MOTHERBOARDS · YOUR NEXT FACE-OFF

ASUS ROG STRIX B550-A GAMING vs MSI B550M PRO-VDH WIFI

Real specs. Clear sources.Exact models · UK & US buying links

Compared products

YOUR FIRST CHOICE

ASUS ROG STRIX B550-A GAMING

UK manufacturer specification · ROG STRIX B550-A GAMING

Full product profile Official image

Exact model & source notes

ROG STRIX B550-A GAMING motherboard, identified in the ASUS UK catalogue. Specifications below retain the manufacturer’s configuration and interface conditions.

Specifications checked 17 Oct 2026.

Amazon links open search results. Check the exact variant, current price and availability with the retailer.

Manufacturer specifications

WHICH SUITS YOU?

Choose the ASUS ROG STRIX B550-A GAMING for

An ATX board

Choose the MSI B550M PRO-VDH WIFI for

A Micro-ATX board
Built-in Wi-Fi

Built from verified specifications that differ. Not a rating or a recommendation.

See the 5 verified differences

THE CONTENDER

MSI B550M PRO-VDH WIFI

AM4 · Micro-ATX · DDR4 · board-only configuration · MSI global specification

Full product profile Official image

Exact model & source notes

A Micro-ATX AM4 motherboard with AMD B550: four DDR4 slots rated up to DDR4-4400+ (OC), a PCIe 4.0 x16 graphics slot, two M.2 slots (one PCIe 4.0 x4) and Wi-Fi AC with Bluetooth 4.2.

Specifications checked 21 Sept 2026.

Amazon links open search results. Check the exact variant, current price and availability with the retailer.

Manufacturer specifications

ASUS ROG STRIX B550-A GAMING UK & US retailers

UK & US price history: no verified listing yet

MSI B550M PRO-VDH WIFI UK & US retailers

UK & US price history: no verified listing yet

Search links open retailer results, not a matched listing; eBay listings are checked daily. As an Amazon Associate I earn from qualifying purchases. As an eBay Partner, we may be compensated if you make a purchase.

THE DIFFERENCES, MADE VISIBLE

Visual facts

Differences first. Select a topic for its graphic, sources and conditions.

How to read this comparison

Manufacturer facts for the exact models shown. Not a quality rating or a test result.
“Different” means the known values differ, not that one is better.
Missing or conflicting evidence is marked and never counts as a difference. Source chips hold each fact’s sources and conditions.

SPECIFICATIONS SIDE BY SIDE5 topics

SELECTED TOPIC

01 / 05

Form factor and dimensions

Check the exact configuration and source conditions for your use.

ASUS ROG STRIX B550-A GAMINGATX Form Factor 12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )

Manufacturer specification

Source 1

MSI B550M PRO-VDH WIFIMicro-ATX; 244 × 244 mm

Manufacturer specification · Board dimensions, not retail packaging. Check case mounting positions, clearance and cable routing.

Source 1

Explore the full specifications

Plan the complete platform. Check the exact CPU-support list, required BIOS and memory validation before buying. PCIe generations and lane allocations can change with the processor. A socket match or slot count is not a guarantee that every component works together at its highest advertised setting.

WHAT CHANGES BETWEEN THEM?

Key differences

Full specifications ↓

5 verified differences, most decision-relevant first. All are also drawn in Visual facts above. Missing information stays separate.

Form factor and dimensions

In Visual facts

ASUS ROG STRIX B550-A GAMINGATX Form Factor 12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )

MSI B550M PRO-VDH WIFIMicro-ATX; 244 × 244 mm

Sources

ASUS ROG STRIX B550-A GAMING

Manufacturer specification

ASUS ROG STRIX B550-A GAMING — official UK technical specifications

MSI B550M PRO-VDH WIFI

Manufacturer specification · Board dimensions, not retail packaging. Check case mounting positions, clearance and cable routing.

MSI B550M PRO-VDH WIFI — manufacturer specifications

Check the exact configuration and source conditions for your use.

Memory type, slots and limit

In Visual facts

ASUS ROG STRIX B550-A GAMINGAMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors 4 x DIMM, Max. 128GB, DDR4 4600(O.C)/4400(O.C)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3600(O.C.)/3466(O.C.)/3200/3000/2800/2666/2400/2133 MHz Un-buffered Memory AMD RyzenTM 4000 G-Series Processors 4 x DIMM, Max. 128GB, DDR4 5100(O.C)/4800(O.C.)/4600(O.C)/4400(O.C)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3600(O.C.)/3466(O.C.)/3200/3000/2800/2666/2400/2133 MHz Un-buffered Memory Dual Channel Memory Architecture OptiMem II ECC Memory (ECC mode) support varies by CPU. * Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).

