-x870eRead 15 October 20262Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026

Supported processorsiProcessor series the maker lists for the board, one item per series in the chip maker's name. BIOS updates can add series later.

AMD Ryzen 9000 Series, AMD Ryzen 8000 Series, AMD Ryzen 7000 Series1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Specifications chapter, page 17: Ryzen 9000, 8000 and 7000 Series Desktop Processors. The manual refers to msi.com for the newest support status. Read on 2026-10-14.

AMD Ryzen 9000 Series, AMD Ryzen 8000 Series, AMD Ryzen 7000 Series1Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Spec table: AMD Socket AM5 for Ryzen 9000, 8000 and 7000 series. The page says BIOS 3.20 or later is needed for the Ryzen 7 9800X3D. Read on 2026-10-15.2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026Specifications, CPU and socket: AMD Socket AM5 Ryzen 9000, 8000 and 7000 Series Processors.

CPU overclockingiThe board allows multiplier overclocking of an unlocked CPU. Memory overclocking alone does not count.

Yes6Reviewprofesionalreview.com/2025/02/11/msi-mag-b850-tomahawk-max-wifi-reviewRead 14 October 2026States the B850 board comes with overclocking capability.8Reviewguru3d.com/review/msi-mag-b850-tomahawk-max-wifi-review-great-performance-and-valueRead 14 October 2026Page 1: the board offers decent overclocking headroom for both the CPU and memory.

Yes1Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Overview: overclocking-ready power. The page names no multiplier overclocking feature, so the chip maker's X870E page is the main source.4Reviewpcunboxing.com/enRead 15 October 2026The BIOS has an Overclocking Tools tab with processor overclocking functions.9Maker product pageamd.com/en/products/processors/chipsets/am5.htmlRead 15 October 2026AMD's chipset page describes the X870E as having robust overclocking capabilities, and its comparison table has a Ryzen processor overclocking enabled column. NZXT's page says the board has overclocking-ready power.

Board

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Form factoriThe maker's stated board standard. Other covers sizes such as XL-ATX or Mini-DTX.

ATX1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026

ATX1Maker product pagenzxt.com/product/n9-x870eRead 15 October 20262Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026Specifications, form factor: ATX 12.0 in x 9.6 in, 30.5 cm x 24.4 cm.

Board dimensionsiSize of the board itself. Height runs along the rear I/O edge, as the board stands in a tower case. ATX is 244 mm wide and 305 mm high. Micro ATX is 244 mm high and up to 244 mm wide. A size with a cover that reaches past the board, as NZXT prints, is not used when the maker also states the board size.

Width244Height305mm(9.6 × 12 in)1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Specifications chapter: ATX form factor, 9.6 in. x 12 in. (244 mm x 305 mm).

Width244Height305mm(9.6 × 12 in)2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026Specifications, form factor: ATX 30.5 cm x 24.4 cm, stored as height 305 mm along the rear I/O edge and width 244 mm. The product page's 309.34 x 254.44 x 49.39 mm includes the full metal cover and is not used.

PCB layersiCopper layers in the circuit board as published.

84Reviewtomshardware.com/pc-components/motherboards/msi-mag-b850-tomahawk-max-wifi-motherboard-reviewRead 14 October 2026Black 8-layer server-grade PCB.6Reviewprofesionalreview.com/2025/02/11/msi-mag-b850-tomahawk-max-wifi-reviewRead 14 October 20268-layer server-grade PCB with 2 oz copper traces.9Reviewtech4gamers.com/msi-mag-b850-tomahawk-max-wifi-reviewRead 14 October 20268-layered NPG-170D server-grade PCB with 2oz thickened copper.

81Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Overview: an 8-layer, low-loss 2-oz copper PCB.

Back-connect designiPower, fan and front-panel connectors sit on the back of the board to hide the cables, e.g. ASUS BTF, MSI Project Zero or GIGABYTE Stealth. It needs a case made for it.

No1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Component overview pages 28 to 50 show the usual front-side connector layout. The board is not an MSI Project Zero model.

No2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026The connector legend shows the usual front-side connectors (ATX_POWER, SATA 1-4, USB headers, SYS_FAN). The board is not a back-connect design.

RGB lighting on the boardiLEDs on the board itself. Headers for external lighting are counted under Internal connectors. True only when the maker's spec or feature list names lighting on the board. A single small LED that a reviewer sees does not count.

No4Reviewtomshardware.com/pc-components/motherboards/msi-mag-b850-tomahawk-max-wifi-motherboard-reviewRead 14 October 2026RGB lovers must add their own to the headers, as none are built in.9Reviewtech4gamers.com/msi-mag-b850-tomahawk-max-wifi-reviewRead 14 October 2026There is no onboard RGB, but there are multiple RGB headers.

Yes1Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Overview: full-metal cover with subtle RGB lighting, onboard customizable RGB lighting.4Reviewpcunboxing.com/enRead 15 October 2026NZXT added light bars on the board, set through NZXT CAM.

Power delivery

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Power stage layoutiAs the maker publishes it, e.g. 18+2+2. The first number is the CPU core (Vcore) rail. Makers group the other rails differently, so compare the first number. Doubled or teamed stages are written as the maker prints them, such as MSI's 12+2+1 Duet Rail. A review's count of real phases goes in the source note.

