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ASRock B850 Pro RS WiFi vs ASUS TUF GAMING X870-PLUS WIFI

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Product A: ASRock

B850 Pro RS WiFi

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B

Product B: ASUS

TUF GAMING X870-PLUS WIFI

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Only differences

AASRock B850 Pro RS WiFi

BASUS TUF GAMING X870-PLUS WIFI

General

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Series

Pro1Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026Chapter 1 calls the B850 Pro RS WiFi and the B850 Pro RS one family. The shop copy of ASRock's text calls the Race Sport (RS) Edition an evolution of the PRO series.

TUF Gaming2Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifiRead 16 October 2026TUF Gaming is the ASUS line in the product name.

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

B850 Pro RS WiFi, 90-MXBQL0-A0UAYZ1Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026Manual cover: B850 Pro RS WiFi. The order code 90-MXBQL0-A0UAYZ comes from the retailer listings below.5Retailer pagearvutitark.ee/en/pc-components/motherboards/mb-asrock-amd-am5-b850-pro-rs-wifi-1425695Read 15 October 2026Product code 90-MXBQL0-A0UAYZ.6Retailer pageshop.mnetworks.dk/asrock-b850-pro-rs-wifi/cat-p/c/p1005560262Read 15 October 2026Part number 90-MXBQL0-A0UAYZ.

TUF GAMING X870-PLUS WIFI, 90MB1IU0-M0EAY01Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026The page names the model TUF GAMING X870-PLUS WIFI. The part number 90MB1IU0-M0EAY0 is on LDLC Pro and the Captech listing.6Retailer pageldlc.pro/fiche/PB00633568.htmlRead 16 October 2026The data sheet lists the model as 90MB1IU0-M0EAY0.

GTIN / EAN

47115814901786Retailer pageshop.mnetworks.dk/asrock-b850-pro-rs-wifi/cat-p/c/p1005560262Read 15 October 2026Lists EAN 4711581490178 for part number 90-MXBQL0-A0UAYZ.7Retailer pagekomputronik.pl/product/955011/plyta-glowna-asrock-b850-pro-rs-wifi.htmlRead 15 October 2026Lists Kod EAN 4711581490178 for manufacturer code B850 Pro RS WiFi.

47113877236097Retailer pageshop.captech.se/en-GB/Article/121025Read 16 October 2026Captech lists SKU 90MB1IU0-M0EAY0 with EAN 4711387723609. Several other retailers list the same pair.

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

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Status

Available4Reviewtech2geek.net/asrock-b850-pro-rs-wi-fi-review-the-budget-motherboard-that-nails-am5-performanceRead 15 October 2026Review of 2025-11-28 with an Amazon price of $159. The board was on sale then.5Retailer pagearvutitark.ee/en/pc-components/motherboards/mb-asrock-amd-am5-b850-pro-rs-wifi-1425695Read 15 October 2026The listing shows 10 pieces available to order on 2026-10-15.

Available13Retailer pagemaxmybuild.com/motherboards/asus-tuf-gaming-x870-plus-wifiRead 16 October 2026Lists the board in stock at two retailers on 2026-10-15.

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

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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.

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

$189.992Reviewtech4gamers.com/asrock-b850-pro-rs-wifi-reviewRead 15 October 2026The review's spec table says MSRP $189.99 USD and the summary calls the board a $189.99 motherboard. US price, excl. sales tax. It is a reviewer's statement, not ASRock's.

$309.9910Reviewlanoc.org/review/motherboards/asus-tuf-gaming-x870-plus-wifiRead 16 October 2026The conclusion names a 309.99 MSRP in US dollars. US MSRPs exclude sales tax. The review is from the launch period of the X870 boards.12Press articleguru3d.com/story/x870e-and-x870-chipset-motherboards-pricing-overviewRead 16 October 2026Guru3D, 2024-10-01, X870E and X870 pricing overview: ASUS TUF Gaming X870-PLUS WIFI $309.99. This agrees with LanOC. US MSRPs exclude sales tax.

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

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

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ColoursiThe maker's own colour names

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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.

Mainstream1Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026The board is an ASRock Pro series board (Pro RS). It is not a Phantom Gaming, Steel Legend or Taichi board, so it is mainstream by the field rule.

Gaming1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026The page sits in the ASUS TUF Gaming family.

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.

