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MSI PRO A620AM-B EVO vs MSI PRO B850M-A WIFI

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Product A: MSI

PRO A620AM-B EVO

55 of 78 known

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B

Product B: MSI

PRO B850M-A WIFI

63 of 78 known

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Only differences

AMSI PRO A620AM-B EVO

BMSI PRO B850M-A WIFI

General

1 of 9 differ

Series

PRO1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026The manual cover reads PRO Series Motherboard PRO A620AM-B EVO.

PRO1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Cover: PRO Series Motherboard, PRO B850M-A WIFI.

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

PRO A620AM-B EVO, 7E36-001R, 911-7E36-0013Spec databasegeizhals.de/msi-pro-a620am-b-evo-7e36-001r-a3650527.htmlRead 15 October 2026Manufacturer part number 7E36-001R. Shops give the same board as 911-7E36-001.4Retailer pagescan.co.uk/products/msi-pro-a620am-b-evo-amd-a620a-am5-ddr5-pcie-40-1x-m2-25gbe-usb-32-gen1-amd-expo-matxRead 15 October 2026Model number PRO A620AM-B EVO.7Spec databasepcpartpicker.com/product/9vh2FT/msi-pro-a620am-b-evo-micro-atx-am5-motherboard-pro-a620am-b-evoRead 15 October 2026Part numbers: PRO A620AM-B EVO, 7E36-001R, 911-7E36-001.

PRO B850M-A WIFI1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026The manual names only PRO B850M-A WIFI. The PRO B850M-A WIFI PZ back-connect board is a separate MSI model. No order code or regional model number was found.

GTIN / EAN

47113773972164Retailer pagescan.co.uk/products/msi-pro-a620am-b-evo-amd-a620a-am5-ddr5-pcie-40-1x-m2-25gbe-usb-32-gen1-amd-expo-matxRead 15 October 2026GTIN 4711377397216. Caseking and AWD-IT give the same EAN.6Retailer pageawd-it.co.uk/msi-pro-a620am-b-evo-micro-atx-amd-ryzen-ddr5-motherboard-socket-am5.htmlRead 15 October 2026EAN 4711377397216.

8241424254599Spec databasebuildcores.com/products/Motherboard/ys4ci1k5t/MSI-PRO-B850M-A-WIFIRead 14 October 2026UPC 824142425459, also shown as EAN 0824142425459. The PZ board has its own code.

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

Not available

6 January 20256Press articleclub386.com/msi-launches-mid-and-entry-motherboards-for-amds-am5-platformRead 14 October 2026Article of 2025-01-06 announces the Pro B850M-A WiFi with the MSI B850 lineup.

Status

Available3Spec databasegeizhals.de/msi-pro-a620am-b-evo-7e36-001r-a3650527.htmlRead 15 October 2026Listed with offers from several shops on 2026-10-15.4Retailer pagescan.co.uk/products/msi-pro-a620am-b-evo-amd-a620a-am5-ddr5-pcie-40-1x-m2-25gbe-usb-32-gen1-amd-expo-matxRead 15 October 2026On sale with stock listed on 2026-10-15. Its memory row reads DDR5-7600 (OC), which no other source repeats and is not used.

Available8Spec databasegeizhals.de/msi-pro-b850m-a-wifi-a3383558.htmlRead 14 October 2026Listed with offers on geizhals.eu on 2026-10-14. The base page showed no offers in one snapshot. BuildCores shows it in stock at Newegg and Walmart.9Spec databasebuildcores.com/products/Motherboard/ys4ci1k5t/MSI-PRO-B850M-A-WIFIRead 14 October 2026Shows Newegg at 168.99 USD and Walmart at 172.99 USD in stock on 2026-10-14.

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

Not available

Not available

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

Not available

Not available

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

Not available

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.

Mainstream1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026MSI PRO is a mainstream line, not gaming, creator or workstation.

Mainstream2Maker spec sheet (PDF)storage-asset.msi.com/datasheet/mb/in/PRO-B850M-A-WIFI.pdfRead 14 October 2026The datasheet cover carries the tagline Business and Elegance, and the board sits in MSI's PRO series. MSI names no gaming or creator use.

