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ASUS ROG Crosshair X870E Hero vs ASUS ROG STRIX B850-A GAMING WIFI

A

Product A: ASUS

ROG Crosshair X870E Hero

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B

Product B: ASUS

ROG STRIX B850-A GAMING WIFI

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Only differences

AASUS ROG Crosshair X870E Hero

BASUS ROG STRIX B850-A GAMING WIFI

General

3 of 9 differ

Series

ROG Crosshair2Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-heroRead 15 October 2026The product page sits in the ROG Crosshair line.

ROG Strix2Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifiRead 14 October 2026ROG Strix is the ASUS line in the product name. The page sits in the ROG Strix motherboard family.

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

ROG CROSSHAIR X870E HERO, 90MB1IE0-M0EAY011Retailer pageshop.sumanet.cz/90mb1ie0-m0eay0-asus-mb-sc-am5-rog-crosshair-x870e-hero-amd-x870-4xddr5-1xhdmi-2xthunderbolt-wifiRead 15 October 2026Type designation 90MB1IE0-M0EAY0.

ROG STRIX B850-A GAMING WIFI, 90MB1J50-M0AAY0, 90MB1J50-M0EAY01Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026The page's order configuration id is 90MB1J50-M0AAY0. Paradigit lists 90MB1J50-M0EAY0 for the same board.11Retailer pageparadigit.ie/asus-rog-strix-b850-a-gaming-wifi/21754542/productRead 14 October 2026Paradigit lists product number manufacturer 90MB1J50-M0EAY0 for the board.

GTIN / EAN

471138771030210Retailer pagearvutitark.ee/en/pc-components/motherboards/asus-rog-crosshair-x870e-hero-amd-x870e-socket-am5-atx-1402616Read 15 October 2026The listing gives EAN 4711387710302 for the manufacturer code 90MB1IE0-M0EAY0.11Retailer pageshop.sumanet.cz/90mb1ie0-m0eay0-asus-mb-sc-am5-rog-crosshair-x870e-hero-amd-x870-4xddr5-1xhdmi-2xthunderbolt-wifiRead 15 October 2026The listing gives GTIN (EAN) 4711387710302.

197105772670, 47113877726768Retailer pageamazon.com/dp/B0DPLP33YRRead 14 October 2026The Amazon US listing for ASIN B0DPLP33YR gives UPC 197105772670 and Mfr Part Number ROG STRIX B850-A GAMING WIFI.9Retailer pagescan.co.uk/products/asus-rog-strix-b850-a-gaming-wifiRead 14 October 2026Scan UK lists GTIN 4711387772676.10Spec databasebuildcores.com/products/Motherboard/xy81tonxw/ASUS-ROG-STRIX-B850-A-GAMING-WIFIRead 14 October 2026BuildCores lists UPC 197105772670 and 197105983472 and EAN 4711387772676. 197105983472 is not stored, since no page ties it to this model.

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

Not available

6 January 20254Press releasepress.asus.com/news/press-releases/asus-amd-x870e-b850-b840-rog-strix-tuf-prime-motherboardsRead 14 October 2026ASUS press release of 2025-01-06 introduces the ROG Strix B850-A Gaming WiFi.

Status

Available13Spec databasemaxmybuild.com/motherboards/asus-rog-crosshair-x870e-heroRead 15 October 2026Newegg and Amazon list the board in stock on 2026-10-14.

Available8Retailer pageamazon.com/dp/B0DPLP33YRRead 14 October 2026The listing is in stock on 2026-10-14 at best sellers rank 3 in Computer Motherboards.10Spec databasebuildcores.com/products/Motherboard/xy81tonxw/ASUS-ROG-STRIX-B850-A-GAMING-WIFIRead 14 October 2026BuildCores shows US retailers in stock on 2026-10-14 (Amazon, Best Buy, Newegg, Walmart).

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.

$699.996Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026The review says the Hero is priced at the same MSRP as the X670E Hero, $699.99. US price from a reviewer, not a statement by ASUS. Tax is not included.

Not available

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

Not available

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.

Gaming1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026The page sits under ROG gaming motherboards (page title: ROG Crosshair, Gaming Motherboards).2Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-heroRead 15 October 2026The product sits in the ROG Crosshair line of ROG gaming motherboards.

Gaming2Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifiRead 14 October 2026The page sits under ROG gaming motherboards (breadcrumb Gaming Motherboards).

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.

AM51Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026CPU row: AMD Socket AM5.

AM51Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 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 X870E1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Chipset row: AMD X870E.

AMD B8501Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 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 Series1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026CPU row: AMD Ryzen 9000 & 8000 & 7000 Series Desktop Processors. The page refers to the ASUS download center for the CPU support list. Read on 2026-10-15.