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Platform

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

AM51Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026

AM51Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 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 manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026

AMD X8701Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 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 manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026Specifications, page 2: AMD Socket AM5 Ryzen 9000, 8000 and 7000 Series Processors. The manual refers to the maker's website for the CPU support list. Read on 2026-10-15.

AMD Ryzen 9000 Series, AMD Ryzen 8000 Series, AMD Ryzen 7000 Series1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026AM5 for Ryzen 9000, 8000 and 7000 Series. The page refers to the ASUS download center for the CPU support list. Read on 2026-10-16.

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

Yes10Maker product pageamd.com/en/products/processors/chipsets/am5.htmlRead 15 October 2026AMD's chipset page says the B850 platform has enhanced overclocking capabilities and DDR5 memory overclocking with EXPO. This is the chip maker's page, not the board maker's.

Yes2Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifiRead 16 October 2026The page lists Dynamic OC Switcher, Core Flex and AI Overclocking for the CPU. AMD's chipset page and LDLC Pro also state overclocking.5Maker product pageamd.com/en/products/processors/chipsets/am5.htmlRead 16 October 2026AMD's chipset page says an AMD X870 motherboard is fully overclockable. This is the chip maker's page, not the board maker's.6Retailer pageldlc.pro/fiche/PB00633568.htmlRead 16 October 2026The data sheet lists advanced overclocking features: yes.

Board

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

ATX1Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026Specifications, page 2: ATX Form Factor.

ATX1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 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)2Reviewtech4gamers.com/asrock-b850-pro-rs-wifi-reviewRead 15 October 2026Spec table: size 305 mm x 244 mm, ATX.6Retailer pageshop.mnetworks.dk/asrock-b850-pro-rs-wifi/cat-p/c/p1005560262Read 15 October 2026ATX Form Factor: 12.0-in x 9.6-in, 30.5 cm x 24.4 cm.7Retailer pagekomputronik.pl/product/955011/plyta-glowna-asrock-b850-pro-rs-wifi.htmlRead 15 October 2026Dimensions table: 244 mm and 305 mm.12Retailer pagecomputermania.co.za/products/asrock-b850-pro-rs-wi-fi-atx-motherboard-amd-am5-ddr5-pcie-5-0Read 15 October 2026Spec copy: ATX Form Factor (30.5 cm x 24.4 cm).

Width244Height305mm(9.6 × 12 in)1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026ATX form factor, 12 inch x 9.6 inch (30.5 cm x 24.4 cm).

PCB layersiCopper layers in the circuit board as published.

81Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026Specifications, page 2: 8 Layer PCB.2Reviewtech4gamers.com/asrock-b850-pro-rs-wifi-reviewRead 15 October 2026Text: an 8-layer PCB design.4Reviewtech2geek.net/asrock-b850-pro-rs-wi-fi-review-the-budget-motherboard-that-nails-am5-performanceRead 15 October 2026A black 8-layer PCB.

82Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifiRead 16 October 2026Overview page: Eight Layered PCB design.8Reviewmezha.media/en/reviews/asus-tuf-gaming-x870-plus-wifi-motherboard-review-acceleration-with-pci-e-5-0-usb4-and-wifi-7Read 16 October 2026The text names an 8-layer 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 manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026The layout on pages 7 and 8 shows the usual front-side power, fan and USB connectors. The board is not a back-connect design.

No3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/TUF_GAMING_X870-PLUS_WIFI/E25811_TUF_GAMING_X870-PLUS_WIFI_EM_V2_WEB.pdfRead 16 October 2026The layout shows the usual front-side power, fan and USB connectors. 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.

Yes2Reviewtech4gamers.com/asrock-b850-pro-rs-wifi-reviewRead 15 October 2026The text says the board has RGB lighting under the armor of the 3rd and 4th M.2 slots. Tech2Geek describes an aRGB zone on the shared M.2 heatsink. The maker's text that was readable names only the Polychrome RGB headers.4Reviewtech2geek.net/asrock-b850-pro-rs-wi-fi-review-the-budget-motherboard-that-nails-am5-performanceRead 15 October 2026An aRGB zone is integrated in the heatsink shared by two M.2 slots, with customizable lighting. The box names Polychrome Sync aRGB technology.