MSI B550M PRO-VDH WIFI4 DDR4 DIMM slots; dual channel; up to 128 GB; up to DDR4-4400+ (OC); A-XMP; non-ECC and ECC unbuffered

Sources

ASUS ROG STRIX B550-A GAMING

Manufacturer specification

ASUS ROG STRIX B550-A GAMING — official UK technical specifications

MSI B550M PRO-VDH WIFI

The overclocked speed is MSI's 1DPC 1R maximum; MSI lists 1DPC 2R up to 3733, 2DPC 1R up to 3866 and 2DPC 2R up to 3466 MHz. JEDEC speeds run up to DDR4-3200. · Manufacturer specification · CPU, BIOS and validated DIMM population determine supported capacity and speeds. DDR4 and DDR5 are not interchangeable.

MSI B550M PRO-VDH WIFI — manufacturer specifications

Check the exact configuration and source conditions for your use.

Storage interfaces and restrictions

In Visual facts

ASUS ROG STRIX B550-A GAMINGTotal supports 2 x M.2 slot(s) and 6 x SATA 6Gb/s ports AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors: 1 x M.2_1 socket 3, with M key, type 2242/2260/2280/22110 storage devices support(SATA & PCIe 4.0 x4 mode) AMD RyzenTM 4000 G-Series Processor: 1 x M.2_1 socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode)* AMD B550 Chipset: 1 x M.2_2 socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode) 6 x SATA 6Gb/s port(s), Support Raid 0, 1, 10

MSI B550M PRO-VDH WIFI1 × M.2 PCIe 4.0 x4; 1 × M.2 PCIe 3.0 x4; M2_1 also supports SATA; 4 × SATA 6 Gb/s

Sources

ASUS ROG STRIX B550-A GAMING

Manufacturer specification

ASUS ROG STRIX B550-A GAMING — official UK technical specifications

MSI B550M PRO-VDH WIFI

M2_1 connects to the CPU; M2_2 connects to the B550 chipset. · Manufacturer specification · M2_1 runs at PCIe 4.0 or 3.0 depending on the installed processor. Both M.2 slots accept 2242/2260/2280 drives.

MSI B550M PRO-VDH WIFI — manufacturer specifications

Check the exact configuration and source conditions for your use.

Network interfaces and requirements

In Visual facts

ASUS ROG STRIX B550-A GAMINGIntel® I225-V 2.5Gb Ethernet ASUS LANGuard

MSI B550M PRO-VDH WIFIRealtek 8111HN 1 Gb Ethernet; Wi-Fi AC (802.11ac, 2.4/5 GHz); Bluetooth 4.2

Sources

ASUS ROG STRIX B550-A GAMING

Manufacturer specification

ASUS ROG STRIX B550-A GAMING — official UK technical specifications

MSI B550M PRO-VDH WIFI

Manufacturer specification · MSI lists a maximum Wi-Fi link rate of 433 Mb/s; this is not measured throughput. Only the 2.4 and 5 GHz bands are listed.

MSI B550M PRO-VDH WIFI — manufacturer specifications

Check the exact configuration and source conditions for your use.

Audio interfaces

In Visual facts

ASUS ROG STRIX B550-A GAMINGROG SupremeFX 8-Channel High Definition Audio CODEC S1220A - Dual OP Amplifiers - Impedance sense for front and rear headphone outputs - Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking - High quality 120 dB SNR stereo playback output and 113 dB SNR recording input - Supports up to 32-Bit/192kHz playback * Audio Feature: - SupremeFX Shielding™ Technology - Gold-plated jacks - Optical S/PDIF in port(s) at back panel - Audio Shielding - Premium Japanese audio capacitors - Audio Cover * Due to limitations in HDA bandwidth, 32-Bit/192kHz is not supported for 8-Channel audio.

MSI B550M PRO-VDH WIFIRealtek ALC892 or ALC897 codec; 7.1-channel

Sources

ASUS ROG STRIX B550-A GAMING

Manufacturer specification

ASUS ROG STRIX B550-A GAMING — official UK technical specifications

MSI B550M PRO-VDH WIFI

Manufacturer specification · Manufacturer-listed onboard audio hardware, not a measured sound-quality result. Where alternatives are listed, no particular unseen controller revision is promised.