AMD Ryzen 9000 Series, AMD Ryzen 8000 Series, AMD Ryzen 7000 Series1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026AM5 for Ryzen 9000, 8000 and 7000 Series. The page refers to the ASUS download center for the CPU support list. Read on 2026-10-14.

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

Yes12Maker product pageamd.com/en/products/processors/chipsets/am5.htmlRead 15 October 2026AMD's chipset comparison lists Ryzen processor overclocking enabled: Yes for the X870E. This is the chip maker's page and not the board maker's.

Yes7Maker product pageamd.com/en/products/processors/chipsets/am5.htmlRead 14 October 2026AMD describes the B850 platform with enhanced overclocking capabilities, and its chipset table lists CPU overclocking as Yes for B850. This is the chip maker's page and not the board maker's. ASUS also describes PBO enhancement and overclocking headroom for this board.

Board

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

ATX1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Form Factor row: ATX Form Factor.

ATX1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026ATX form factor.

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)3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_CROSSHAIR_X870E_HERO/E27104_ROG_CROSSHAIR_X870E_HERO_EM_V5_WEB.pdfRead 15 October 2026Specifications summary, Form Factor: ATX Form Factor, 12 inch x 9.6 inch (30.5 cm x 24.4 cm). Stored as 244 mm wide and 305 mm high.8Reviewkitguru.net/components/motherboard/leo-waldock/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec list: ATX 305mm x 244mm.

Width244Height305mm(9.6 × 12 in)1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 202612 inch x 9.6 inch (30.5 cm x 24.4 cm).

PCB layersiCopper layers in the circuit board as published.

85Maker product pagerog.asus.com/tw/motherboards/rog-crosshair/rog-crosshair-x870e-hero/awardRead 15 October 2026The awards page, in a quoted award text, says the ASUS ROG CROSSHAIR X870E HERO features an 8-layer 2oz Copper PCB. The same text is on the Swiss German, Philippine and Hong Kong pages. The spec page and overview do not state the layer count.

82Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifiRead 14 October 2026Overview page: eight-layer PCB. The page also describes a white 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.

No1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026The internal connector list shows the usual front-side headers. The BTF version is a separate model and is not this board.

No3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_STRIX_B850-A_GAMING_WIFI/E26438_ROG_STRIX_B850-A_GAMING_WIFI_EM_v3_WEB.pdfRead 14 October 2026The layout in chapter 1 shows the usual front-side power, fan and USB connectors. The board is not a back-connect design.10Spec databasebuildcores.com/products/Motherboard/xy81tonxw/ASUS-ROG-STRIX-B850-A-GAMING-WIFIRead 14 October 2026Back-Connect Connectors: No.

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.

Yes2Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-heroRead 15 October 2026Overview: the board features the Polymo Lighting II effect on the I/O zone, with ROG lettering lit by LEDs on the rear I/O cover.

Yes2Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifiRead 14 October 2026The page describes subtle RGB lighting on the I/O shroud and ASUS Aura lighting.6Reviewchip.pl/2025/11/asus-rog-strix-b850-a-gaming-wifi-test-recenzja-opiniaRead 14 October 2026The review describes a lit ROG logo on the I/O shroud.

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.

18+2+22Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-heroRead 15 October 2026Overview: ROG Ultimate Power Solution 18(110A)+2(110A)+2(80A) Power Stages, and 18+2+2 power stages.6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec table: 22 Phase (18x 110A SPS MOSFETs for Vcore).8Reviewkitguru.net/components/motherboard/leo-waldock/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec list: 18+2 x110A +2x80A Vishay Smart Power Stages with Asus Digi+ ASP2205 controller.9Reviewguru3d.com/review/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Product showcase page: an 18+2+2 phase VRM configuration with 110A power stages.

14+2+22Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifiRead 14 October 202614(80A)+2(80A)+2(80A) power stages: 14 Vcore, 2 SoC and 2 MISC.

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.

182Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-heroRead 15 October 2026Overview: 18+2+2 power stages, with 18 on VCORE rated 110A, 2 on SoC and 2 on MISC.8Reviewkitguru.net/components/motherboard/leo-waldock/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec list: 18 Vcore stages at 110A.13Spec databasemaxmybuild.com/motherboards/asus-rog-crosshair-x870e-heroRead 15 October 2026Phase config 2x9+2+2, which is 18 stages on the Vcore rail.

142Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifiRead 14 October 2026The VRM features 14+2+2 power stages.

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.