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

Not available

Not available

Platform

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

AM51Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Specifications chapter: processor socket AM5.

AM51Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 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 A620A1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Specifications chapter: AMD A620A chipset.

AMD B8501Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 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 Series1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Specifications chapter: supports AMD Ryzen 9000, 8000 and 7000 Series desktop processors, processor socket AM5. The manual points to msi.com for the newest support status. Read on 2026-10-15.

AMD Ryzen 9000 Series, AMD Ryzen 8000 Series, AMD Ryzen 7000 Series1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications, CPU row: AMD Ryzen 9000/8000/7000 Series Desktop Processors, socket AM5. The manual points to msi.com for the newest support list. Read on 2026-10-14.

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

No8Press articlenoobfeed.com/hardware/amd-am5-chipsets-x870-b850-b840-a620-comparisonRead 15 October 2026The article says CPU overclocking is available on all AM5 chipsets except B840 and A620, and that A620 lacks PBO. It does not name A620A. The MSI manual lists memory overclocking and AMD EXPO only. Memory overclocking alone does not count.

Yes1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Page 29 says the board is designed to support overclocking. The Special Features list names Core Boost and Memory Boost. The B850 chipset allows CPU overclocking. AMD's chipset page could not be opened on 2026-10-14.

Board

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

Micro-ATX1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Specifications chapter: m-ATX form factor, 8.5 in. x 9.6 in. (218 mm x 244 mm).

Micro-ATX1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications, Form Factor row: mATX, 9.6 in. x 9.6 in. (244 mm x 244 mm).

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.

Width218Height244mm(8.6 × 9.6 in)1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Specifications chapter: 218 mm x 244 mm. Retailers give 218 x 243.84 mm, which is 9.6 in exactly.

Width244Height244mm(9.6 × 9.6 in)1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications: 244 mm x 244 mm. Guru3D, Netcodex and the MSI Taiwan store give 243.84 mm, the exact conversion of 9.6 in.

PCB layersiCopper layers in the circuit board as published.

Not available

63Maker product pagemy-store.msi.com/products/msi-pro-b850m-a-wifi-matx-motherboardRead 14 October 2026Product details: 6-layer PCB made by 2oz thickened copper and server-grade level material.4Maker product pagetw-store.msi.com/products/pro-b850m-a-wifiRead 14 October 2026The Chinese text says a 6-layer server-grade PCB with 2oz copper. One search result summary of MSI's global page mentioned 8 layers, which no maker page or document confirmed.6Press articleclub386.com/msi-launches-mid-and-entry-motherboards-for-amds-am5-platformRead 14 October 2026Six-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 manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026The Overview of Components pages show the usual front-side connectors. PCPartPicker also says no back-connect connectors.7Spec databasepcpartpicker.com/product/9vh2FT/msi-pro-a620am-b-evo-micro-atx-am5-motherboard-pro-a620am-b-evoRead 15 October 2026Uses Back-Connect Connectors: No.

No1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026The component overview on page 27 shows the usual front-side power, fan and front-panel connectors. The back-connect board is the separate PRO B850M-A WIFI PZ.

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.

No1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026The LED Features list has only the RGB and ARGB headers, 4 EZ Debug LEDs and 1 EZ Memory Detection LED. No on-board lighting is named.

No1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications, LED Features: 4x EZ Debug LED, 1x EZ Memory Detection LED and the RGB and ARGB headers. The list names no lighting on the board itself. BuildCores shows Lighting: None.9Spec databasebuildcores.com/products/Motherboard/ys4ci1k5t/MSI-PRO-B850M-A-WIFIRead 14 October 2026Lighting: none listed. The headers are for external devices.

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.