Yes2Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifiRead 16 October 2026The overview page lists Aura Edge Lighting and says the board features edge lighting.8Reviewmezha.media/en/reviews/asus-tuf-gaming-x870-plus-wifi-motherboard-review-acceleration-with-pci-e-5-0-usb4-and-wifi-7Read 16 October 2026A small island of lighting next to the SATA ports on the PCB edge, lighting the TUF segment logo.10Reviewlanoc.org/review/motherboards/asus-tuf-gaming-x870-plus-wifiRead 16 October 2026Underglow lighting under the right side of the board, on the bottom half.

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+12Reviewtech4gamers.com/asrock-b850-pro-rs-wifi-reviewRead 15 October 2026The same 14+2+1 power phase design with the same 80A SPS for VCore, SOC and MISC.4Reviewtech2geek.net/asrock-b850-pro-rs-wi-fi-review-the-budget-motherboard-that-nails-am5-performanceRead 15 October 2026Two aluminum heatsinks cool the power delivery (14 + 2 + 1, SPS 80A for Vcore, SOC and MISC), with no heatpipe between them.5Retailer pagearvutitark.ee/en/pc-components/motherboards/mb-asrock-amd-am5-b850-pro-rs-wifi-1425695Read 15 October 2026The shop copies ASRock's feature text: 14+2+1 Phase Power Design, 80A Dr.MOS for VCore+SOC+MISC.9Press articleweekly.ascii.jp/elem/000/004/244/4244804Read 15 October 2026Calls it the ATX model of the Pro RS series with a 14+2+1 phase power circuit using Dr.MOS.

16+2+12Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifiRead 16 October 202616(80A)+2(80A)+1(80A) power stages: 16 Vcore (SPS), 2 SOC (SPS) and 1 Misc (DrMOS).

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.

142Reviewtech4gamers.com/asrock-b850-pro-rs-wifi-reviewRead 15 October 202614 Vcore phases of the 14+2+1 design.4Reviewtech2geek.net/asrock-b850-pro-rs-wi-fi-review-the-budget-motherboard-that-nails-am5-performanceRead 15 October 202614 Vcore stages of the 14+2+1 design.5Retailer pagearvutitark.ee/en/pc-components/motherboards/mb-asrock-amd-am5-b850-pro-rs-wifi-1425695Read 15 October 2026The first number of 14+2+1 is the Vcore rail.

162Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifiRead 16 October 202616 Vcore power stages (80A, SPS).

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.

80A2Reviewtech4gamers.com/asrock-b850-pro-rs-wifi-reviewRead 15 October 202680A SPS for VCore, SOC and MISC.4Reviewtech2geek.net/asrock-b850-pro-rs-wi-fi-review-the-budget-motherboard-that-nails-am5-performanceRead 15 October 2026SPS 80A for Vcore, SOC and MISC.5Retailer pagearvutitark.ee/en/pc-components/motherboards/mb-asrock-amd-am5-b850-pro-rs-wifi-1425695Read 15 October 202680A Dr.MOS for VCore+SOC+MISC, as the shop copies ASRock's text.

80A2Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifiRead 16 October 2026Each Vcore power stage is rated 80 A. The SOC and Misc stages are also 80 A.

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.

Not available

ASUS ASP22068Reviewmezha.media/en/reviews/asus-tuf-gaming-x870-plus-wifi-motherboard-review-acceleration-with-pci-e-5-0-usb4-and-wifi-7Read 16 October 2026The 19-phase (16+2+1) VRM has an Infineon ASP2206 controller with MPS MP86670 and Vishay SiC629 80 A stages. ASUS does not name the controller. Tech-Critter says the same. Stored as ASUS ASP2206, the form used for another ASUS board in the catalog.9Reviewtech-critter.com/asus-tuf-gaming-x870-plus-wifi-hands-on-reviewRead 16 October 2026The review names the Infineon ASP2206 controller with MPS MP86670 and Vishay SiC629 power stages rated 80 A.

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 manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026Connector list: 1 x 24 pin ATX power connector and 2 x 8 pin 12V power connectors (Hi-Density Power Connector).

8+8 pin1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026Internal connectors: 2 x 8-pin +12V CPU power connectors and the 24-pin main power connector.2Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifiRead 16 October 2026ProCool power connectors: proprietary 8+8 pin connectors.

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.

No1Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026The connector list has no extra slot power connector. The manual never states that one is absent.

No1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026The internal connector list has no extra slot power connector.

Memory

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Memory type

DDR51Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026

DDR51Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026

Memory slotsiDIMM slots on the board.

41Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026

41Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 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 manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026Specifications, page 2: 4 x DDR5 DIMM slots, max. capacity of system memory 256GB, dual channel.