110A2Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-heroRead 15 October 2026Overview: VCORE (110A). The SoC stages are 110 A and the MISC stages 80 A. Each power stage has a choke rated 45 A.8Reviewkitguru.net/components/motherboard/leo-waldock/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec list: 110A stages. This agrees with the maker.

80A2Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifiRead 14 October 2026Each of the 14 Vcore stages is rated 80 A. The SoC and MISC stages are also 80 A. One product image alt text on the page says 110 amps and the body text says 80 A. The 80 A figure is stored.

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.

ASUS ASP22056Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Power delivery has 22 phases, 18 of them Vcore. Power moves from the EPS connector to a Digi+ ASP2205 PWM controller, then to 18 Vishay SiC850A 110A power stages. KitGuru also names the ASP2205. ASUS is the maker of the Digi+ controllers.8Reviewkitguru.net/components/motherboard/leo-waldock/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec list: Asus Digi+ ASP2205 controller.

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 pin1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Power Related row: 2 x 8-pin +12V CPU Power connectors.2Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-heroRead 15 October 2026Overview: 8 + 8-pin ProCool II power connectors for the EPS 12V lines.

8+8 pin1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026Power related connectors: 1 x 24-pin main power and 2 x 8-pin +12V CPU power.

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.

No1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Power Related row lists 1 x 8-pin PCIe Power connector. The page ties it to the front USB 20Gbps Type-C port: to support 60W the power cable must go to this connector, or only 27W is supported. It is not described as feeding the expansion slots, so it does not count.3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_CROSSHAIR_X870E_HERO/E27104_ROG_CROSSHAIR_X870E_HERO_EM_V5_WEB.pdfRead 15 October 2026Layout item 25 is the 8-pin PCIe Power Plug LED for PCIE_8PIN_PWR. The manual says nothing about slot power from it.

No1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026The power related connector list has no extra slot power connector. The page never states that one is absent.

Memory

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Memory type

DDR51Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Memory row: 4 x DIMM slots, DDR5.

DDR51Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026

Memory slotsiDIMM slots on the board.

41Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Memory row: 4 x DIMM slots.

41Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 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.

256GB1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Memory row: max. 256GB. Tom's Hardware and KitGuru list 192GB from the launch specification.

256GB1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026The page says max. 256GB. Tech-Critter's January 2025 hands-on text says 192GB. The page and the June 2025 manual say 256 GB and are stored.

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.

8,200MT/s1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Memory row: up to 8200+MT/s (OC) with Ryzen 9000 Series Processors, 8600+ with Ryzen 8000 and 8000+ with Ryzen 7000. The Ryzen 9000 value is stored. The 8600 value is for Ryzen 8000 APUs. The page gives no table for other module setups.

8,000MT/s1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026Up to 8000+ MT/s (OC) with Ryzen 9000, 8000 and 7000 Series. The Ryzen 9000 value is stored. The overview page image text also shows 8400+.

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.

Yes1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Memory row: ECC and Non-ECC, Un-buffered Memory. The note says non-ECC DDR5 supports On-Die ECC, which does not count. The manual says ECC or non-ECC DDR5 DIMMs can be installed. The page does not say that ECC runs with ECC active.3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_CROSSHAIR_X870E_HERO/E27104_ROG_CROSSHAIR_X870E_HERO_EM_V5_WEB.pdfRead 15 October 2026Memory configurations: You may install ECC or Non-ECC DDR5 DIMMs into the DIMM sockets.

Yes1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026The page says ECC and Non-ECC, Un-buffered DIMM. The footnote says non-ECC DDR5 supports on-die ECC. The maker does not say how ECC works with each CPU.

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.

Not available

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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.

AASUS ROG Crosshair X870E Hero

Physical slot	Electrical lanes	PCIe generation	Connected to	Count
PCIe x16	16	5	CPU	1
PCIe x16	8	5	CPU	1

Source1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Expansion Slots row for Ryzen 9000 and 7000: 2 x PCIe 5.0 x16 slots with Q-Release Slim (supports x16 or x8/x8 or x8/x4/x4 modes). With both slots in use each runs at x8. Tom's Hardware says both slots connect to the CPU, the top one at x16 or x8 and the bottom one at x8. Ryzen 8000 limits the slots to PCIe 4.0 and turns the second slot off.6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Both reinforced PCIe slots are CPU-connected at PCIe 5.0. The top slot runs at x16 or x8 and the bottom slot runs at x8, or x4/x4 with some M.2 setups.