Not available

8+2+13Maker product pagemy-store.msi.com/products/msi-pro-b850m-a-wifi-matx-motherboardRead 14 October 2026Product details: Direct 8+2+1 Power System 60A SPS, 8+4-pin CPU power connectors.4Maker product pagetw-store.msi.com/products/pro-b850m-a-wifiRead 14 October 2026Text names an 8+2+1 Duet Rail power system with dual 8+4-pin CPU power connectors.6Press articleclub386.com/msi-launches-mid-and-entry-motherboards-for-amds-am5-platformRead 14 October 2026MSI's launch text through Club386: 8+2+1 phases rated at 60A.7Press articleguru3d.com/story/msi-pro-b850ma-wifi-microatx-motherboard-with-wifi-7-and-5-gigabit-lanRead 14 October 20268+2+1 phase design with 60A smart power stages.10Spec databasemaxmybuild.com/motherboards/msi-pro-b850m-a-wifiRead 14 October 20268+2+1 power stage layout, 60A SPS.

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.

63Spec databasegeizhals.de/msi-pro-a620am-b-evo-7e36-001r-a3650527.htmlRead 15 October 2026VRM row: 6+2 with 6x 50 A SM4377 high-side and 12x SM4503 low-side MOSFETs for VCORE, so 6 stages. Geizhals counts 5 real CPU phases (3+2) and 8 virtual (2x3+2). MSI publishes no layout. One search excerpt of an Amazon listing says 6+2+1, but that listing also claims two M.2 slots and two USB-C ports, which the manual does not show, so it was not used and the layout string is left out.

88Spec databasegeizhals.de/msi-pro-b850m-a-wifi-a3383558.htmlRead 14 October 2026VRM row: 8+2+1, 8x 60 A MP87661 smart power stages for VCORE, 2 for SOC and 1 for misc.

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.

Not available

60A3Maker product pagemy-store.msi.com/products/msi-pro-b850m-a-wifi-matx-motherboardRead 14 October 2026Direct 8+2+1 Power System 60A SPS.6Press articleclub386.com/msi-launches-mid-and-entry-motherboards-for-amds-am5-platformRead 14 October 20268+2+1 phases rated at 60A.7Press articleguru3d.com/story/msi-pro-b850ma-wifi-microatx-motherboard-with-wifi-7-and-5-gigabit-lanRead 14 October 202660A smart power stages.

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.

Richtek RT3674AE3Spec databasegeizhals.de/msi-pro-a620am-b-evo-7e36-001r-a3650527.htmlRead 15 October 2026PWM controller row: RT3674AE (max 6 phases). RT3674 is a Richtek part. No review of this board names a controller, and this is one aggregator.

Richtek RT3678BE8Spec databasegeizhals.de/msi-pro-b850m-a-wifi-a3383558.htmlRead 14 October 2026PWM controller row: RT3678BE (max 10 phases) and RT3672EE (max 2 phases). Geizhals names no maker. The RT3678 family is Richtek's. The Vcore controller is stored. No review names a controller, and this is one aggregator.

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

8 pin1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Specifications chapter: 1x 24-pin ATX main power connector and 1x 8-pin +12V power connector (CPU_PWR1).

8+4 pin1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications, Power Connectors: 1x 24-pin ATX, 1x 8-pin +12V, 1x 4-pin +12V and 1x 8-pin PCIe power connector.3Maker product pagemy-store.msi.com/products/msi-pro-b850m-a-wifi-matx-motherboardRead 14 October 20268+4-pin CPU power 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 manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026The power connector list has only the 24-pin and 8-pin connectors.

Yes1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications and page 41: PCIE_PWR1, an 8-pin PCIe power connector. The Special Features list names it Supplemental PCIe Power Connector.

Memory

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Memory type

DDR51Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Specifications chapter: 2x DDR5 memory slots, supporting up to 128GB, dual-channel mode. The manual names AMD POR speed, JEDEC speed, memory overclocking and AMD EXPO but gives no MT/s figures.

DDR51Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications, Memory row: 4x DDR5 memory slots, supporting up to 256GB, dual channel. The slots have a single latch.

Memory slotsiDIMM slots on the board.

21Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026

41Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 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.

128GB1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026

256GB1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026

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.