256GB1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026The page and the manual say 4 x DIMM slots, max. 256GB. Some retailer copies say 192GB.3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/TUF_GAMING_X870-PLUS_WIFI/E25811_TUF_GAMING_X870-PLUS_WIFI_EM_V2_WEB.pdfRead 16 October 2026Specifications summary: 4 x DIMM slots. The manual's memory row gives no total. The product page says max. 256GB.

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.

8,000MT/s1Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026Supports DDR5 ECC/non-ECC, un-buffered memory up to 8000+(OC). The manual names no CPU family or module setup. It refers to the Memory Support List on the maker's website.

8,000MT/s1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026Up to 8000+MT/s (OC) with Ryzen 9000, 8000 and 7000 Series. The Ryzen 9000 value is stored. The page says supported speeds and module counts vary with the CPU and memory configuration.

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.

Yes1Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026The manual says DDR5 ECC/non-ECC, un-buffered memory. It does not say whether ECC is active with each CPU.

Yes1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026The page lists ECC and non-ECC unbuffered DIMM. It does not say how ECC works with each CPU. The page also says non-ECC DDR5 supports On-Die 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.

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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.

AASRock B850 Pro RS WiFi

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

Source1Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026CPU: 1 x PCIe 5.0 x16 slot (PCIE1) at x16. PCIE1 runs Gen5x16 with Ryzen 9000 and 7000, Gen4x8 with Ryzen 8000 (Phoenix 1) and Gen4x4 with Ryzen 8000 (Phoenix 2). Chipset: 1 x PCIe 4.0 x16 slot (PCIE2) at x4, which is disabled when M2_3 is occupied. The M.2 socket (Key E) for the Wi-Fi module is not listed.

BASUS TUF GAMING X870-PLUS WIFI

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

Source1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026Ryzen 9000 and 7000: 1 x PCIe 5.0 x16 slot (x16 mode). Ryzen 8000: PCIe 4.0 x16 at x8 or x4. Chipset: 1 x PCIe 4.0 x16 slot at x4. PCIEX16(G5) runs at x8 when M.2_2 is used. PCIEX16(G4) is disabled when M.2_4 is used.3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/TUF_GAMING_X870-PLUS_WIFI/E25811_TUF_GAMING_X870-PLUS_WIFI_EM_V2_WEB.pdfRead 16 October 2026Layout and the shared bandwidth tables: PCIEX16(G5) runs x8 when M.2_2 is enabled. PCIEX16(G4) is disabled when M.2_4 is enabled.

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.

AASRock B850 Pro RS WiFi

Slot	PCIe generation	PCIe lanes	Connected to	Longest drive	Takes SATA drives	Heatsink	Shares lanes with
M2_1	5	4	CPU	M.2 2280	No	Yes	Not available
M2_2	4	4	CPU	M.2 2280	No	No	Not available
M2_3	4	4	Chipset	M.2 2280	No	Yes	PCIE2 is disabled when M2_3 is used
M2_4	3	4	Chipset	M.2 2280	No	Yes	M2_4 runs at PCIe 3.0 x2 when SATA3_1 or SATA3_2 is used

Source1Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026CPU: M2_1 (Blazing M.2, Key M) type 2280 PCIe Gen5x4 and M2_2 (Hyper M.2) type 2280 PCIe Gen4x4. M2_1 runs Gen5x4 with Ryzen 9000 and 7000 and Gen4x4 with Ryzen 8000. M2_2 runs Gen4x4 with Ryzen 9000, 7000 and 8000 (Phoenix 1) and Gen4x2 with 8000 (Phoenix 2). Chipset: M2_3 (Hyper M.2) type 2230/2242/2260/2280 PCIe Gen4x4 and M2_4 (Ultra M.2) type 2280 PCIe Gen3x4. 2280 is stored for M2_3. If M2_3 is occupied PCIE2 is disabled. If SATA3_1 or SATA3_2 is occupied M2_4 downgrades to Gen3x2. The manual lists every slot with PCIe modes only, so sata is false. The install guides in sections 2.16 to 2.19 show a heatsink to remove on M2_1, M2_3 and M2_4 and none on M2_2. Tech4Gamers confirms three of four slots have heatsinks and M2_2 has none.2Reviewtech4gamers.com/asrock-b850-pro-rs-wifi-reviewRead 15 October 2026M.2_1 is PCIe Gen5, M.2_2 and M.2_3 are PCIe Gen4 and M.2_4 is PCIe Gen3. Only 3 out of 4 slots have heatsinks, and M.2_2 has none. M.2_4 drops to Gen3x2 when SATA3_1 and SATA3_2 are used.