BASUS ROG STRIX B850-A GAMING WIFI

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

Source1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026Ryzen 9000 and 7000: 1 x PCIe 5.0 x16 slot. Ryzen 8000: the same slot runs PCIe 4.0 at x8 or x4. B850 chipset: 1 x PCIe 4.0 x16 slot at x4, which shares bandwidth with M.2_3. Stored with Ryzen 9000.3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_STRIX_B850-A_GAMING_WIFI/E26438_ROG_STRIX_B850-A_GAMING_WIFI_EM_v3_WEB.pdfRead 14 October 2026The layout shows PCIEX16(G5) and PCIEX16(G4) as the only two expansion slots.

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

2=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.

AASUS ROG Crosshair X870E Hero

Slot	PCIe generation	PCIe lanes	Connected to	Longest drive	Takes SATA drives	Heatsink	Shares lanes with
M.2_1	5	4	CPU	M.2 2280	No	Yes	Not available
M.2_2	5	4	CPU	M.2 2280	No	Yes	PCIEX16_1 and PCIEX16_2. With M.2_2 in use and M.2_3 not, PCIEX16_1 runs at x8 and PCIEX16_2 is disabled
M.2_3	5	4	CPU	M.2 2280	No	Yes	PCIEX16_1 and PCIEX16_2. With M.2_3 in use and M.2_2 not, PCIEX16_1 runs at x8 and PCIEX16_2 runs at x4. With both in use, PCIEX16_1 runs at x8 and PCIEX16_2 is disabled
M.2_4	4	4	Chipset	M.2 2280	No	Yes	Not available
M.2_5	4	4	Chipset	M.2 2280	No	Yes	Not available

Source1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Storage row for Ryzen 9000 and 7000: M.2_1, M.2_2 and M.2_3 (CPU) support type 2242/2260/2280 at PCIe 5.0 x4. The AMD X870E chipset gives M.2_4 (2242/2260/2280) and M.2_5 (2280) at PCIe 4.0 x4. The lane sharing footnote is on M.2_2 and M.2_3. With Ryzen 8000 only M.2_1 works, at PCIe 4.0. The full slot list names no SATA mode. The page lists M.2 heatsinks and each of the three PCIe 5.0 slots has a backplate. The ASUS overview says heatsinks for five M.2 slots. A SlimSAS connector at PCIe 4.0 x4 is not an M.2 slot and is not listed.6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026The top three M.2 sockets, M.2_1/2/3, are CPU-connected at PCIe 5.0 x4 and take up to 80 mm. The bottom two take up to 80 mm and connect through the chipset at PCIe 4.0 x4. M.2_2 and M.2_3 together turn off PCIEX16_2.13Spec databasemaxmybuild.com/motherboards/asus-rog-crosshair-x870e-heroRead 15 October 2026Lists a heatsink on all M.2 slots.

BASUS ROG STRIX B850-A GAMING WIFI

Slot	PCIe generation	PCIe lanes	Connected to	Longest drive	Takes SATA drives	Heatsink	Shares lanes with
M.2_1	5	4	CPU	M.2 2280	No	Yes	Not available
M.2_2	4	4	CPU	M.2 22110	No	Yes	Not available
M.2_3	4	4	Chipset	M.2 2280	No	Yes	M.2_3 is disabled when the PCIEX16(G4) slot is used
M.2_4	4	4	Chipset	M.2 2280	No	Yes	Not available

Source1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026Total 4 x M.2 (Key M). Ryzen 9000 and 7000: M.2_1 type 2242/2260/2280 PCIe 5.0 x4 and M.2_2 type 2280/22110 PCIe 4.0 x4. Ryzen 8000: M.2_1 runs PCIe 4.0 x4 and M.2_2 runs PCIe 4.0 x4 or x2. Chipset: M.2_3 and M.2_4 type 2280 PCIe 4.0 x4. The page lists no M.2 SATA support, so sata is false for every slot. M.2_3 is disabled while PCIEX16(G4) is in use.2Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifiRead 14 October 2026Overview: 4 x M.2 slots, 1 x 2280 PCIe 5.0 x4, 2 x 2280 PCIe 4.0 x4 and 1 x 22110 PCIe 4.0 x4. 4 x M.2 heatsinks, with every M.2 slot covered, plus an M.2 backplate.3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_STRIX_B850-A_GAMING_WIFI/E26438_ROG_STRIX_B850-A_GAMING_WIFI_EM_v3_WEB.pdfRead 14 October 2026The specification summary matches the page. M.2_3 shares bandwidth with PCIEX16(G4) and is disabled while that slot works. The manual lists M.2 types and PCIe modes only.

M.2 slots

5=CalculatedFrom M.2 storage slots

4=CalculatedFrom M.2 storage slots

PCIe 5.0 M.2 slots

3=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.

41Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Storage row: 4 x SATA 6Gb/s ports. The SlimSAS connector is not counted.

21Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 20262 x SATA 6Gb/s ports. AMD RAIDXpert2 is listed for 9000, 8000 and 7000.

Rear ports

4 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.

AASUS ROG Crosshair X870E Hero

Type	Version	Count	Max link rate (Gbps)	Thunderbolt or USB4	DP Alt Mode
USB-C	USB4	2	40	USB4	Yes
USB-C	USB 3.2 Gen 2	2	10	Not available	No
USB-A	USB 3.2 Gen 2	6	10	Not available	Not available
HDMI	HDMI 2.1	1	Not available	Not available	Not available
Ethernet (RJ45)	Not available	1	5	Not available	Not available
Ethernet (RJ45)	Not available	1	2.5	Not available	Not available
3.5 mm audio	Not available	2	Not available	Not available	Not available
Optical S/PDIF	Not available	1	Not available	Not available	Not available

Source1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Back Panel I/O Ports: 2 x USB4 (40Gbps) Type-C, 8 x USB 10Gbps (6 Type-A and 2 Type-C), 1 x HDMI, 1 x Intel 2.5Gb Ethernet, 1 x Realtek 5Gb Ethernet, 2 x gold-plated audio jacks, 1 x optical S/PDIF out, 1 x Wi-Fi module, the BIOS FlashBack button and the Clear CMOS button. HDMI supports 4K@60Hz as specified in HDMI 2.1. Only the 2 USB4 ports support USB Type-C display outputs (max 4K@60Hz as specified in DisplayPort 1.4a). The USB4 ports are not Thunderbolt, since ASUS writes USB4 only. The rear USB Type-C power output is not stated.

BASUS ROG STRIX B850-A GAMING WIFI

Type	Version	Count	Max link rate (Gbps)	Power out (W)
USB-C	USB 3.2 Gen 2x2	1	20	Not available
USB-C	USB 3.2 Gen 2	1	10	15
USB-A	USB 3.2 Gen 2	2	10	Not available
USB-A	USB 3.2 Gen 1	4	5	Not available
USB-A	USB 2.0	2	0.48	Not available
HDMI	HDMI 2.1	1	Not available	Not available
DisplayPort	DisplayPort 1.4	1	Not available	Not available
Ethernet (RJ45)	Not available	1	2.5	Not available
3.5 mm audio	Not available	2	Not available	Not available
Optical S/PDIF	Not available	1	Not available	Not available

Source1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026Back panel list: 1 USB 20Gbps (Type-C), 3 USB 10Gbps (2 Type-A and 1 Type-C), 4 USB 5Gbps (Type-A), 2 USB 2.0 (Type-A), 1 DisplayPort (max 8K@30Hz as specified in DisplayPort 1.4), 1 HDMI (4K@60Hz as specified in HDMI 2.1), 1 Wi-Fi module, 1 Intel 2.5Gb Ethernet, 2 audio jacks and 1 optical S/PDIF out. ASUS names USB by speed, so 20Gbps is stored as USB 3.2 Gen 2x2, 10Gbps as USB 3.2 Gen 2 and 5Gbps as USB 3.2 Gen 1. The footnote says USB Type-C power delivery output max 5V/3A, which sits on the 10Gbps Type-C line and is stored as 15 W. The overview page also says USB 10Gbps with up to 30W PD fast-charge. The spec page and the manual say 5V/3A and are stored. The Wi-Fi module and the two buttons are not ports.

Rear USB ports

10=CalculatedFrom Rear ports

10=CalculatedFrom Rear ports

Rear USB-C portsiIncludes Thunderbolt and USB4 ports.

4=CalculatedFrom Rear ports

2=CalculatedFrom Rear ports

Fastest rear USB port

40Gbps=CalculatedFrom Rear ports

20Gbps=CalculatedFrom Rear ports

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

No=CalculatedFrom Rear ports

Not available

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.

AASUS ROG Crosshair X870E Hero

Header	Max data rate (Gbps)	Headers	Front ports served	Power out (W)
USB-C header	20	1	1	60
USB-C header	20	1	1	15
USB 3 header (19-pin)	5	2	4	Not available
USB 2.0 header (9-pin)	0.48	2	4	Not available

Source1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Internal USB: 1 x USB 20Gbps (Type-C, up to 60W PD/QC4+), 1 x USB 20Gbps connector (Type-C), 2 x USB 5Gbps headers for 4 ports and 2 x USB 2.0 headers for 4 ports. The 60 W needs the 8-pin PCIe power connector, or the port gives 27 W. The page also says USB Type-C power delivery output max. 5V/3A, stored as 15 W for the second Type-C connector.