MSI B550M PRO-VDH WIFI — manufacturer specifications

Check the exact configuration and source conditions for your use.

Configuration & compatibility details (1)

CPU support and BIOS requirements

ASUS ROG STRIX B550-A GAMINGAMD AM4 Socket for AMD Ryzen™ 5000 Series/ 4000 G-Series/ 3000 Series Desktop Processors * Refer to www.asus.com for CPU support list BIOS: 256 Mb Flash ROM, UEFI AMI BIOS

MSI B550M PRO-VDH WIFIAMD Ryzen 5000 / 3000 Series (except Ryzen 5 3400G and Ryzen 3 3200G) and 4000 G-Series

Sources

ASUS ROG STRIX B550-A GAMING

Manufacturer specification · Exact CPU support and BIOS revision depend on the processor and the current ASUS CPU support list; the family statement is not a guarantee for every processor.

ASUS ROG STRIX B550-A GAMING — official UK technical specifications

MSI B550M PRO-VDH WIFI

Manufacturer specification · Check MSI's exact CPU support list and its required BIOS. Family support does not confirm the firmware installed on a retail board.

MSI B550M PRO-VDH WIFI — manufacturer specifications

These descriptions or measurements differ. Wording alone does not establish a different capability; check the exact configuration.

Missing or non-comparable evidence (18)

DIMM slots

ASUS ROG STRIX B550-A GAMINGNot verified

MSI B550M PRO-VDH WIFI4

Sources

ASUS ROG STRIX B550-A GAMING

No source recorded for this side.

MSI B550M PRO-VDH WIFI

Manufacturer specification · Physical DDR4 module positions, not included modules. Consult the board manual for population order and compatible capacities.

MSI B550M PRO-VDH WIFI — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Maximum listed memory

ASUS ROG STRIX B550-A GAMINGNot verified

MSI B550M PRO-VDH WIFI128 GB

Sources

ASUS ROG STRIX B550-A GAMING

No source recorded for this side.

MSI B550M PRO-VDH WIFI

Manufacturer specification · Manufacturer capacity ceiling for this exact board, not included memory or a performance measurement. CPU, BIOS, DIMM population and the validated-module list determine support. DDR4 slots require DDR4 modules; DDR4 and DDR5 are not interchangeable.

MSI B550M PRO-VDH WIFI — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Onboard M.2 storage slots

ASUS ROG STRIX B550-A GAMINGNot verified

MSI B550M PRO-VDH WIFI2

Sources

ASUS ROG STRIX B550-A GAMING

No source recorded for this side.

MSI B550M PRO-VDH WIFI

Manufacturer specification · Onboard M.2 storage positions only. M.2 PCIe generation depends on the CPU. Both slots accept 2242/2260/2280 drives.

MSI B550M PRO-VDH WIFI — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Secondary expansion slots

ASUS ROG STRIX B550-A GAMINGNot verified

MSI B550M PRO-VDH WIFI2 PCIe 3.0 x1 slots

Sources

ASUS ROG STRIX B550-A GAMING

No source recorded for this side.

MSI B550M PRO-VDH WIFI

Manufacturer specification · Physical connector length and electrical lane count differ.

MSI B550M PRO-VDH WIFI — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Rear Flash BIOS button

ASUS ROG STRIX B550-A GAMINGNot verified

MSI B550M PRO-VDH WIFIYes

Sources

ASUS ROG STRIX B550-A GAMING

No source recorded for this side.

MSI B550M PRO-VDH WIFI

Manufacturer specification · Recovery procedure and USB preparation require the manual.

MSI B550M PRO-VDH WIFI — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Expansion slots and restrictions

ASUS ROG STRIX B550-A GAMINGAMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors 1 x PCIe 4.0 x16 (x16 mode) AMD RyzenTM 4000 G-Series Processor 1 x PCIe 3.0 x16 (x16 mode) AMD B550 Chipset 1 x PCIe 3.0 x16 (x4 mode) * 3 x PCIe 3.0 x1

MSI B550M PRO-VDH WIFINot verified

Sources

ASUS ROG STRIX B550-A GAMING

Manufacturer specification

ASUS ROG STRIX B550-A GAMING — official UK technical specifications

MSI B550M PRO-VDH WIFI

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Cooling headers

ASUS ROG STRIX B550-A GAMINGNot verified

MSI B550M PRO-VDH WIFI1 CPU; 1 pump; 3 system fan headers

Sources

ASUS ROG STRIX B550-A GAMING

No source recorded for this side.