14+2+13Reviewkitguru.net/components/motherboard/leo-waldock/msi-mag-b850-tomahawk-max-wifi-reviewRead 14 October 2026Key features list, as in MSI's text: 14+2+1 Duet Rail Power System with 80A Smart Power Stages.6Reviewprofesionalreview.com/2025/02/11/msi-mag-b850-tomahawk-max-wifi-reviewRead 14 October 202614 phases for Vcore, 2 for SoC and 1 for Misc.

20+2+11Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Overview: a 20+2+1 power phase design with 110A SPS. Igor's Lab counts a fourth rail, 20+2+1+1, in its teardown.

CPU core (Vcore) power stagesiPower stages on the Vcore rail. Makers call them phases or power stages. A doubled design has more stages than controller phases. Use the first number of the maker's layout, such as 14 for MSI's 14+2+1 Duet Rail. A review's different count goes in the source note.

143Reviewkitguru.net/components/motherboard/leo-waldock/msi-mag-b850-tomahawk-max-wifi-reviewRead 14 October 2026VRMs: 14+2+1 x 80A Smart Power Stages.4Reviewtomshardware.com/pc-components/motherboards/msi-mag-b850-tomahawk-max-wifi-motherboard-reviewRead 14 October 202617 phases with 14 dedicated to Vcore. 14 x 80 A gives the 1,120 A the review states.6Reviewprofesionalreview.com/2025/02/11/msi-mag-b850-tomahawk-max-wifi-reviewRead 14 October 2026The review counts 16 MPS2433 80 A stages for Vcore and SoC, which fits 14 Vcore stages plus 2 SoC stages.

201Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Overview: 20+2+1 design. Igor's Lab teardown counts 20 Renesas power stages on the Vcore rail.3Reviewigorslab.de/en/nzxt-n9-x870e-am5-motherboard-review-solid-optical-minimalism-at-a-proud-price-with-teardown-and-material-testRead 15 October 2026Igor's Lab teardown (2025-05-01): 20 Renesas smart power stages for the Vcore rail, plus 2 for SoC. The review counts a fourth rail, 20+2+1+1. The VRM controller is left out: Igor's Lab reads Renesas RAA229628 and PC Unboxing reads RAA228228 plus RAA229621.

Vcore power stage ratingiCurrent rating of each Vcore power stage. Only a figure the maker or a copy of the maker's text states. A review's reading of the chip markings is not enough.

80A3Reviewkitguru.net/components/motherboard/leo-waldock/msi-mag-b850-tomahawk-max-wifi-reviewRead 14 October 202680 A. The Scan listing says 60 A, which no review or MSI text supports.4Reviewtomshardware.com/pc-components/motherboards/msi-mag-b850-tomahawk-max-wifi-motherboard-reviewRead 14 October 202680A MPS MPS2433 SPS MOSFETs.6Reviewprofesionalreview.com/2025/02/11/msi-mag-b850-tomahawk-max-wifi-reviewRead 14 October 20267Reviewhwcooling.net/en/si-mag-b850-tomahawk-max-wifi-cheaper-chipset-but-better-features-reviewRead 14 October 2026MPS 2433 integrated MOSFETs with a maximum current of 80 A per phase.

110A1Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Overview: 110A SPS (smart power stage).

VRM controlleriPWM controller chip with maker, e.g. MPS MP2857. One name: the maker's when published, otherwise the one name a review uses. No parentheses. Other names go in the source note. Use the part number without the date code in the chip marking.

MPS MPS24123Reviewkitguru.net/components/motherboard/leo-waldock/msi-mag-b850-tomahawk-max-wifi-reviewRead 14 October 2026Controller is MPS2412 and the power stages are MPS2433.4Reviewtomshardware.com/pc-components/motherboards/msi-mag-b850-tomahawk-max-wifi-motherboard-reviewRead 14 October 2026Power goes to a Monolithic Power Systems MPS2412 controller.6Reviewprofesionalreview.com/2025/02/11/msi-mag-b850-tomahawk-max-wifi-reviewRead 14 October 2026The phases are controlled by an MPS2412 chip from the same maker.

Not available

CPU power connectorsiEPS 12 V connectors for the CPU as pin counts, e.g. 8+8 pin, 8+4 pin or 8 pin.

8+8 pin1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Page 19: 2x 8-pin +12V power connectors (CPU_PWR1 and CPU_PWR2).

8+8 pin1Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Internal I/O list: 8-pin ATX 12V power connector, quantity 2. The manual lists 1 x 8+8-pin ATX 12V.2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026Internal I/O: 1 x 8+8-pin ATX 12V power connector.

Extra slot power connectoriA PCIe or other power connector on the board that feeds the expansion slots. The 24-pin and CPU connectors do not count. A connector the maker ties only to a front USB-C header does not count.

Yes1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Page 19 and page 41: 1x 8-pin PCIe power connector (PCIE_PWR1). The special features list also names it.

No2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026The internal I/O list has the 24-pin ATX connector and the 8+8-pin 12V connector as its only power connectors. It has no extra slot power connector.