BASUS ROG STRIX B850-A GAMING WIFI

Header	Max data rate (Gbps)	Headers	Front ports served
USB-C header	10	1	1
USB 3 header (19-pin)	5	1	2
USB 2.0 header (9-pin)	0.48	2	4

Source1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026Front USB (total 7 ports): 1 x USB 10Gbps connector (supports USB Type-C), 1 x USB 5Gbps header for 2 ports and 2 x USB 2.0 headers for 4 ports. The Thunderbolt (USB4) header is for an add-in card and is not listed.3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_STRIX_B850-A_GAMING_WIFI/E26438_ROG_STRIX_B850-A_GAMING_WIFI_EM_v3_WEB.pdfRead 14 October 2026Layout contents: 8. USB 10Gbps Type-C front panel connector, 9. USB 5Gbps header, 10. USB 2.0 header (two).

Front USB-C header speed

20Gbps=CalculatedFrom Internal USB headers

10Gbps=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.

81Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Fan and Cooling Related: 1 CPU, 1 CPU OPT, 1 AIO Pump, 4 chassis fan headers and 1 W_PUMP+ header, 8 in total. Tom's Hardware also counts 8.6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec table: 8 four-pin fan and pump headers (CPU, CPUOPT, AIO Pump, Chassis, W_PUMP+).

71Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 20261 CPU fan, 1 CPU OPT fan, 1 AIO pump and 4 chassis fan headers, all 4-pin.

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.

31Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Miscellaneous: 3 x Addressable Gen2 headers.2Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-heroRead 15 October 2026Overview: 3 x 3-pin addressable Gen 2 RGB headers.

31Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 20263 x Addressable Gen 2 headers.

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.

01Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026The complete internal connector list has no 4-pin 12 V RGB header, only 3 addressable Gen2 headers and an ARGB extension cable in the box.

03Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_STRIX_B850-A_GAMING_WIFI/E26438_ROG_STRIX_B850-A_GAMING_WIFI_EM_v3_WEB.pdfRead 14 October 2026The internal connector list names only 3 x Addressable Gen2 headers and no 4-pin RGB header.6Reviewchip.pl/2025/11/asus-rog-strix-b850-a-gaming-wifi-test-recenzja-opiniaRead 14 October 2026The reviewer writes that the board has three ARGB headers and no RGB header.10Spec databasebuildcores.com/products/Motherboard/xy81tonxw/ASUS-ROG-STRIX-B850-A-GAMING-WIFIRead 14 October 2026RGB 12V Headers: 0 and ARGB 5V Headers: 3.

Networking

5 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 RTL8126, Intel I2261Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Ethernet row: 1 x Intel 2.5Gb Ethernet and 1 x Realtek 5Gb Ethernet. The chip names come from Tom's Hardware (Intel i-226 and Realtek 8126).6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec table: Intel i-226 (2.5 GbE) and Realtek 8126 (5 GbE). Stored without suffix letters.8Reviewkitguru.net/components/motherboard/leo-waldock/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec list: Realtek 5Gbps and Intel 2.5Gbps Ethernet.

Intel I2266Reviewchip.pl/2025/11/asus-rog-strix-b850-a-gaming-wifi-test-recenzja-opiniaRead 14 October 2026The review names an Intel I226-V 2.5 Gb Ethernet chip. ASUS writes only Intel 2.5Gb Ethernet. The -V suffix is dropped.

Ethernet ports

2=CalculatedFrom Rear ports

1=CalculatedFrom Rear ports

Ethernet speediFastest Ethernet port.

5Gbps=CalculatedFrom Rear ports

2.5Gbps=CalculatedFrom Rear ports

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

Yes1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Wireless row: Wi-Fi 7 and 1 x Wi-Fi module on the back panel, with the Q-Antenna in the box.

Yes1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026A Wi-Fi module is listed on the back panel (1 x Wi-Fi module).

Wi-Fi standard

Wi-Fi 71Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Wireless row: Wi-Fi 7, 2x2, 802.11be.6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec table: Wi-Fi 7 2x2.

Wi-Fi 71Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 20262x2 Wi-Fi 7 (802.11be).

Wi-Fi bandsiBands the installed module supports.

2.4 GHz, 5 GHz, 6 GHz1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Wireless row: supports 2.4/5/6GHz frequency band.

2.4 GHz, 5 GHz, 6 GHz1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026Supports 2.4/5/6GHz frequency band. The 6 GHz band and bandwidth vary by country.

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.

320MHz1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Wireless row: supports Wi-Fi 7 320MHz bandwidth.6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec table: 320 MHz.