6,800MT/s3Spec databasegeizhals.de/msi-pro-a620am-b-evo-7e36-001r-a3650527.htmlRead 15 October 2026Data rate: DDR5-5200 (Ryzen 7000/8000G), DDR5-5600 (Ryzen 9000), max. DDR5-6800 OC.5Retailer paget-labz.com/product/msi-pro-a620am-b-evo-am5-m-atx-motherboardRead 15 October 2026Copy of MSI's text: DDR5 6800-5600 (OC) MT/s and 5600-4800 (JEDEC) MT/s. 1DPC 1R supports up to 6800+ MT/s and 1DPC 2R up to 6000+ MT/s. No CPU family is named. Ryzen 9000 is the newest family the board is sold for. 6800 is stored for one module per channel. The Amazon title says DDR5 Memory Boost (6800+ MT/s OC) and Geizhals says max. DDR5-6800 OC.

8,200MT/s2Maker spec sheet (PDF)storage-asset.msi.com/datasheet/mb/in/PRO-B850M-A-WIFI.pdfRead 14 October 2026Memory Support: 4 DIMMs, Dual Channel DDR5 - 8200+ MT/s (OC). The maker names no CPU family and no module setup for the figure. The MSI Malaysia store and the Taiwan store say the same. The JEDEC range is 5600 to 4800 MT/s.

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

No1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Specifications chapter: supports non-ECC, un-buffered memory.

No1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications: Supports Non-ECC, Un-buffered memory.

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

No1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Specifications chapter: supports CUDIMM, clock driver bypass mode only. CUDIMM support and POR boot frequency may vary by CPU series.

No1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications: Supports CUDIMM, Clock Driver bypass mode only.

Expansion slots

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

AMSI PRO A620AM-B EVO

Physical slot	Electrical lanes	PCIe generation	Connected to	Count
PCIe x16	16	4	CPU	1
PCIe x1	1	3	Chipset	1

Source1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Specifications chapter: PCI_E1 is a PCIe x16 slot from the CPU, up to PCIe 4.0 x16 for Ryzen 9000 and 7000 (x8 for Ryzen 8700, 8600 and 8400, x4 for Ryzen 8500 and 8300). PCI_E2 is a PCIe x1 slot from the A620A chipset, up to PCIe 3.0 x1.

BMSI PRO B850M-A WIFI

Physical slot	Electrical lanes	PCIe generation	Connected to	Count
PCIe x16	16	5	CPU	1
PCIe x16	4	4	Chipset	1
PCIe x1	1	3	Chipset	1

Source1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications and page 32: 2x PCIe x16 slots and 1x PCIe x1 slot. PCI_E1 is from the CPU, PCIe 5.0 x16 with Ryzen 9000 and 7000. It runs PCIe 4.0 x8 with Ryzen 8700, 8600 and 8400, and PCIe 4.0 x4 with Ryzen 8500 and 8300. PCI_E3 is a x16 slot from the B850 chipset, up to PCIe 4.0 x4. PCI_E2 is the x1 slot from the chipset, up to PCIe 3.0 x1. Guru3D also writes the second slot as PCIe 4.0 x4 in x16 physical size.

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

1=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.

4=CalculatedFrom Expansion slots

5=CalculatedFrom Expansion slots

Storage

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

AMSI PRO A620AM-B EVO

Slot	PCIe generation	PCIe lanes	Connected to	Longest drive	Takes SATA drives	Heatsink
M2_1	4	4	CPU	M.2 2280	No	No

Source1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Specifications chapter: 1x M.2 slot (Key M), M2_1 from the CPU, up to PCIe 4.0 x4 for Ryzen 9000, 8700, 8600, 8400 and 7000 (x2 for Ryzen 8500 and 8300), 2260 and 2280 devices. The list shows no SATA mode. The M2_1 chapter shows an EZ M.2 Clip II and no heatsink. PCPartPicker says two M.2 slots, which the manual and its board diagram do not show.