BASUS TUF GAMING X870-PLUS 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	5	4	CPU	M.2 2280	No	Yes	PCIEX16(G5) slot runs at x8 when M.2_2 is used
M.2_3	4	4	Chipset	M.2 2280	No	Yes	Not available
M.2_4	4	4	Chipset	M.2 22110	No	No	PCIEX16(G4) slot is disabled when M.2_4 is used

Source1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026Ryzen 9000 and 7000: M.2_1 and M.2_2 are Key M, type 2280, PCIe 5.0 x4. Ryzen 8000: M.2_1 runs PCIe 4.0 x4 and M.2_2 does not work. Chipset: M.2_3 is type 2280, PCIe 4.0 x4. M.2_4 is type 2242/2260/2280/22110, PCIe 4.0 x4. The page lists only PCIe modes for the slots, so SATA is false.2Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifiRead 16 October 2026The overview page lists Two M.2 Heatsinks for Three M.2 Slots. It does not say which slots. Mezha says one heatsink covers M.2_1 and a shared block covers M.2_2 and M.2_3.3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/TUF_GAMING_X870-PLUS_WIFI/E25811_TUF_GAMING_X870-PLUS_WIFI_EM_V2_WEB.pdfRead 16 October 2026Chapter 1 item 6 lists the M.2 types and PCIe modes per CPU family. M.2_2 will not work with a Ryzen 8000 processor.8Reviewmezha.media/en/reviews/asus-tuf-gaming-x870-plus-wifi-motherboard-review-acceleration-with-pci-e-5-0-usb4-and-wifi-7Read 16 October 2026M.2_1 has a separate cooler. M.2_2 and M.2_3 share a radiator block with four screws. M.2_4 has no standard cooler. All M.2 ports take PCIe drives only and M.2 SATA is not provided.

M.2 slots

4=CalculatedFrom M.2 storage slots

4=CalculatedFrom M.2 storage slots

PCIe 5.0 M.2 slots

1=CalculatedFrom M.2 storage slots

2=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 manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026Specifications: 2 x SATA3 6.0 Gb/s connectors on the chipset and 2 x SATA3 6.0 Gb/s connectors on an ASMedia ASM1061.

21Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 20262 x SATA 6Gb/s ports. AMD RAIDXpert2 supports SATA RAID 0/1.

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.

AASRock B850 Pro RS WiFi

Type	Version	Count	Max link rate (Gbps)	DP Alt Mode
USB-C	USB 3.2 Gen 2	1	10	Not available
USB-C	USB 3.2 Gen 1	1	5	Yes
USB-A	USB 3.2 Gen 1	4	5	Not available
USB-A	USB 2.0	6	0.48	Not available
HDMI	HDMI 2.1	1	Not available	Not available
Ethernet (RJ45)	Not available	1	2.5	Not available
3.5 mm audio	Not available	3	Not available	Not available

Source1Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026Specifications and section 1.4 rear panel: 1 HDMI (HDMI 2.1 TMDS/FRL 8G compatible, up to 4K 120Hz), 1 USB 3.2 Gen2 Type-C (10 Gb/s), 1 USB 3.2 Gen1 Type-C (DP-alt mode DP1.4a, up to 4K 60Hz), 4 USB 3.2 Gen1 Type-A, 6 USB 2.0, 1 RJ-45 2.5G LAN and 3 HD audio jacks (Line in, Front Speaker, Microphone). The block diagram prints 5Gb/s for the Gen2 Type-C port, which the specifications list as 10 Gb/s. The specifications are stored. The two antenna ports and the BIOS Flashback button are not ports.