160MHz1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026Supports Wi-Fi 7 160MHz bandwidth, up to 2.9Gbps. The overview page also says 160 MHz channels on 6GHz.

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.

MediaTek MT79271Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Wireless row: Wi-Fi 7 (Qualcomm QCNCM865 or MediaTek MT7927). The actual module may vary, so see the label on the product. The reviewed boards had the MediaTek MT7927, so it is the base value.8Reviewkitguru.net/components/motherboard/leo-waldock/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec list: Wireless: MediaTek MT7927 Wi-Fi 7, Bluetooth 5.4.

MediaTek MT79256Reviewchip.pl/2025/11/asus-rog-strix-b850-a-gaming-wifi-test-recenzja-opiniaRead 14 October 2026The review names Wi-Fi 7 MediaTek MT7925 with Bluetooth 5.4. ASUS does not name the module. The 160 MHz and 2.9 Gbps figures on the ASUS page fit this module.

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

5.41Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Wireless row: Bluetooth v5.4. The Bluetooth version may vary with the Wi-Fi module.6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec table: BT 5.4.

5.41Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026Bluetooth v5.4. The page says the version may vary and refers to the Wi-Fi module maker.

Audio

2 of 2 differ

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

Realtek ALC40821Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Audio row: ROG SupremeFX 7.1 Surround Sound High Definition Audio CODEC ALC4082. The codec is a Realtek part (Tom's Hardware: Realtek ALC4082).6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec table: Realtek ALC4082 w/ESS Sabre9219 DAC.

Realtek ALC40801Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026ROG SupremeFX 7.1 Surround Sound High Definition Audio CODEC ALC4080 with a Savitech SV3H712 amplifier. The Savitech part is an amplifier and is not stored as a DAC.

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.

ESS ES92191Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Audio features: ESS ES9219 QUAD DAC.6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec table: ESS Sabre9219. ASUS names it ESS ES9219.

Not available

Features

2 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.

Yes1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Back Panel I/O Ports: 1 x BIOS FlashBack button.

Yes1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026BIOS FlashBack button on the back panel.

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.

Yes1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Back Panel I/O Ports: 1 x Clear CMOS button.

Yes1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026Clear CMOS button on the back panel.

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.

Yes1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026ASUS Q-Design lists Q-Code and Q-LED (CPU, DRAM, VGA, Boot Device). The manual's layout lists a Q-Code LED that shows a 2-digit error code.3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_CROSSHAIR_X870E_HERO/E27104_ROG_CROSSHAIR_X870E_HERO_EM_V5_WEB.pdfRead 15 October 2026Layout item 21, Q-Code LED: a 2-digit error code that displays the system status.6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec table: Diagnostics Panel with Q-Code and Q-LED.

No3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_STRIX_B850-A_GAMING_WIFI/E26438_ROG_STRIX_B850-A_GAMING_WIFI_EM_v3_WEB.pdfRead 14 October 2026The layout contents list Q-LEDs (CPU, DRAM, VGA and boot device), a BIOS FlashBack LED and an 8-pin CPU power plug LED. No two-digit code display is listed in the specification summary or the layout. The manual never states that it is absent.

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.

Yes1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Miscellaneous and Extreme OC Kit: 1 x Start button. The manual says it powers up the system or puts it to sleep or soft-off.3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_CROSSHAIR_X870E_HERO/E27104_ROG_CROSSHAIR_X870E_HERO_EM_V5_WEB.pdfRead 15 October 2026Layout item 19, Start button: press it to power up the system, or put the system into sleep or soft-off mode.6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec table: internal buttons are Start, Flex, Retry and an alternate PCIe mode switch.

Yes1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026Internal connectors, miscellaneous: 1 x Power button.3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_STRIX_B850-A_GAMING_WIFI/E26438_ROG_STRIX_B850-A_GAMING_WIFI_EM_v3_WEB.pdfRead 14 October 2026Layout item 14: Start button, which powers up the system.

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

No1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026BIOS row: 256Mb Flash ROM, UEFI AMI BIOS. Dual BIOS is not stated.

Not available

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

Yes1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026ASUS EZ DIY lists a pre-mounted I/O shield.

Yes1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026ASUS EZ DIY list: Pre-mounted I/O shield.

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 release, Push-on antenna connector1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026ASUS Q-Design: M.2 Q-Latch (tool-free SSD latch), M.2 Q-Release (removes the M.2 heatsink without screws), M.2 Q-Slide, Q-Release Slim (PCIe slot release, with SafeSlot) and Q-Antenna (the antenna snaps into place).2Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-heroRead 15 October 2026Overview: Q-Release for the M.2 heatsink (a switch frees it), the new M.2 Q-Latch, PCIe Slot Q-Release Slim and Q-Antenna are described.6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026The review describes the Q-Release Slim PCIe slot, which releases the card without a button.