Memory

4 of 6 differ

Memory type

DDR51Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026

DDR51Maker product pagenzxt.com/product/n9-x870eRead 15 October 20262Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026

Memory slotsiDIMM slots on the board.

41Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026

41Maker product pagenzxt.com/product/n9-x870eRead 15 October 20262Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026

Max memoryiMaximum total capacity the maker states for the board. The maker's product page wins over an older manual, since a BIOS update can raise the value.

256GB1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026

192GB1Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026FAQ: dual-channel up to 192 GB, same as the manual and the support spec page. PC Unboxing and PC Gamer print 256 GB. The maker value is stored.2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026Specifications, memory: 4 x DIMM slots, max. 192 GB, dual-channel DDR5.

Max memory speed (overclocked)iHighest overclocked speed the maker lists for one module per channel, with the newest CPU family the board is sold for, e.g. Ryzen 9000 or Core Ultra 200S. Ryzen 8000 values are never used. The source note names the family and the other module setups. It is not the CPU's official speed. A JEDEC-only list such as 5600/4800 is not this value. When the maker lists a manual overclock and a memory profile speed, the higher one is stored. The maker's product page wins over an older manual, since a BIOS update can raise the value. A table that names the CPU family wins over a headline speed that names none.

8,400MT/s2Retailer pageshop.sumanet.cz/mag-b850-tomahawk-max-wifi-msi-mb-sc-am5-mag-b850-tomahawk-max-wifi-amd-b850-4xddr5-1xhdmi-wifi-atxRead 14 October 2026MSI text copied by the shop: Ryzen 9000 Series maximum overclocking frequency 1DPC 1R up to 8400+ MT/s. 1DPC 2R and 2DPC 1R reach 6400+ and 2DPC 2R reaches 4800+.4Reviewtomshardware.com/pc-components/motherboards/msi-mag-b850-tomahawk-max-wifi-motherboard-reviewRead 14 October 2026DDR5-8400 (OC), 1DPC 1R max speed up to 8400+ MT/s, as listed from MSI. The reviewer's stable out-of-box kit was DDR5-7200.

8,200MT/s4Reviewpcunboxing.com/enRead 15 October 2026Spec list: 8200 (O.C.) MT/s. Text: QVL-listed dual-channel modules reach 8200 MT/s with Ryzen 9000 series CPUs. NZXT's page says 8000+ MT/s and points to the memory QVL, which is on support.nzxt.com and was not readable. PC Gamer prints DDR5-4800 to DDR5-8200+ (OC).5Reviewpcgamer.com/hardware/motherboards/nzxt-n9-x870e-reviewRead 15 October 2026Spec box: Memory support DDR5-4800 to DDR5-8200+(OC), up to 256 GB. The review's VRM temperature is left out, since it used an Intel Core Ultra 9 285K rig and an unclear auxiliary sensor.

ECC memoryiThe board runs unbuffered ECC modules with ECC active. A board that runs ECC modules in non-ECC mode does not count. DDR5 on-die ECC does not count. A maker list of ECC and non-ECC unbuffered memory with no non-ECC mode qualifier counts as true, as on ASUS and ASRock AM5 boards. A note that ECC mode depends on the CPU, as ASUS writes for AM4 boards, still counts as true.

No1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Page 17: supports non-ECC, unbuffered memory.

Yes4Reviewpcunboxing.com/enRead 15 October 2026Text: the slots support ECC unbuffered DIMM and non-ECC unbuffered DIMM. NZXT's page and manual do not mention ECC.

CUDIMM supportiThe board runs clocked unbuffered DIMMs (CUDIMM) with the clock driver active. Clock driver bypass mode only does not count. A plain "Supports CUDIMM" with no bypass limit, as ASRock and ASUS write it, counts as true.

No1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Page 17: supports CUDIMM, clock driver bypass mode only. POR boot frequency and support vary by CPU series.

Not available

Expansion slots

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Expansion slotsiPhysical card slots. Storage M.2 slots are listed under Storage. The M.2 slot of a pre-installed Wi-Fi module is not listed. A full-length slot wired for x4 is PCIe x16 with 4 lanes.

AMSI MAG B850 TOMAHAWK MAX WIFI

Physical slot	Electrical lanes	PCIe generation	Connected to	Count
PCIe x16	16	5	CPU	1
PCIe x16	1	3	Chipset	1
PCIe x16	4	4	Chipset	1

Source1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Page 17: 3x PCIe x16 slots. PCI_E1 from the CPU runs PCIe 5.0 x16 on Ryzen 9000 and 7000, PCIe 4.0 x8 on Ryzen 8700, 8600 and 8400, PCIe 4.0 x4 on Ryzen 8500 and 8300. PCI_E2 is up to PCIe 3.0 x1 and PCI_E3 is up to PCIe 4.0 x4, both from the chipset. PCI_E3 runs at x2 when M2_3 is used. The pre-installed Wi-Fi module sits in an M.2 Key-E slot, which is not listed.