MSI B550M PRO-VDH WIFI

Manufacturer specification · No included fans or current limits inferred.

MSI B550M PRO-VDH WIFI — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Processor-dependent display outputs

ASUS ROG STRIX B550-A GAMINGNot verified

MSI B550M PRO-VDH WIFIVGA; DisplayPort 4096×2160 at 60 Hz; HDMI 2.1 4096×2160 at 60 Hz

Sources

ASUS ROG STRIX B550-A GAMING

No source recorded for this side.

MSI B550M PRO-VDH WIFI

Manufacturer specification · Requires integrated processor graphics; CPU-dependent modes.

MSI B550M PRO-VDH WIFI — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Internal headers and connectors

ASUS ROG STRIX B550-A GAMING1 x CPU Fan connector(s) 1 x CPU OPT Fan connector(s) 3 x Chassis Fan connector(s) 1 x AIO_PUMP connector 1 x AAFP connector 2 x Aura RGB Strip Header(s) 1 x Addressable Gen 2 header(s) 1 x USB 3.2 Gen 1(up to 5Gbps) connector(s) support(s) additional 2 USB 3.2 Gen 1 port(s) 2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s) 1 x M.2 Socket 1 with M key, type 2242/2260/2280/22110 storage devices support(SATA & PCIe 4.0 x4 mode) 1 x M.2 Socket 2 with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode) 6 x SATA 6Gb/s connector(s) 1 x Thunderbolt header(s) 1 x 24-pin EATX Power connector(s) 1 x 8-pin ATX 12V Power connector(s) 1 x 4-pin ATX 12V Power connector(s) 1 x System panel(s) 1 x Thermal sensor connector(s) 1 x Clear CMOS jumper(s)

MSI B550M PRO-VDH WIFINot verified

Sources

ASUS ROG STRIX B550-A GAMING

Manufacturer specification

ASUS ROG STRIX B550-A GAMING — official UK technical specifications

MSI B550M PRO-VDH WIFI

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

NVMe RAID modes

ASUS ROG STRIX B550-A GAMINGNot verified

MSI B550M PRO-VDH WIFIRAID 0/1

Sources

ASUS ROG STRIX B550-A GAMING

No source recorded for this side.

MSI B550M PRO-VDH WIFI

Manufacturer specification · Requires compatible drives and array configuration.

MSI B550M PRO-VDH WIFI — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Listed operating systems

ASUS ROG STRIX B550-A GAMINGWindows® 10 64-bit

MSI B550M PRO-VDH WIFINot verified

Sources

ASUS ROG STRIX B550-A GAMING

Manufacturer specification

ASUS ROG STRIX B550-A GAMING — official UK technical specifications

MSI B550M PRO-VDH WIFI

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Primary expansion-slot link

ASUS ROG STRIX B550-A GAMINGNot verified

MSI B550M PRO-VDH WIFIPCI_E1: PCIe 4.0 x16

Sources

ASUS ROG STRIX B550-A GAMING

No source recorded for this side.

MSI B550M PRO-VDH WIFI

Manufacturer specification · PCIe 4.0 or 3.0 depending on the installed processor; not a measured graphics performance result.

MSI B550M PRO-VDH WIFI — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Rear-panel ports

ASUS ROG STRIX B550-A GAMING1 x Intel® I225-V 2.5Gb Ethernet 1 x DisplayPort 1 x HDMI 2 x USB 3.2 Gen 2 (1 x Type-A+1 x USB Type-C®) 4 x USB 3.2 Gen 1 2 x USB 2.0 1 x Optical S/PDIF out 1 x BIOS FlashBack™ Button(s) 5 x Gold-plated audio jacks

MSI B550M PRO-VDH WIFINot verified

Sources

ASUS ROG STRIX B550-A GAMING

Manufacturer specification

ASUS ROG STRIX B550-A GAMING — official UK technical specifications

MSI B550M PRO-VDH WIFI

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

SATA storage ports

ASUS ROG STRIX B550-A GAMINGNot verified

MSI B550M PRO-VDH WIFI4

Sources

ASUS ROG STRIX B550-A GAMING

No source recorded for this side.

MSI B550M PRO-VDH WIFI

Manufacturer specification · SATA 6 Gb/s connectors, not supplied drives or power cables. M.2 PCIe generation depends on the CPU. Both slots accept 2242/2260/2280 drives.

MSI B550M PRO-VDH WIFI — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

SATA RAID modes

ASUS ROG STRIX B550-A GAMINGNot verified

MSI B550M PRO-VDH WIFIRAID 0/1/10

Sources

ASUS ROG STRIX B550-A GAMING

No source recorded for this side.