BASUS TUF GAMING X870-PLUS WIFI

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	3	10	Not available	Not available	Not available
USB-A	USB 3.2 Gen 1	4	5	Not available	Not available	Not available
USB-A	USB 2.0	1	0.48	Not available	Not available	Not available
HDMI	HDMI 2.1	1	Not available	Not available	Not available	Not available
Ethernet (RJ45)	Not available	1	2.5	Not available	Not available	Not available
3.5 mm audio	Not available	5	Not available	Not available	Not available	Not available

Source1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026Back panel list: 2 USB4 (40Gbps) Type-C with display output, 3 USB 10Gbps Type-A, 4 USB 5Gbps Type-A, 1 USB 2.0 Type-A, 1 HDMI (4K@60Hz as specified in HDMI 2.1), 1 Realtek 2.5Gb Ethernet, 5 audio jacks, the Wi-Fi module and the BIOS FlashBack button. ASUS names USB by speed, so 10Gbps is stored as USB 3.2 Gen 2 and 5Gbps as USB 3.2 Gen 1. The USB4 ports support DisplayPort 1.4a output up to 4K@60Hz. Their Type-C power delivery output is max. 5V/3A, stored as 15 W. There is no optical S/PDIF port.

Rear USB ports

12=CalculatedFrom Rear ports

10=CalculatedFrom Rear ports

Rear USB-C portsiIncludes Thunderbolt and USB4 ports.

2=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.

AASRock B850 Pro RS 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 manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026Connector list: 1 x Front Panel Type C USB 3.2 Gen2x2 header (20 Gb/s), 2 x USB 3.2 Gen1 headers for 4 ports and 2 x USB 2.0 headers for 4 ports. The manual states no USB power output.

BASUS TUF GAMING X870-PLUS WIFI

Header	Max data rate (Gbps)	Headers	Front ports served	Power out (W)
USB-C header	20	1	1	30
USB 3 header (19-pin)	5	1	2	Not available
USB 2.0 header (9-pin)	0.48	2	4	Not available

Source1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 20261 x USB 20Gbps connector (Type-C, up to 30W PD fast charge: 5V/9V max 3A, 12V max 2.5A, 15V max 2A), 1 x USB 5Gbps header for 2 ports and 2 x USB 2.0 headers for 4 ports.

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.

71Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026Connector list: 2 x CPU fan connectors, 4 x chassis fan connectors and 1 x AIO pump fan connector, all 4-pin.

81Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026CPU fan, CPU OPT fan, AIO pump, 4 chassis fan headers and 1 W_PUMP+ header, 8 in all. All 4-pin.3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/TUF_GAMING_X870-PLUS_WIFI/E25811_TUF_GAMING_X870-PLUS_WIFI_EM_V2_WEB.pdfRead 16 October 2026Fan and pump header table: CPU_FAN, CPU_OPT, CHA_FAN1 to CHA_FAN4, AIO_PUMP (1 A each) and W_PUMP+ (3 A).

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 manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026Connector list: 3 x Addressable LED headers (up to 5V/3A, 15W in total).

31Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 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.

11Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026Connector list: 1 x RGB LED header (up to 12V/3A, 36W in total).

01Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026The internal connector list has 3 Addressable Gen 2 headers and no 12 V RGB header.

Networking

4 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 RTL81251Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026Specifications: 2.5 Gigabit LAN with the Dragon RTL8125BG. The block diagram labels it Realtek 2.5G LAN RTL8125BG. The suffix BG is stored without letters.2Reviewtech4gamers.com/asrock-b850-pro-rs-wifi-reviewRead 15 October 2026Dragon RTL8125BG LAN controller, up to 2.5G.

Realtek RTL81258Reviewmezha.media/en/reviews/asus-tuf-gaming-x870-plus-wifi-motherboard-review-acceleration-with-pci-e-5-0-usb4-and-wifi-7Read 16 October 2026Spec table: 1x 2.5 GbE LAN (Realtek RTL8125BG). The suffix BG is left out.

Ethernet ports

1=CalculatedFrom Rear ports

1=CalculatedFrom Rear ports

Ethernet speediFastest Ethernet port.

2.5Gbps=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.

Yes1Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026Section 1.6 and specifications: the B850 Pro RS WiFi comes with an 802.11axe Wi-Fi 6E and BT module in the Key E socket.

Yes1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 20261 x Wi-Fi module is listed on the back panel.

Wi-Fi standard

Wi-Fi 6E1Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026Specifications: 802.11axe Wi-Fi 6E module, IEEE 802.11a/b/g/n/ac/ax/axe, dual-band 2x2 with extended 6GHz band support.

Wi-Fi 71Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 20262x2 Wi-Fi 7 (802.11be).

Wi-Fi bandsiBands the installed module supports.

2.4 GHz, 5 GHz, 6 GHz1Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026The module has an extended 6GHz band and the antennas are named ASRock WiFi 2.4/5/6 GHz Antennas. The 6 GHz band depends on Windows 11 and on country rules.