BNZXT N9 X870E

Physical slot	Electrical lanes	PCIe generation	Connected to	Count
PCIe x16	16	5	CPU	1
PCIe x16	2	3	Chipset	1

Source1Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Spec table: PCIe 5.0 x16 slot (PCIEX16_1) and PCIe 3.0 x16 slot (PCIEX16_2) in x2 mode. The manual puts the first on the CPU and the second on the chipset. The Key E M.2 socket for the Wi-Fi module is not stored.2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026Specifications, expansion slots: under CPU 1 x PCIe 5.0 x16 slot (PCIEX16_1) in x16 mode. Under chipset 1 x PCIe 3.0 x16 slot (PCIEX16_2) in x2 mode, and a vertical Key E M.2 socket for a 2230 Wi-Fi/BT module. Igor's Lab reads the second slot as PCIe 4.0 x4 from its block diagram. The maker value is stored.

Full-length PCIe slotsiCounts full-length slots, whatever their lane count.

3=CalculatedFrom Expansion slots

2=CalculatedFrom Expansion slots

Fastest PCIe x16 slot generationiHighest PCIe generation of a full-length slot. This is normally the graphics card slot.

5=CalculatedFrom Expansion slots

5=CalculatedFrom Expansion slots

Storage

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M.2 storage slotsiOne row per M key storage slot on the board, front or back. Slots on an included add-in card are not listed. Values are with the CPU family that gives the board its full connectivity. A slot listed for 25110 counts as M.2 22110. A slot listed for 2260 counts as M.2 2280.

AMSI MAG B850 TOMAHAWK MAX WIFI

Slot	PCIe generation	PCIe lanes	Connected to	Longest drive	Takes SATA drives	Heatsink	Shares lanes with
M2_1	5	4	CPU	M.2 22110	No	Yes	Not available
M2_2	5	4	CPU	M.2 2280	No	Yes	Not available
M2_3	4	2	Chipset	M.2 2280	No	Yes	PCI_E3 slot runs at x2 when M2_3 is used. Setting PCI_E3 to x4 in the BIOS turns off M2_3
M2_4	4	4	Chipset	M.2 2280	No	Yes	Not available

Source1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Page 18: M2_1 from the CPU, PCIe 5.0 x4 on Ryzen 9000 and 7000, 2280 and 22110. M2_2 from the CPU, PCIe 5.0 x4, 2260 and 2280. M2_3 from the chipset, PCIe 4.0 x2, 2260 and 2280. M2_4 from the chipset, PCIe 4.0 x4, 2260 and 2280. Ryzen 8000 CPUs slow M2_1 and M2_2 to PCIe 4.0 (M2_2 to x2 on Ryzen 8500 and 8300). Page 37 shows M.2 Shield Frozr heatsinks over M2_2 to M2_4, and page 34 the screwless one on M2_1. No slot lists an M.2 SATA mode, so sata is false.

BNZXT N9 X870E

Slot	PCIe generation	PCIe lanes	Connected to	Longest drive	Takes SATA drives	Heatsink
M2_1	5	4	CPU	M.2 2280	No	Yes
M2_2	4	4	Chipset	M.2 2280	No	Yes
M2_3	4	4	Chipset	M.2 2280	No	Yes
M2_4	4	4	Chipset	M.2 2280	No	Yes

Source1Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Spec table: M.2_1 type 2280 PCIe 5.0 x4, M.2_2 to M.2_4 type 2280 PCIe 4.0 x4. Overview: dedicated heatsinks and thermal pads for all M.2 slots. The spec lists no SATA mode for the slots, so sata is false. The slot labels follow the manual (M2_1 to M2_4).2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026Specifications, storage: M2_1 Key M type 2280 PCIe Gen5x4 on the CPU. M2_2 to M2_4 Key M type 2280 PCIe Gen4x4 under the chipset heading. No SATA mode is listed for any of the four slots.

M.2 slots

4=CalculatedFrom M.2 storage slots

4=CalculatedFrom M.2 storage slots

PCIe 5.0 M.2 slots

2=CalculatedFrom M.2 storage slots

1=CalculatedFrom M.2 storage slots

SATA portsiSATA 6Gb/s connectors on the board. SlimSAS connectors and M.2 slots that take SATA drives do not count.

41Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Page 17: 4x SATA 6Gb/s ports from an ASM1064 controller.

41Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Spec table: SATA 6Gb/s ports, 4.2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026Specifications, storage: 4 x SATA3 6.0 Gb/s connectors.

Rear ports

5 of 5 differ

Rear portsiPhysical connectors on the rear I/O panel. Wi-Fi antenna connectors and buttons are not ports. 3.5 mm audio counts analog jacks of any role. A video input, such as the DisplayPort In of a Thunderbolt board, is Other.

AMSI MAG B850 TOMAHAWK MAX WIFI

Type	Version	Count	Max link rate (Gbps)
USB-C	USB 3.2 Gen 2	3	10
USB-A	USB 3.2 Gen 2	2	10
USB-A	USB 3.2 Gen 1	1	5
USB-A	USB 2.0	4	0.48
HDMI	HDMI 2.1	1	Not available
Ethernet (RJ45)	Not available	1	5
3.5 mm audio	Not available	2	Not available
Optical S/PDIF	Not available	1	Not available

Source1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Page 20 and page 23: 3 USB 10Gbps Type-C (CPU), 2 USB 10Gbps Type-A (one CPU, one chipset), 1 USB 5Gbps Type-A, 4 USB 2.0 (from a hub), 1 HDMI (2.1 with FRL, graphics only on CPUs with integrated graphics), 1 5G LAN (RJ45), line-out and mic-in jacks, 1 optical S/PDIF out. USB 2.0 is stored as 0.48 Gbps. Flash BIOS and Clear CMOS buttons and the two Wi-Fi antenna connectors are not ports.

