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ASUS TUF GAMING B550M-PLUS vs ASUS PRIME B550-PLUS

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

Compared products

YOUR FIRST CHOICE

ASUS TUF GAMING B550M-PLUS

Global manufacturer specification · TUF GAMING B550M-PLUS

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Exact model & source notes

TUF GAMING B550M-PLUS motherboard, identified in the ASUS Global 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

WHAT DIFFERS

6 verified differences, led by Form factor and dimensions, memory type, slots and limit and storage interfaces and restrictions. Compared in full below. Not a rating.

See the 6 verified differences

THE CONTENDER

ASUS PRIME B550-PLUS

UK manufacturer specification · PRIME B550-PLUS

Full product profile Official image

Exact model & source notes

PRIME B550-PLUS 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

TUF GAMING B550M-PLUS UK & US retailers

UK & US price history: no verified listing yet

PRIME B550-PLUS UK & US retailers

UK & US price history: no verified listing yet

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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 SIDE6 topics

SELECTED TOPIC

01 / 06

Form factor and dimensions

Check the exact configuration and source conditions for your use.

ASUS TUF GAMING B550M-PLUSmATX Form Factor,9.6 inch x 9.6 inch ( 24.4 cm x 24.4 cm )

Manufacturer specification

Source 1

ASUS PRIME B550-PLUSATX Form Factor 12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )

Manufacturer specification

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 ↓

6 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 TUF GAMING B550M-PLUSmATX Form Factor,9.6 inch x 9.6 inch ( 24.4 cm x 24.4 cm )

ASUS PRIME B550-PLUSATX Form Factor 12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )

Sources

ASUS TUF GAMING B550M-PLUS

Manufacturer specification

ASUS TUF GAMING B550M-PLUS — official Global technical specifications

ASUS PRIME B550-PLUS

Manufacturer specification

ASUS PRIME B550-PLUS — official UK technical specifications

Check the exact configuration and source conditions for your use.

Memory type, slots and limit

In Visual facts

ASUS TUF GAMING B550M-PLUS* Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists), and memory frequency support depends on the CPU types.,4 x DIMM, Max. 128GB, DDR4 4866(O.C)/4800(O.C.)/4600(O.C)/4466(O.C.)/4400(O.C)/4333(O.C.)/4266(O.C.)/4200(O.C.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3400(O.C.)/3333(O.C.)/3200/3000/2933/2800/2666/2400/2133 MHz Un-buffered Memory *,ECC Memory (ECC mode) support varies by CPU.,Dual Channel Memory Architecture

ASUS PRIME B550-PLUSAMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors 4 x DIMM, Max. 128GB, DDR4 4600(O.C)/4400(O.C)/4266(O.C.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3333(O.C.)/3200/3000/2800/2666/2400/2133 MHz ECC and non-ECC, Un-buffered Memory * AMD RyzenTM 4000 G-Series Processor 4 x DIMM, Max. 128GB, DDR4 4800(O.C.)/4600(O.C)/4466(O.C.)/4400(O.C)/4266(O.C.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3600(O.C.)/3466(O.C.)/3200/3000/2800/2666/2400/2133 MHz ECC and non-ECC, Un-buffered Memory Dual Channel Memory Architecture * Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).

Sources

ASUS TUF GAMING B550M-PLUS

Manufacturer specification

ASUS TUF GAMING B550M-PLUS — official Global technical specifications

ASUS PRIME B550-PLUS

Manufacturer specification

ASUS PRIME B550-PLUS — official UK technical specifications

Check the exact configuration and source conditions for your use.