BMSI PRO B850M-A WIFI

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

Source1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications and pages 33 to 37, Ryzen 9000 values. M2_1 is from the CPU, up to PCIe 5.0 x4 (PCIe 4.0 x4 with Ryzen 8000), 2260 and 2280 drives, under the screwless EZ M.2 Shield Frozr II heatsink. M2_2 is from the CPU, up to PCIe 4.0 x4 (PCIe 4.0 x2 with Ryzen 8500 and 8300), 2260 and 2280 drives. The M2_2 install steps show a clip and no heatsink. MaxMyBuild and Geizhals agree that only one M.2 slot has a heatsink. No slot lists an M.2 SATA mode, so sata is false. The Wi-Fi module sits in a separate M.2 Key-E slot.10Spec databasemaxmybuild.com/motherboards/msi-pro-b850m-a-wifiRead 14 October 2026M.2 heatsinks: slot 1 only.

M.2 slots

1=CalculatedFrom M.2 storage slots

2=CalculatedFrom M.2 storage slots

PCIe 5.0 M.2 slots

0=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.

21Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Specifications chapter: 2x SATA 6Gb/s ports from the A620A chipset.

41Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications: 4x SATA 6Gb/s ports from the B850 chipset.

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.

AMSI PRO A620AM-B EVO

Type	Version	Count	Max link rate (Gbps)
HDMI	HDMI 2.1	1	Not available
VGA	Not available	1	Not available
PS/2	Not available	2	Not available
USB-A	USB 3.2 Gen 1	4	5
USB-A	USB 2.0	2	0.48
Ethernet (RJ45)	Not available	1	2.5
3.5 mm audio	Not available	3	Not available

Source1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Specifications chapter and Back Panel Connectors: 1 HDMI (HDMI 2.1, 4K 60Hz, processors with graphics only), 1 VGA, 1 PS/2 mouse and 1 PS/2 keyboard port, 2 USB 5Gbps Type-A from the CPU, 2 USB 5Gbps Type-A from the chipset, 1 USB 2.0 Type-A from the CPU, 1 USB 2.0 Type-A from the chipset, 1 2.5Gbps LAN (RJ45) and 3 audio jacks. USB 5Gbps is stored as USB 3.2 Gen 1, as Scan and Geizhals write it.

BMSI PRO B850M-A WIFI

Type	Version	Count	Max link rate (Gbps)
USB-C	USB 3.2 Gen 2	2	10
USB-A	USB 3.2 Gen 2	3	10
USB-A	USB 3.2 Gen 1	3	5
HDMI	HDMI 2.1	1	Not available
DisplayPort	DisplayPort 1.4	1	Not available
Ethernet (RJ45)	Not available	1	5
3.5 mm audio	Not available	3	Not available

Source1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications and pages 19 and 23: 3x USB 10Gbps Type-A (CPU), 2x USB 10Gbps Type-C (B850 chipset), 3x USB 5Gbps Type-A (B850 chipset), 1x DisplayPort 1.4, 1x HDMI 2.1, 1x 5G LAN (RJ45) and 3 audio jacks (line-in, line-out, mic-in). The MSI datasheet agrees. MSI's speed names are stored as USB-IF names: 5Gbps as USB 3.2 Gen 1 and 10Gbps as Gen 2. DisplayPort and HDMI work only with a CPU that has integrated graphics, 4K 60 Hz. The manual gives no USB power output or DisplayPort alt mode figures. The two Wi-Fi antenna connectors and the Clear CMOS and Flash BIOS buttons are not ports.

Rear USB ports

6=CalculatedFrom Rear ports

8=CalculatedFrom Rear ports

Rear USB-C portsiIncludes Thunderbolt and USB4 ports.

0=CalculatedFrom Rear ports

2=CalculatedFrom Rear ports

Fastest rear USB port

5Gbps=CalculatedFrom Rear ports

10Gbps=CalculatedFrom Rear ports

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

Not available

Not available

Internal connectors

4 of 5 differ

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

AMSI PRO A620AM-B EVO

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

Source1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Specifications chapter: 1x USB 5Gbps Type-C connector (JUSBC1), 1x USB 5Gbps Type-A connector (JUSB3, 2 additional ports) and 2x USB 2.0 connectors (JUSB1~2, 4 additional ports).