BNZXT N9 X870E

Type	Version	Count	Max link rate (Gbps)	Thunderbolt or USB4	Power out (W)	DP Alt Mode
USB-C	USB4	2	40	USB4	15	Yes
USB-A	USB 3.2 Gen 2	5	10	Not available	Not available	Not available
USB-A	USB 3.2 Gen 1	3	5	Not available	Not available	Not available
USB-A	USB 2.0	2	0.48	Not available	Not available	Not available
Ethernet (RJ45)	Not available	1	5	Not available	Not available	Not available
3.5 mm audio	Not available	2	Not available	Not available	Not available	Not available
Optical S/PDIF	Not available	1	Not available	Not available	Not available	Not available

Source1Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Spec table rear I/O: 2 USB 4, 5 USB 3.2 Gen 2, 3 USB 3.2 Gen 1 Type-A, 2 USB 2.0, 1 RJ45, 2 audio jacks, 1 optical S/PDIF out. The 5 USB 3.2 Gen 2 ports are Type-A because the rear panel shows eight Type-A ports and two Type-C. USB 2.0 is stored as 0.48 Gbps. The manual gives USB PD 3.0 up to 5 V at 3 A (15 W) on the USB4 ports and 5 GbE LAN. Wi-Fi antenna connectors and the two buttons are not ports.2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026Specifications, rear I/O: 2 x SMA antenna connectors, 2 x USB4 Type-C (40 Gb/s, USB PD 3.0 up to 5V@3A, 15 W), 5 x USB 3.2 Gen2, 3 x USB 3.2 Gen1, 2 x USB 2.0, Clear CMOS button, BIOS Flashback button, 1 x RJ45, line out, mic in, optical S/PDIF out. The graphics note says the USB4 ports show only the CPU's embedded graphics, up to 8K 30 Hz, which is why dp_alt_mode is true.

Rear USB ports

10=CalculatedFrom Rear ports

12=CalculatedFrom Rear ports

Rear USB-C portsiIncludes Thunderbolt and USB4 ports.

3=CalculatedFrom Rear ports

2=CalculatedFrom Rear ports

Fastest rear USB port

10Gbps=CalculatedFrom Rear ports

40Gbps=CalculatedFrom Rear ports

ThunderboltiThunderbolt on the rear panel. A header for an add-in card does not count.

Not available

No=CalculatedFrom Rear ports

Internal connectors

3 of 5 differ

Internal USB headersiHeaders for front-panel USB ports. The header count may be left out when the maker states only the front ports served.

AMSI MAG B850 TOMAHAWK MAX WIFI

Header	Max data rate (Gbps)	Headers	Front ports served
USB-C header	20	1	1
USB 3 header (19-pin)	5	2	4
USB 2.0 header (9-pin)	0.48	2	4

Source1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Page 19, 43 and 44: 1 USB 20Gbps Type-C front panel header (JUSBC1), 2 USB 5Gbps headers (JUSB2 and JUSB3) that serve 4 more ports, 2 USB 2.0 headers (JUSB4 and JUSB5) that serve 4 more ports.

BNZXT N9 X870E

Header	Max data rate (Gbps)	Headers	Front ports served
USB-C header	20	1	1
USB 3 header (19-pin)	5	2	4
USB 2.0 header (9-pin)	0.48	2	4

Source1Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Spec table: two USB 2.0 headers (up to 4 ports), two USB 3.2 Gen1 headers (up to 4 ports), one USB 3.2 Gen2x2 front panel header for USB Type-C. The manual's older text says USB 3.2 Gen 2 for the Type-C header. PC Unboxing and Igor's Lab both say 20 Gbps.2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026Specifications, internal I/O: 2 x USB 2.0 header (up to 4 ports), 2 x USB 3.2 Gen 1 header (up to 4 ports), 1 x USB 3.2 Gen 2 front panel header (for USB Type-C). The Type-C header speed is stored as 20 Gbps, see the manufacturer page note.

Front USB-C header speed

20Gbps=CalculatedFrom Internal USB headers

20Gbps=CalculatedFrom Internal USB headers

Fan headersiAll fan and pump headers on the board, including CPU, CPU optional, AIO pump and chassis fan headers. Combination connectors that carry fan power together with other lines, such as MSI EZ Conn, do not count. A header that drives several fans, such as GIGABYTE 3_FANS, counts once. Headers on a hub that ships with the board and plugs into it, such as MSI's EZ CONTROL HUB, count. The source note splits board and hub.

81Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Page 19 and page 46: CPU_FAN1, PUMP_SYS1 and SYS_FAN1 to SYS_FAN6 make 8 headers. The EZ Conn-Header V2 (JAF_2) is a combination connector and is not counted.

51Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Internal I/O: 1 CPU_FAN, 1 AIO_PUMP and 3 SYS_FAN, all 4-pin. The two NZXT 8-pin PWM connectors carry fan power with RGB lines and are not counted.2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026Specifications, internal I/O: 1 x CPU_FAN, 1 x AIO_PUMP and 3 x SYS_FAN, all 4-pin. The 2 x NZXT 8-pin PWM connectors are combination connectors and are not counted.

ARGB headersi3-pin 5 V addressable RGB headers. Combination connectors do not count. Headers on a hub that ships with the board and plugs into it, such as MSI's EZ CONTROL HUB, count. The source note splits board and hub.

31Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Page 19: 3x 3-pin A-RAINBOW V2 (ARGB Gen2) connectors.

21Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Internal I/O: 2 x 5V ARGB LED connectors.2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026Specifications, internal I/O: 2 x 5V addressable RGB LED connectors.

RGB headersi4-pin 12 V RGB headers. Headers on a hub that ships with the board and plugs into it, such as MSI's EZ CONTROL HUB, count. The source note splits board and hub.

11Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Page 19: 1x 4-pin RGB LED connector (JRGB1).

01Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Internal I/O has one NZXT RGB LED connector, which the manual calls a 5 V 4-pin LED header. There is no 12 V RGB header.2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026The NZXT RGB LED connector is a 5 V 4-pin LED header (up to 5V/3A, 15 W) and is not a 12 V RGB header. The internal connector list has no other RGB header.

Networking

2 of 9 differ

Ethernet controllersiOne item per Ethernet chip, as maker plus chip family without suffix letters, e.g. Realtek RTL8126 or Realtek RTL8125. Suffixes and revisions go in the source note. Leave it empty when no maker document or review names the chip. A Killer chip is written with Intel as its maker, such as Intel Killer E3100G.

Realtek RTL81266Reviewprofesionalreview.com/2025/02/11/msi-mag-b850-tomahawk-max-wifi-reviewRead 14 October 2026Realtek RTL8126VB with 5 Gbps on the RJ-45 port, stored as the chip family RTL8126.7Reviewhwcooling.net/en/si-mag-b850-tomahawk-max-wifi-cheaper-chipset-but-better-features-reviewRead 14 October 2026Realtek 8126VB, 5 GbE.

Realtek RTL81262Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026Specifications, LAN: 5 Gigabit LAN, Realtek RTL8126CG. Stored as the chip family without the suffix. Guru3D and Igor's Lab also read RTL8126-CG.3Reviewigorslab.de/en/nzxt-n9-x870e-am5-motherboard-review-solid-optical-minimalism-at-a-proud-price-with-teardown-and-material-testRead 15 October 2026Teardown: Realtek RTL8126, connected to the first chipset over PCIe Gen3.

Ethernet ports

1=CalculatedFrom Rear ports

1=CalculatedFrom Rear ports

Ethernet speediFastest Ethernet port.

5Gbps=CalculatedFrom Rear ports

5Gbps=CalculatedFrom Rear ports

Wi-Fi includediA Wi-Fi module comes installed. A board sold with and without Wi-Fi is two products.

Yes1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026

Yes1Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Spec table: Tri-Band Wi-Fi 7, with an M.2 Key E socket for a 2230 Wi-Fi/BT PCIe module and two SMA antenna connectors.2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026Specifications, wireless: 802.11be 2x2 Wi-Fi 7 module, 802.11a/b/g/n/ac/ax/axe/be.

Wi-Fi standard

Wi-Fi 71Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026

Wi-Fi 71Maker product pagenzxt.com/product/n9-x870eRead 15 October 20262Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026

Wi-Fi bandsiBands the installed module supports.

2.4 GHz, 5 GHz, 6 GHz1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026

2.4 GHz, 5 GHz, 6 GHz1Maker product pagenzxt.com/product/n9-x870eRead 15 October 20262Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026Specifications, wireless: 2.4 GHz, 5 GHz and 6 GHz bands.

Max Wi-Fi channel widthiWidest channel the installed module supports, e.g. 320 or 160. It follows the Wi-Fi module, so a board revision can change it.

320MHz1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Page 19: Supports 2.4GHz, 5GHz and 6GHz (320MHz) up to 5.8Gbps, 802.11 a/b/g/n/ac/ax/be.

160MHz2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026Specifications, wireless: 160 MHz channel bandwidth with the 6 GHz band.

Wi-Fi moduleiChip as published. A board revision can change the chip. One name: the maker's when published, otherwise the one name a review uses. No parentheses. Other names go in the source note. Use the chip's part number with its maker when any source gives it, such as Qualcomm QCNCM865 for a module also written NCM865. A platform name such as FastConnect 7800 is used only when no part number is published.

Qualcomm QCNCM8656Reviewprofesionalreview.com/2025/02/11/msi-mag-b850-tomahawk-max-wifi-reviewRead 14 October 2026Qualcomm FastConnect 7800 Wi-Fi 7 card with 320 MHz channels, 4KQAM and Bluetooth 5.4. HWCooling names the module Qualcomm NCM865, which is the part number QCNCM865, so that is stored.7Reviewhwcooling.net/en/si-mag-b850-tomahawk-max-wifi-cheaper-chipset-but-better-features-reviewRead 14 October 2026Qualcomm NCM865 wireless module, Wi-Fi 7 with Bluetooth 5.4. Published 2025-02-27.