2.4 GHz, 5 GHz, 6 GHz1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026Supports 2.4/5/6GHz. 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.

Not available

160MHz1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026Wi-Fi 7 160MHz bandwidth, up to 2.9 Gbps.8Reviewmezha.media/en/reviews/asus-tuf-gaming-x870-plus-wifi-motherboard-review-acceleration-with-pci-e-5-0-usb4-and-wifi-7Read 16 October 2026The text says the module supports 160 MHz instead of the 320 MHz of top modules.

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.

Not available

MediaTek MT79258Reviewmezha.media/en/reviews/asus-tuf-gaming-x870-plus-wifi-motherboard-review-acceleration-with-pci-e-5-0-usb4-and-wifi-7Read 16 October 2026Spec table and text: MediaTek MT7925 Wi-Fi 7 module, tri-band, 160 MHz, Bluetooth 5.4.

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

5.21Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026Specifications and section 1.6: Bluetooth 5.2.

5.41Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026Bluetooth v5.4. The page says the version may vary and refers to the Wi-Fi module maker.

Audio

1 of 2 differ

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

Realtek ALC8971Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026Specifications: 7.1 CH HD Audio (Realtek ALC897 Audio Codec) with Nahimic Audio.2Reviewtech4gamers.com/asrock-b850-pro-rs-wifi-reviewRead 15 October 2026Realtek ALC897 audio codec.

Realtek ALC1220P1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026Realtek ALC1220P 7.1 Surround Sound High Definition 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

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.

Yes1Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 20261 x BIOS Flashback button on the rear panel. Section 2.13 calls it the only smart switch.

Yes1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 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.

No1Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026The layout lists a Clear CMOS jumper (CLRCMOS1). The only rear panel button is BIOS Flashback.

No1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026The back panel list has only the BIOS FlashBack button. Clear CMOS is a header on the board.3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/TUF_GAMING_X870-PLUS_WIFI/E25811_TUF_GAMING_X870-PLUS_WIFI_EM_V2_WEB.pdfRead 16 October 2026Layout item 13 is the Clear CMOS header. The back panel has only the BIOS FlashBack button.

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 manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026The layout lists a Post Status Checker (PSC, section 2.14). It is four colour LEDs for CPU, DRAM, VGA and BOOT, not a two-digit display.

No1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026Special features list ASUS Q-LED with four status LEDs (CPU, DRAM, VGA, boot device). No Q-Code display is listed.3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/TUF_GAMING_X870-PLUS_WIFI/E25811_TUF_GAMING_X870-PLUS_WIFI_EM_V2_WEB.pdfRead 16 October 2026Layout item 18: Q-LEDs (CPU, DRAM, VGA and boot device). No two-digit display on the layout.

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 manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026Section 2.13 says the only smart switch is the BIOS Flashback button. The layout lists no power or reset button.

No1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026The internal connector and special features lists name no power or start button on the board.3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/TUF_GAMING_X870-PLUS_WIFI/E25811_TUF_GAMING_X870-PLUS_WIFI_EM_V2_WEB.pdfRead 16 October 2026The layout contents list 19 items and none is a power or start button.

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 manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026The block diagram shows one flash ROM. Dual BIOS is not stated.

No1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026BIOS is a single 256 Mb flash ROM. Dual BIOS is not stated.3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/TUF_GAMING_X870-PLUS_WIFI/E25811_TUF_GAMING_X870-PLUS_WIFI_EM_V2_WEB.pdfRead 16 October 2026Specifications summary: 256 Mb Flash ROM, UEFI AMI BIOS. Dual BIOS is not stated.

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

Not available

Yes1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026Special features 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 latch1Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026The install guides for all four M.2 sockets use a nut lock that is turned clockwise to lock a 2280 module in place without a screw. The heatsinks need a screwdriver and are not tool-free. The Wi-Fi antennas screw on. The manual names no PCIe release button.

Tool-free M.2 latch, PCIe slot release, Push-on antenna connector1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026ASUS Q-Design: M.2 Q-Latch, PCIe Slot Q-Release and Q-Antenna. LanOC says the M.2 heatsinks are screwed down.

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.

65°C3Measurementtech4gamers.com/asrock-b850-pro-rs-wifi-reviewRead 15 October 2026Chart: VRM temperature 65 C. Ryzen 9 9950X at stock, 24 C room temperature, 30 minutes of Cinebench 2024. The test bench also has an Arctic Liquid Freezer II 420 and an RTX 4090. The sensor and the CPU package power are not stated.