BMSI PRO B850M-A 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

Source1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications and pages 43 and 44: JUSBC1 is 1x USB 10Gbps Type-C front port. JUSB3 is one 5Gbps connector for 2 ports. JUSB1 and JUSB2 are two USB 2.0 connectors for 4 ports.

Front USB-C header speed

5Gbps=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.

31Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Specifications chapter: 1x 4-pin CPU fan connector and 2x 4-pin system fan connectors.

51Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications: 1x 4-pin CPU fan, 1x 4-pin water-pump/system fan and 3x 4-pin system fan connectors. The 7-pin EZ Conn connector carries a fan and ARGB together and is not counted.

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

11Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Specifications chapter: 1x 3-pin ARGB_V2 LED connector (JARGB_V2_1).

31Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications: 3x 3-pin A-RAINBOW V2 (ARGB Gen2) LED connectors.

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

11Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Specifications chapter: 1x 4-pin RGB LED connector (JRGB1).

11Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications: 1x 4-pin RGB LED connector (JRGB1).

Networking

7 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 RTL81253Spec databasegeizhals.de/msi-pro-a620am-b-evo-7e36-001r-a3650527.htmlRead 15 October 2026LAN chip: Realtek RTL8125BG, 2.5GBase-T. The suffix BG is left out. The manual says Realtek 8125 2.5Gbps LAN controller.

Realtek RTL81261Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications: 1x Realtek 8126 5Gbps LAN controller. Retailer listings and Geizhals add the suffix VB, which is left out.

Ethernet ports

1=CalculatedFrom Rear ports

1=CalculatedFrom Rear ports

Ethernet speediFastest Ethernet port.

2.5Gbps=CalculatedFrom Rear ports

5Gbps=CalculatedFrom Rear ports

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

No1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026The Specifications chapter lists no wireless module. Geizhals and LDLC say no Wi-Fi.

Yes1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications: the wireless module is pre-installed in the M.2 (Key-E) slot. This applies to PRO B850M-A WIFI only.

Wi-Fi standard

Not available

Wi-Fi 71Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications: 802.11 a/b/g/n/ac/ax/be.

Wi-Fi bandsiBands the installed module supports.

Not available

2.4 GHz, 5 GHz, 6 GHz1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications: 2.4GHz/5GHz/6GHz. 6 GHz may depend on each country's regulations.

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

160MHz1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications: MU-MIMO TX/RX, 2.4GHz/5GHz/6GHz (160MHz) up to 2.9Gbps.

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

Not available

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

Not available

5.41Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications: Bluetooth 5.4, MLO, 4KQAM. The version may be updated by the Wi-Fi chipset vendor.

Audio

0 of 2 differ

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

Realtek ALC8971Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Specifications chapter: Realtek ALC897 codec, 7.1-channel High Definition Audio.

Realtek ALC8971Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications, Audio row: Realtek ALC897 Codec, 7.1-channel High Definition Audio. Geizhals and Netcodex say the same.

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

5 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.

No1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026The back panel list has no BIOS flash button.

Yes1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications and page 23: Flash BIOS button on the rear panel, with a Flash BIOS port (USB 10Gbps Type-A).

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 manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Specifications chapter: 1x Clear CMOS jumper (JBAT1). The back panel list has no button.

Yes1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications and page 23: Clear CMOS button on the rear panel. JBAT1 is a second jumper.

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

No1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026LED Features: 4x EZ Debug LED and 1x EZ Memory Detection LED. These are status LEDs, not a two-digit display.

No1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications, LED Features: 4x EZ Debug LED and 1x EZ Memory Detection LED. They are single status LEDs and the manual lists no two-digit display.

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

No1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026The component overview lists the front panel connectors JFP1 and JFP2 and no power or reset button on the board.

Not available

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

No1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Specifications chapter: 1x 512 Mb flash. Dual BIOS is not stated.

No1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Specifications, BIOS Features: 1x 256 Mb flash. Dual BIOS is not stated.

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

No1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Package Contents: 1x IO Shielding, so the shield is loose.