MSI B550M PRO-VDH WIFI

Manufacturer specification · Requires array configuration. No cross-controller array support inferred.

MSI B550M PRO-VDH WIFI — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

USB ports and headers

ASUS ROG STRIX B550-A GAMINGRear USB Port ( Total 8 ) 2 x USB 3.2 Gen 2 port(s)(1 x Type-A +1 x USB Type-C®) 4 x USB 3.2 Gen 1 port(s)(4 x Type-A) 2 x USB 2.0 port(s) Front USB Port ( Total 6 ) 2 x USB 3.2 Gen 1 port(s) 4 x USB 2.0 port(s)

MSI B550M PRO-VDH WIFINot verified

Sources

ASUS ROG STRIX B550-A GAMING

Manufacturer specification

ASUS ROG STRIX B550-A GAMING — official UK technical specifications

MSI B550M PRO-VDH WIFI

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Front USB header capacity

ASUS ROG STRIX B550-A GAMINGNot verified

MSI B550M PRO-VDH WIFI4 USB 2.0; 2 USB 5 Gb/s Type-A; 1 USB 5 Gb/s Type-C

Sources

ASUS ROG STRIX B550-A GAMING

No source recorded for this side.

MSI B550M PRO-VDH WIFI

Manufacturer specification · Requires case ports and cables; not rear sockets.

MSI B550M PRO-VDH WIFI — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Rear USB ports

ASUS ROG STRIX B550-A GAMINGNot verified

MSI B550M PRO-VDH WIFI2 USB 2.0; 4 USB 5 Gb/s Type-A

Sources

ASUS ROG STRIX B550-A GAMING

No source recorded for this side.

MSI B550M PRO-VDH WIFI

Manufacturer specification · Interface limits, not measured aggregate throughput.

MSI B550M PRO-VDH WIFI — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

2 shared fields have the same recorded value.

WHAT EACH CHOICE ASKS OF YOU

What it brings and what to check

ASUS ROG STRIX B550-A GAMING

What it brings

Published motherboard interfaces and configuration are available from the exact-model ASUS specification source.
Manufacturer source

What to check

Compatibility and maximum operating modes depend on the source’s stated hardware, firmware and connection requirements; manufacturer figures are not independent measurements.
Manufacturer source

MSI B550M PRO-VDH WIFI

What it brings

Two M.2 slots, with the CPU-connected M2_1 supporting PCIe 4.0 x4, and support for ECC UDIMMs.
Manufacturer source
Built-in Wi-Fi and Bluetooth plus a rear Flash BIOS button.
Manufacturer source

What to check

Older wireless (Wi-Fi AC, up to 433 Mb/s link rate, and Bluetooth 4.2), only 1 Gb Ethernet, and rear USB tops out at 5 Gb/s with no USB-C.
Manufacturer source

COMPARE THE DETAILS

Full specifications

How we verify

Differences only

26 of 26 specifications Sources in each row

Source-backed specifications for ASUS ROG STRIX B550-A GAMING and MSI B550M PRO-VDH WIFI
Specification	ASUS ROG STRIX B550-A GAMING	MSI B550M PRO-VDH WIFI