47.5°C11Reviewthefpsreview.com/2024/10/14/asus-tuf-gaming-x870-plus-wifi-motherboard-reviewRead 16 October 2026VRM Temperatures section of the review of 2024-10-14: Cinebench R23 for 20 minutes, VRM temperatures read with HWInfo64. The VRMs stayed between 41 and 47.5 C and the highest value is stored. The CPU was an AMD Ryzen 7 7700X with core temperatures of 85-86 C at 100% load. The review used BIOS 0805 and a pre-release BIOS before that. The sensor, the cooler, the CPU package power and the ambient temperature are not stated.

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.

105W3Measurementtech4gamers.com/asrock-b850-pro-rs-wifi-reviewRead 15 October 2026Chart: idle 105 W with the same Ryzen 9 9950X system. The text calls it power consumption and does not name the meter. The method is not stated, so this is read as whole system power.

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.

370W3Measurementtech4gamers.com/asrock-b850-pro-rs-wifi-reviewRead 15 October 2026Chart: load 370 W, and the text says full load, with the same system. The stress test, the meter and whether the graphics card was loaded are not stated.

Not available

In the box

1 of 1 differ

In the boxiItems as the maker lists them.

2 x Serial ATA (SATA) data cables, 2 x ASRock WiFi 2.4/5/6 GHz antennas, Quick Installation Guide, Regulatory Notice1Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026Section 1.1: 2 x Serial ATA (SATA) data cables (optional) and 2 x ASRock WiFi 2.4/5/6 GHz antennas (optional) for the WiFi model. Tech4Gamers adds a Quick Installation Guide and a Regulatory Notice.2Reviewtech4gamers.com/asrock-b850-pro-rs-wifi-reviewRead 15 October 2026Accessories: two SATA cables, two ASRock WiFi 2.4/5/6 GHz antennas, Quick Installation Guide and Regulatory Notice.

2 x SATA 6Gb/s cables, 1 x ASUS WiFi Q-Antenna, 2 x M.2 rubber packages, 1 x Screw package for M.2 SSD, 1 x TUF GAMING sticker, 1 x Quick start guide1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026Accessories list on the specification page, the same as the manual's package contents.3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/TUF_GAMING_X870-PLUS_WIFI/E25811_TUF_GAMING_X870-PLUS_WIFI_EM_V2_WEB.pdfRead 16 October 2026Package contents: 2 SATA cables, WiFi Q-Antenna, 2 M.2 rubber packages, M.2 screw package, TUF GAMING sticker, quick start guide.

Links

Not compared

Product page

www.asrock.com/mb/AMD/B850%20Pro%20RS%20WiFi/index.asp11Maker product pageasrock.com/mb/AMD/B850%20Pro%20RS%20WiFi/index.aspRead 15 October 2026The link comes from web search results for this model. asrock.com answers agents with a bot check, so the page was not read and its content is not used for any value.

www.asus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi2Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifiRead 16 October 2026

Spec sheet

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www.asus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspec1Maker product pageasus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x870-plus-wifi/techspecRead 16 October 2026

Manual

download.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdf1Owner's manualdownload.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdfRead 15 October 2026ASRock manual for B850 Pro RS WiFi and B850 Pro RS on download.asrock.com, 78 pages. The same file opens under the name B850 Pro RS.pdf. This record uses the WiFi parts only.

dlcdnets.asus.com/pub/ASUS/mb/SocketAM5/TUF_GAMING_X870-PLUS_WIFI/E25811_TUF_GAMING_X870-PLUS_WIFI_EM_V2_WEB.pdf3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/TUF_GAMING_X870-PLUS_WIFI/E25811_TUF_GAMING_X870-PLUS_WIFI_EM_V2_WEB.pdfRead 16 October 2026ASUS user's manual E25811, English edition, revised edition V2, 2025-02-06 on the ASUS support page.

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.

3years5Retailer pagearvutitark.ee/en/pc-components/motherboards/mb-asrock-amd-am5-b850-pro-rs-wifi-1425695Read 15 October 2026Warranty (months) 36. The market is Estonia.

3years6Retailer pageldlc.pro/fiche/PB00633568.htmlRead 16 October 2026Garantie commerciale: 3 ans constructeur. LDLC Pro is a French shop, so this is the French maker warranty.

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