Not available

BluetoothiVersion of the Bluetooth radio on the Wi-Fi module.

5.41Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Page 19: Bluetooth 5.4, MLO, 4KQAM. The manual says the version may be updated by the Wi-Fi chip vendor.

5.41Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Spec table: Bluetooth v5.4.2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026

Audio

1 of 2 differ

Audio codeciMaker and model, e.g. Realtek ALC4080. A board revision can change the codec.

Realtek ALC40801Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Page 18: Realtek ALC4080 codec, 7.1-channel USB audio.

Realtek ALC40821Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Spec table: Realtek ALC4082 audio codec. PC Gamer and CGMagazine write ALC4080.2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026Specifications, audio: 7.1 CH HD Audio with Content Protection (Realtek ALC4082 audio codec).

DAC chipiA separate DAC chip next to the codec, e.g. ESS ES9219. Maker plus part number as the maker writes it, with suffix letters, e.g. ESS ES9219Q. A marketing name that stands for a part number is written as the part number, so ESS SABRE9219 is ESS ES9219 and the maker wording goes in the source note. Leave it empty on boards with only a codec.

Not available

Not available

Features

4 of 7 differ

BIOS flashbackiA button that updates the BIOS from a USB drive without a CPU or memory installed. Maker names include BIOS FlashBack, Flash BIOS Button and Q-Flash Plus.

Yes1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Page 20 and page 23: Flash BIOS button on the rear panel.

Yes2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026Specifications, rear I/O: 1 x BIOS Flashback button. The rear panel photo on NZXT's store page shows the button next to Clear CMOS.3Reviewigorslab.de/en/nzxt-n9-x870e-am5-motherboard-review-solid-optical-minimalism-at-a-proud-price-with-teardown-and-material-testRead 15 October 2026Teardown names a Flash Back chip next to the BIOS flash.

Clear CMOS button (rear)iA button on the rear panel that resets the BIOS settings. A jumper or header does not count. A board whose only clear CMOS button sits on the board itself is false.

Yes1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Page 20 and page 23: Clear CMOS button on the rear panel.

Yes1Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Rear I/O: Clear CMOS button, quantity 1.2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026

POST code displayiA two-digit display that shows boot codes, e.g. ASUS Q-Code or ASRock Dr. Debug. Single status LEDs do not count. Taken from the maker's spec or manual only. A review spec table is not enough.

No1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Page 19 and page 51: 4x EZ Debug LED (CPU, DRAM, GPU, boot) and one memory detection LED. No two-digit display is listed.

Yes1Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Internal I/O: Digital Debug LED, plus 4 POST LEDs. Igor's Lab calls it a 2-digit debug display. The manual's connector legend says status codes used for troubleshooting.2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026Specifications, internal I/O: 1 x Digital Debug LED and 4 x POST LEDs. The connector legend names the Digital Debug LED as status codes used for troubleshooting.3Reviewigorslab.de/en/nzxt-n9-x870e-am5-motherboard-review-solid-optical-minimalism-at-a-proud-price-with-teardown-and-material-testRead 15 October 2026Page 1: a 2-digit debug LED display and four POST LEDs for CPU, DRAM, VGA and boot.

Power button on the boardiA power or start button on the board itself, for use outside a case. A button with another label counts when the maker says it can turn the PC on, such as GIGABYTE's quick button labelled RESET. A button on the rear I/O panel counts. A button on a module that ships fitted to the board, such as MSI's EZ BRIDGE, counts.

No1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026The specifications chapter and the onboard LEDs page list no power or reset button on the board. Its only buttons are the two on the rear panel.

Yes1Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Internal I/O: Power button and Reset button on the board.2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026Specifications, internal I/O: 1 x Power button and 1 x Reset button.3Reviewigorslab.de/en/nzxt-n9-x870e-am5-motherboard-review-solid-optical-minimalism-at-a-proud-price-with-teardown-and-material-testRead 15 October 2026Page 1: power and reset buttons directly on the PCB.

Dual BIOSiTwo BIOS chips, so the board can start from the second chip after a failed update. Two flash chips alone do not count.

No1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Page 20: BIOS is 1x 256 Mb flash. Dual BIOS is not stated.

Not available

Pre-installed I/O shieldiThe rear I/O shield is fixed to the board.

Yes1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Page 21 special features list: Pre-installed I/O Shield.9Reviewtech4gamers.com/msi-mag-b850-tomahawk-max-wifi-reviewRead 14 October 2026The I/O shield is pre-installed on the motherboard, in stainless steel.

Yes3Reviewigorslab.de/en/nzxt-n9-x870e-am5-motherboard-review-solid-optical-minimalism-at-a-proud-price-with-teardown-and-material-testRead 15 October 2026Page 1 box contents: no I/O shield is included, since it is permanently integrated.

Tool-free featuresiM.2 latch holds a drive without a screw. M.2 heatsink comes off without a tool. PCIe slot release is a button or lever that frees the graphics card. Push-on antenna connector fits the Wi-Fi antenna without screwing.