Yes1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Special Features, EZ DIY: Pre-installed 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 manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Package Contents and the M2_1 chapter: EZ M.2 Clip II holds the SSD without a screw and a remover tool is included. The manual names no PCIe release, tool-free M.2 heatsink or push-on antenna connector.

Tool-free M.2 latch, Tool-free M.2 heatsink, PCIe slot release1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Special Features, EZ DIY: EZ M.2 Shield Frozr II (screwless M2_1 heatsink, pages 34 to 36), EZ M.2 Clip II (locks the SSD without a screw) and EZ PCIe Clip II (release for the graphics card). The Wi-Fi antenna cables are screwed on (page 26), so antenna_connector is not stored.

Measured

None of 3 known

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.

Not available

Not available

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

Not available

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.

Not available

Not available

In the box

1 of 1 differ

In the boxiItems as the maker lists them.

1x Quick installation guide, 1x European Union Regulatory Notices, 1x SATA cable, 1x IO Shielding, 1x EZ M.2 Clip II, 1x EZ M.2 Clip II Remover1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026Package Contents. The motherboard itself is not listed here.

1x Motherboard, 1x Quick installation guide, 1x European Union Regulatory Notices, 1x SATA cable, 1 x 1 to 2 EZ Conn-Cable (V1), 1x EZ Wi-Fi Antenna, 2x EZ M.2 Clip II, 1x EZ M.2 Clip II Remover1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026Package Contents, page 22.

Links

Not compared

Product page

www.msi.com/Motherboard/PRO-A620AM-B-EVO2Maker product pagemsi.com/Motherboard/PRO-A620AM-B-EVORead 15 October 2026The URL comes from the job evidence and search results. msi.com blocks agents, so the page was not opened. No spec sheet PDF could be read: the MSI datasheet server returned access denied and no MSI e-shop feed lists the board.

www.msi.com/Motherboard/PRO-B850M-A-WIFI5Maker product pagemsi.com/Motherboard/PRO-B850M-A-WIFIRead 14 October 2026The URL comes from the job evidence and search results. msi.com blocks agents, so the page was not opened. Specifications were read from the user guide, the datasheet and MSI's regional stores.

Spec sheet

Not available

storage-asset.msi.com/datasheet/mb/in/PRO-B850M-A-WIFI.pdf2Maker spec sheet (PDF)storage-asset.msi.com/datasheet/mb/in/PRO-B850M-A-WIFI.pdfRead 14 October 2026One-page MSI datasheet for PRO B850M-A WIFI, generated 2025-10-31, on MSI's datasheet server.

Manual

gzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdf1Owner's manualgzhls.at/blob/ldb/c/6/e/6/5208618ab6fcd187518aeea214f1474005fc.pdfRead 15 October 2026MSI User Guide for PRO A620AM-B EVO (59 pages), revision history Version 1.0, 2025/08, first release. It is hosted by Geizhals. A copy on trovaprezzi.it has the same text. msi.com blocks agents, so the maker's own copy was not opened.

static.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdf1Owner's manualstatic.buildcores.com/part-attachments/6ca91b70-bec1-4089-823a-42e63ffd6950_PROB850M-AWIFI_PROB850M-A_English.pdfRead 14 October 2026MSI User Guide for PRO B850M-A WIFI (66 pages), hosted by buildcores.com. msi.com blocks agents, so the maker's own copy was not opened.

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

Not available

Not available

Warranty

0 of 1 differ

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.

3years3Spec databasegeizhals.de/msi-pro-a620am-b-evo-7e36-001r-a3650527.htmlRead 15 October 2026Garantie 3 Jahre. The market is Germany.5Retailer paget-labz.com/product/msi-pro-a620am-b-evo-am5-m-atx-motherboardRead 15 October 2026Warranty 36 months. The market is Pakistan.

3years3Maker product pagemy-store.msi.com/products/msi-pro-b850m-a-wifi-matx-motherboardRead 14 October 2026MSI Malaysia store: 3 years limited warranty. Geizhals says 3 years too.8Spec databasegeizhals.de/msi-pro-b850m-a-wifi-a3383558.htmlRead 14 October 2026Warranty 3 Jahre.

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