Tool-free M.2 latch, Tool-free M.2 heatsink, PCIe slot release, Push-on antenna connector1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026ASUS Q-Design: M.2 Q-Latch, M.2 Q-Release, M.2 Q-Slide, PCIe Slot Q-Release Slim and Q-Antenna.2Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifiRead 14 October 2026Q-Release lets the M.2 heatsink come off with a switch and no tiny screws. Q-Latch installs M.2 SSDs with one press. PCIe Slot Q-Release Slim unlocks the card by tilting it. Q-Antenna snaps the Wi-Fi antenna into place.

Measured

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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.

46°C7Measurementtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-review/3Read 15 October 2026CPU at stock, AIDA64 stress test on all threads for 30 minutes, about 24 C ambient. The test system on page 2 is a Ryzen 9 9900X with an Arctic Liquid Freezer II 420. The CPU drew about 145 W. The review text says the VRM peaked just under 46 C, and the sentence names the Taichi, which looks like a copied word. The chart for this board shows thermocouple 1 at about 45.8 C after 30 minutes. The HWiNFO VRM sensor line is higher at about 47 C. The probe reading is stored, rounded to 46. The exact value is not printed.

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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.

103W7Measurementtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-review/3Read 15 October 2026Whole test system idle at the wall with a Kill-A-Watt meter, Windows Balanced power plan, a Ryzen 9 9900X system. Chart and text: idle 103 W.

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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.

245W7Measurementtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-review/3Read 15 October 2026Peak of the whole test system at the wall (Kill-A-Watt) during the AIDA64 System Stability Test with Stress CPU, FPU, Cache and Memory enabled. The graphics card was not stressed. Stock settings. Chart and text: load 245 W, with the CPU using around 145 W.

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In the box

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In the boxiItems as the maker lists them.

1 x ARGB RGB extension cable, 4 x SATA 6Gb/s cables, 1 x ASUS WiFi Q-Antenna, 1 x Q-connector, 2 x M.2 Q-Latch package, 3 x M.2 Q-Slide package, 5 x M.2 rubber package, 1 x ROG stickers, 1 x ROG thank you card, 1 x ROG Bottle Opener, 1 x USB drive with utilities and drivers, 1 x Quick start guide1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Accessories row: cables, miscellaneous, installation media and documentation, as listed.

2 x SATA 6Gb/s cables, 1 x ASUS WiFi Q-Antenna, 1 x Cable ties package, 1 x M.2 Q-Latch package, 1 x M.2 Q-Slide package, 1 x ROG key chain, 1 x ROG Strix stickers, 4 x M.2 rubbers, 1 x Quick start guide1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026Accessories list on the specification page, the same as the manual's package contents.

Links

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Product page

rog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026The maker's product page, features tab.

rog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi2Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifiRead 14 October 2026

Spec sheet

rog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/spec1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026The maker's Tech Specs tab, read on 2026-10-15.

rog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/spec1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b850-a-gaming-wifi/specRead 14 October 2026

Manual

dlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_CROSSHAIR_X870E_HERO/E27104_ROG_CROSSHAIR_X870E_HERO_EM_V5_WEB.pdf3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_CROSSHAIR_X870E_HERO/E27104_ROG_CROSSHAIR_X870E_HERO_EM_V5_WEB.pdfRead 15 October 2026ASUS user's manual E27104 (EM V5), English edition, found through the ASUS support API manual list for this model. It also covers the model number in its title.

dlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_STRIX_B850-A_GAMING_WIFI/E26438_ROG_STRIX_B850-A_GAMING_WIFI_EM_v3_WEB.pdf3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_STRIX_B850-A_GAMING_WIFI/E26438_ROG_STRIX_B850-A_GAMING_WIFI_EM_v3_WEB.pdfRead 14 October 2026ASUS user guide E26438, Revised Edition v3, June 2025, from dlcdnets.asus.com.

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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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.

3years6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec table: Warranty 3 Years. The review is a US review.10Retailer pagearvutitark.ee/en/pc-components/motherboards/asus-rog-crosshair-x870e-hero-amd-x870e-socket-am5-atx-1402616Read 15 October 2026The listing gives Warranty (months) 36 in Estonia.

3years8Retailer pageamazon.com/dp/B0DPLP33YRRead 14 October 2026Warranty Description: 3 Years (US listing).9Retailer pagescan.co.uk/products/asus-rog-strix-b850-a-gaming-wifiRead 14 October 2026Scan UK: 36 months return to base.

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