Tool-free M.2 latch, Tool-free M.2 heatsink, PCIe slot release1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Page 21 EZ DIY list: EZ M.2 Shield Frozr II (screwless, on M2_1 only per page 34 and HWCooling), EZ M.2 Clip II and EZ PCIe Release. The Wi-Fi antenna uses the normal threaded connectors per Profesional Review, so the push-on antenna option is not set.7Reviewhwcooling.net/en/si-mag-b850-tomahawk-max-wifi-cheaper-chipset-but-better-features-reviewRead 14 October 2026Tool-free cooler on the first M.2 slot with a release button. The other two SSD coolers use screws. A remote button releases the PCIe slot latch.

Tool-free M.2 latch1Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Overview: four M.2 slots, all with quick-release latches. The Wi-Fi antennas use SMA screw connectors, so the board has no push-on antenna connector.

Measured

3 of 3 differ

VRM temperature under CPU loadiHighest VRM temperature a reviewer measured during a sustained all-core CPU stress test at stock settings. Compare only results from the same reviewer and CPU. The reviewer's probe reading when given, otherwise the board sensor. The sensor and the CPU package power during the test go in the source note.

44°C5Measurementtomshardware.com/pc-components/motherboards/msi-mag-b850-tomahawk-max-wifi-motherboard-review/3Read 14 October 2026Ryzen 9 9900X (CPU averages about 150 W), stock settings, AIDA64 System Stability Test. Peak 44 C on the reviewer's probes and 46 C from the board's integrated sensor. The ambient temperature is not stated.

Not available

Power draw idleiWhole test system at the wall at idle, measured by a reviewer. Compare only results from the same reviewer and CPU. A chart of CPU and board power without a wall meter does not count.

74W5Measurementtomshardware.com/pc-components/motherboards/msi-mag-b850-tomahawk-max-wifi-motherboard-review/3Read 14 October 2026Whole test system at the wall with a Kill-A-Watt meter, Windows Balanced power plan, EXPO enabled. Test system: Ryzen 9 9900X, RTX 4080, Crucial T705, Windows 11. The first page says AGESA 1.2.0.3a BIOS.

Not available

Power draw CPU stressiWhole test system at the wall at the peak of a CPU stress test, measured by a reviewer. The graphics card is not loaded. Compare only results from the same reviewer and CPU. A chart of CPU and board power without a wall meter does not count.

250W5Measurementtomshardware.com/pc-components/motherboards/msi-mag-b850-tomahawk-max-wifi-motherboard-review/3Read 14 October 2026Peak of the whole test system at the wall (Kill-A-Watt) during the AIDA64 System Stability Test with CPU, FPU, cache and memory stress. The graphics card was not stressed.

Not available

In the box

1 of 1 differ

In the boxiItems as the maker lists them.

1 x Quick installation guide, 1 x European Union Regulatory Notices, 1 x SATA cable, 1 x 1 to 3 EZ Conn-Cable (V2), 1 x EZ Front panel cable, 1 x EZ Wi-Fi Antenna, 1 x Cable sticker, 3 x EZ M.2 Clip II, 1 x EZ M.2 Clip II Remover1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026Page 22 package contents.

4 x SATA cables (2 x 90°, 2 x 180°), 2 x wireless antennas, 2 x NZXT 8-pin splitter cables, User manual1Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Page: SATA cables (2 x 90°, 2 x 180°) x4, wireless antenna x2, NZXT 8-pin splitter, user manual. The manual and Igor's Lab give two splitter cables.2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026Package contents: motherboard, SATA cables (2 x 90°, 2 x 180°), wireless antenna x2, NZXT 8-pin splitter x2.

Links

Not compared

Product page

www.msi.com/Motherboard/MAG-B850-TOMAHAWK-MAX-WIFI10Maker product pagemsi.com/Motherboard/MAG-B850-TOMAHAWK-MAX-WIFIRead 14 October 2026The link appears as the manufacturer page on hinta.fi and in web search results. msi.com blocks agents, so the page was not read and its content is not used for any value.

nzxt.com/product/n9-x870e1Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026

Spec sheet

Not available

Not available

Manual

gzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdf1Owner's manualgzhls.at/blob/ldb/4/c/d/0/9505de78491f9bbd3d2c02edb15c90ef238e.pdfRead 14 October 2026MSI MAG B850 TOMAHAWK MAX WIFI User Guide, 68 pages, PDF created 2025-03-24, hosted by Geizhals. The cover names this exact model, not the II model.

cdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdf2Owner's manualcdn-g.nzxt.com/dl/1743412363-motherboards_n9-x870e_digital-manual_241210_v1.pdfRead 15 October 2026NZXT digital manual, file dated 2024-12-10 (v1), multi-language, 3 pages. It is linked from the N9 X870E downloads page on support.nzxt.com, which blocks agents.

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.

Not available

Not available

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.

3years4Reviewtomshardware.com/pc-components/motherboards/msi-mag-b850-tomahawk-max-wifi-motherboard-reviewRead 14 October 2026US: spec table lists Warranty 3 Years. Tech4Gamers also says MSI offers a 3-year warranty. Scan UK lists 24 months.

3years1Maker product pagenzxt.com/product/n9-x870eRead 15 October 2026Spec table: Warranty 3 years, US store page.

Both are also in the API. Back to all motherboards.