CPU socket Sources ASUS ROG STRIX B550-A GAMING Manufacturer specification ASUS ROG STRIX B550-A GAMING — official UK technical specifications MSI B550M PRO-VDH WIFI Manufacturer specification · Match the exact CPU and required BIOS as well as the physical socket. MSI B550M PRO-VDH WIFI — manufacturer specifications	AM4	AM4
Chipset Sources ASUS ROG STRIX B550-A GAMING Manufacturer specification ASUS ROG STRIX B550-A GAMING — official UK technical specifications MSI B550M PRO-VDH WIFI Manufacturer specification MSI B550M PRO-VDH WIFI — manufacturer specifications	AMD B550	AMD B550
Form factor and dimensionsDifferent Sources ASUS ROG STRIX B550-A GAMING Manufacturer specification ASUS ROG STRIX B550-A GAMING — official UK technical specifications MSI B550M PRO-VDH WIFI Manufacturer specification · Board dimensions, not retail packaging. Check case mounting positions, clearance and cable routing. MSI B550M PRO-VDH WIFI — manufacturer specifications	ATX Form Factor 12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )	Micro-ATX; 244 × 244 mm
CPU support and BIOS requirementsDifferent Sources ASUS ROG STRIX B550-A GAMING Manufacturer specification · Exact CPU support and BIOS revision depend on the processor and the current ASUS CPU support list; the family statement is not a guarantee for every processor. ASUS ROG STRIX B550-A GAMING — official UK technical specifications MSI B550M PRO-VDH WIFI Manufacturer specification · Check MSI's exact CPU support list and its required BIOS. Family support does not confirm the firmware installed on a retail board. MSI B550M PRO-VDH WIFI — manufacturer specifications	*AMD AM4 Socket for AMD Ryzen™ 5000 Series/ 4000 G-Series/ 3000 Series Desktop Processors Refer to www.asus.com for CPU support list BIOS: 256 Mb Flash ROM, UEFI AMI BIOS**	AMD Ryzen 5000 / 3000 Series (except Ryzen 5 3400G and Ryzen 3 3200G) and 4000 G-Series
Listed operating systems Sources ASUS ROG STRIX B550-A GAMING Manufacturer specification ASUS ROG STRIX B550-A GAMING — official UK technical specifications MSI B550M PRO-VDH WIFI No source recorded.	Windows® 10 64-bit	Not provided
Rear Flash BIOS button Sources ASUS ROG STRIX B550-A GAMING No source recorded. MSI B550M PRO-VDH WIFI Manufacturer specification · Recovery procedure and USB preparation require the manual. MSI B550M PRO-VDH WIFI — manufacturer specifications	Not provided	Yes

Memory type, slots and limitDifferent Sources ASUS ROG STRIX B550-A GAMING Manufacturer specification ASUS ROG STRIX B550-A GAMING — official UK technical specifications MSI B550M PRO-VDH WIFI The overclocked speed is MSI's 1DPC 1R maximum; MSI lists 1DPC 2R up to 3733, 2DPC 1R up to 3866 and 2DPC 2R up to 3466 MHz. JEDEC speeds run up to DDR4-3200. · Manufacturer specification · CPU, BIOS and validated DIMM population determine supported capacity and speeds. DDR4 and DDR5 are not interchangeable. MSI B550M PRO-VDH WIFI — manufacturer specifications	AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors 4 x DIMM, Max. 128GB, DDR4 4600(O.C)/4400(O.C)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3600(O.C.)/3466(O.C.)/3200/3000/2800/2666/2400/2133 MHz Un-buffered Memory AMD RyzenTM 4000 G-Series Processors 4 x DIMM, Max. 128GB, DDR4 5100(O.C)/4800(O.C.)/4600(O.C)/4400(O.C)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3600(O.C.)/3466(O.C.)/3200/3000/2800/2666/2400/2133 MHz Un-buffered Memory Dual Channel Memory Architecture OptiMem II ECC Memory (ECC mode) support varies by CPU. * Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).	4 DDR4 DIMM slots; dual channel; up to 128 GB; up to DDR4-4400+ (OC); A-XMP; non-ECC and ECC unbuffered
Maximum listed memory Sources ASUS ROG STRIX B550-A GAMING No source recorded. MSI B550M PRO-VDH WIFI Manufacturer specification · Manufacturer capacity ceiling for this exact board, not included memory or a performance measurement. CPU, BIOS, DIMM population and the validated-module list determine support. DDR4 slots require DDR4 modules; DDR4 and DDR5 are not interchangeable. MSI B550M PRO-VDH WIFI — manufacturer specifications	Not provided	128 GB
DIMM slots Sources ASUS ROG STRIX B550-A GAMING No source recorded. MSI B550M PRO-VDH WIFI Manufacturer specification · Physical DDR4 module positions, not included modules. Consult the board manual for population order and compatible capacities. MSI B550M PRO-VDH WIFI — manufacturer specifications	Not provided	4

Storage interfaces and restrictionsDifferent Sources ASUS ROG STRIX B550-A GAMING Manufacturer specification ASUS ROG STRIX B550-A GAMING — official UK technical specifications MSI B550M PRO-VDH WIFI M2_1 connects to the CPU; M2_2 connects to the B550 chipset. · Manufacturer specification · M2_1 runs at PCIe 4.0 or 3.0 depending on the installed processor. Both M.2 slots accept 2242/2260/2280 drives. MSI B550M PRO-VDH WIFI — manufacturer specifications	Total supports 2 x M.2 slot(s) and 6 x SATA 6Gb/s ports AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors: 1 x M.2_1 socket 3, with M key, type 2242/2260/2280/22110 storage devices support(SATA & PCIe 4.0 x4 mode) AMD RyzenTM 4000 G-Series Processor: 1 x M.2_1 socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode)* AMD B550 Chipset: 1 x M.2_2 socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode) 6 x SATA 6Gb/s port(s), Support Raid 0, 1, 10	1 × M.2 PCIe 4.0 x4; 1 × M.2 PCIe 3.0 x4; M2_1 also supports SATA; 4 × SATA 6 Gb/s
Onboard M.2 storage slots Sources ASUS ROG STRIX B550-A GAMING No source recorded. MSI B550M PRO-VDH WIFI Manufacturer specification · Onboard M.2 storage positions only. M.2 PCIe generation depends on the CPU. Both slots accept 2242/2260/2280 drives. MSI B550M PRO-VDH WIFI — manufacturer specifications	Not provided	2
SATA storage ports Sources ASUS ROG STRIX B550-A GAMING No source recorded. MSI B550M PRO-VDH WIFI Manufacturer specification · SATA 6 Gb/s connectors, not supplied drives or power cables. M.2 PCIe generation depends on the CPU. Both slots accept 2242/2260/2280 drives. MSI B550M PRO-VDH WIFI — manufacturer specifications	Not provided	4
SATA RAID modes Sources ASUS ROG STRIX B550-A GAMING No source recorded. MSI B550M PRO-VDH WIFI Manufacturer specification · Requires array configuration. No cross-controller array support inferred. MSI B550M PRO-VDH WIFI — manufacturer specifications	Not provided	RAID 0/1/10
NVMe RAID modes Sources ASUS ROG STRIX B550-A GAMING No source recorded. MSI B550M PRO-VDH WIFI Manufacturer specification · Requires compatible drives and array configuration. MSI B550M PRO-VDH WIFI — manufacturer specifications	Not provided	RAID 0/1

Expansion slots and restrictions Sources ASUS ROG STRIX B550-A GAMING Manufacturer specification ASUS ROG STRIX B550-A GAMING — official UK technical specifications MSI B550M PRO-VDH WIFI No source recorded.	AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors 1 x PCIe 4.0 x16 (x16 mode) AMD RyzenTM 4000 G-Series Processor 1 x PCIe 3.0 x16 (x16 mode) AMD B550 Chipset 1 x PCIe 3.0 x16 (x4 mode) * 3 x PCIe 3.0 x1	Not provided
Primary expansion-slot link Sources ASUS ROG STRIX B550-A GAMING No source recorded. MSI B550M PRO-VDH WIFI Manufacturer specification · PCIe 4.0 or 3.0 depending on the installed processor; not a measured graphics performance result. MSI B550M PRO-VDH WIFI — manufacturer specifications	Not provided	PCI_E1: PCIe 4.0 x16
Secondary expansion slots Sources ASUS ROG STRIX B550-A GAMING No source recorded. MSI B550M PRO-VDH WIFI Manufacturer specification · Physical connector length and electrical lane count differ. MSI B550M PRO-VDH WIFI — manufacturer specifications	Not provided	2 PCIe 3.0 x1 slots

USB ports and headers Sources ASUS ROG STRIX B550-A GAMING Manufacturer specification ASUS ROG STRIX B550-A GAMING — official UK technical specifications MSI B550M PRO-VDH WIFI No source recorded.	Rear USB Port ( Total 8 ) 2 x USB 3.2 Gen 2 port(s)(1 x Type-A +1 x USB Type-C®) 4 x USB 3.2 Gen 1 port(s)(4 x Type-A) 2 x USB 2.0 port(s) Front USB Port ( Total 6 ) 2 x USB 3.2 Gen 1 port(s) 4 x USB 2.0 port(s)	Not provided
Rear-panel ports Sources ASUS ROG STRIX B550-A GAMING Manufacturer specification ASUS ROG STRIX B550-A GAMING — official UK technical specifications MSI B550M PRO-VDH WIFI No source recorded.	1 x Intel® I225-V 2.5Gb Ethernet 1 x DisplayPort 1 x HDMI 2 x USB 3.2 Gen 2 (1 x Type-A+1 x USB Type-C®) 4 x USB 3.2 Gen 1 2 x USB 2.0 1 x Optical S/PDIF out 1 x BIOS FlashBack™ Button(s) 5 x Gold-plated audio jacks	Not provided
Audio interfacesDifferent Sources ASUS ROG STRIX B550-A GAMING Manufacturer specification ASUS ROG STRIX B550-A GAMING — official UK technical specifications MSI B550M PRO-VDH WIFI Manufacturer specification · Manufacturer-listed onboard audio hardware, not a measured sound-quality result. Where alternatives are listed, no particular unseen controller revision is promised. MSI B550M PRO-VDH WIFI — manufacturer specifications	ROG SupremeFX 8-Channel High Definition Audio CODEC S1220A - Dual OP Amplifiers - Impedance sense for front and rear headphone outputs - Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking - High quality 120 dB SNR stereo playback output and 113 dB SNR recording input - Supports up to 32-Bit/192kHz playback * Audio Feature: - SupremeFX Shielding™ Technology - Gold-plated jacks - Optical S/PDIF in port(s) at back panel - Audio Shielding - Premium Japanese audio capacitors - Audio Cover * Due to limitations in HDA bandwidth, 32-Bit/192kHz is not supported for 8-Channel audio.	Realtek ALC892 or ALC897 codec; 7.1-channel
Processor-dependent display outputs Sources ASUS ROG STRIX B550-A GAMING No source recorded. MSI B550M PRO-VDH WIFI Manufacturer specification · Requires integrated processor graphics; CPU-dependent modes. MSI B550M PRO-VDH WIFI — manufacturer specifications	Not provided	VGA; DisplayPort 4096×2160 at 60 Hz; HDMI 2.1 4096×2160 at 60 Hz
Rear USB ports Sources ASUS ROG STRIX B550-A GAMING No source recorded. MSI B550M PRO-VDH WIFI Manufacturer specification · Interface limits, not measured aggregate throughput. MSI B550M PRO-VDH WIFI — manufacturer specifications	Not provided	2 USB 2.0; 4 USB 5 Gb/s Type-A
Front USB header capacity Sources ASUS ROG STRIX B550-A GAMING No source recorded. MSI B550M PRO-VDH WIFI Manufacturer specification · Requires case ports and cables; not rear sockets. MSI B550M PRO-VDH WIFI — manufacturer specifications	Not provided	4 USB 2.0; 2 USB 5 Gb/s Type-A; 1 USB 5 Gb/s Type-C

Network interfaces and requirementsDifferent Sources ASUS ROG STRIX B550-A GAMING Manufacturer specification ASUS ROG STRIX B550-A GAMING — official UK technical specifications MSI B550M PRO-VDH WIFI Manufacturer specification · MSI lists a maximum Wi-Fi link rate of 433 Mb/s; this is not measured throughput. Only the 2.4 and 5 GHz bands are listed. MSI B550M PRO-VDH WIFI — manufacturer specifications	Intel® I225-V 2.5Gb Ethernet ASUS LANGuard	Realtek 8111HN 1 Gb Ethernet; Wi-Fi AC (802.11ac, 2.4/5 GHz); Bluetooth 4.2

Cooling headers Sources ASUS ROG STRIX B550-A GAMING No source recorded. MSI B550M PRO-VDH WIFI Manufacturer specification · No included fans or current limits inferred. MSI B550M PRO-VDH WIFI — manufacturer specifications	Not provided	1 CPU; 1 pump; 3 system fan headers

Internal headers and connectors Sources ASUS ROG STRIX B550-A GAMING Manufacturer specification ASUS ROG STRIX B550-A GAMING — official UK technical specifications MSI B550M PRO-VDH WIFI No source recorded.	1 x CPU Fan connector(s) 1 x CPU OPT Fan connector(s) 3 x Chassis Fan connector(s) 1 x AIO_PUMP connector 1 x AAFP connector 2 x Aura RGB Strip Header(s) 1 x Addressable Gen 2 header(s) 1 x USB 3.2 Gen 1(up to 5Gbps) connector(s) support(s) additional 2 USB 3.2 Gen 1 port(s) 2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s) 1 x M.2 Socket 1 with M key, type 2242/2260/2280/22110 storage devices support(SATA & PCIe 4.0 x4 mode) 1 x M.2 Socket 2 with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode) 6 x SATA 6Gb/s connector(s) 1 x Thunderbolt header(s) 1 x 24-pin EATX Power connector(s) 1 x 8-pin ATX 12V Power connector(s) 1 x 4-pin ATX 12V Power connector(s) 1 x System panel(s) 1 x Thermal sensor connector(s) 1 x Clear CMOS jumper(s)	Not provided

First product manufacturer source Second product manufacturer source

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Each record represents an explicitly checked model and configuration. Original import: 5 Sept 2026; this is not its verification date. This is not a list of current offers or a popularity ranking.

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