Storage interfaces and restrictions

In Visual facts

ASUS TUF GAMING B550M-PLUSAMD Ryzen™ 5000 G-Series/ 4000 G-Series Desktop Processors:,AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors:,1 x M.2_2 socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 3.0 x4 and SATA modes) storage devices support,Total supports 2 x M.2 slot(s) and 4 x SATA 6Gb/s ports,AMD B550 Chipset:,4 x SATA 6Gb/s port(s),,Support Raid 0, 1, 10,1 x M.2_1 socket 3, with M Key, Type 2242/2260/2280 (PCIE 4.0 x4 and SATA modes) storage devices support,1 x M.2_1 socket 3, with M Key, Type 2242/2260/2280 (PCIE 3.0 x4 and SATA modes) storage devices support

ASUS PRIME B550-PLUSTotal 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 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 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 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode)*2 6 x SATA 6Gb/s port(s), *2 Support Raid 0, 1, 10

Sources

ASUS TUF GAMING B550M-PLUS

Manufacturer specification

ASUS TUF GAMING B550M-PLUS — official Global technical specifications

ASUS PRIME B550-PLUS

Manufacturer specification

ASUS PRIME B550-PLUS — official UK technical specifications

Check the exact configuration and source conditions for your use.

Network interfaces and requirements

In Visual facts

ASUS TUF GAMING B550M-PLUSRealtek RTL8125B 2.5Gb Ethernet,TUF LANGuard

ASUS PRIME B550-PLUSRealtek® RTL8111H ASUS LANGuard

Sources

ASUS TUF GAMING B550M-PLUS

Manufacturer specification

ASUS TUF GAMING B550M-PLUS — official Global technical specifications

ASUS PRIME B550-PLUS

Manufacturer specification

ASUS PRIME B550-PLUS — official UK technical specifications

Check the exact configuration and source conditions for your use.

Audio interfaces

In Visual facts

ASUS TUF GAMING B550M-PLUS- Premium audio capacitors,Realtek ALC S1200A7.1 Surround Sound High Definition Audio CODEC,- Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking, up to 24-Bit/192kHz playback,- Audio Shielding,- Dedicated audio PCB layers,- Audio Cover,Audio Feature:,- Exclusive DTS Custom for GAMING Headsets.,- Optical S/PDIF out port(s) at back panel

ASUS PRIME B550-PLUSRealtek ALC887 7.1-Channel High Definition Audio CODEC - Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking, up to 24-Bit/192kHz playback Audio Feature: - Optical S/PDIF out port(s) at back panel - LED-illuminated design - Audio Shielding - Dedicated audio PCB layers - Premium Japanese audio capacitors - Unique de-pop circuit

Sources

ASUS TUF GAMING B550M-PLUS

Manufacturer specification

ASUS TUF GAMING B550M-PLUS — official Global technical specifications

ASUS PRIME B550-PLUS

Manufacturer specification

ASUS PRIME B550-PLUS — official UK technical specifications

Check the exact configuration and source conditions for your use.

Expansion slots and restrictions

In Visual facts

ASUS TUF GAMING B550M-PLUSAMD Ryzen™ 5000 G-Series/ 4000 G-Series Desktop Processors,AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors,* Support PCIe bifurcation for RAID on CPU function.,AMD B550 Chipset,1 x PCIe 3.0 x16 (x4 mode),1 x PCIe 4.0 x16 (x16 mode),1 x PCIe 3.0 x1,1 x PCIe 3.0 x16 (x16 mode)

ASUS PRIME B550-PLUSAMD 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 * Support PCIe bifurcation for RAID on CPU function.

Sources

ASUS TUF GAMING B550M-PLUS

Manufacturer specification

ASUS TUF GAMING B550M-PLUS — official Global technical specifications

ASUS PRIME B550-PLUS

Manufacturer specification

ASUS PRIME B550-PLUS — official UK technical specifications

Check the exact configuration and source conditions for your use.

Configuration & compatibility details (1)

CPU support and BIOS requirements

ASUS TUF GAMING B550M-PLUS* Refer to www.asus.com for CPU support list.,AMD AM4 Socket for AMD Ryzen™ 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors * BIOS: 256 Mb Flash ROM, UEFI AMI BIOS

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

Sources

ASUS TUF GAMING B550M-PLUS

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 TUF GAMING B550M-PLUS — official Global technical specifications

ASUS PRIME B550-PLUS

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 PRIME B550-PLUS — official UK technical specifications

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

3 shared fields have the same recorded value.

WHAT EACH CHOICE ASKS OF YOU

What it brings and what to check

ASUS TUF GAMING B550M-PLUS

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

ASUS PRIME B550-PLUS

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

COMPARE THE DETAILS

Full specifications

How we verify

Differences only

10 of 10 specifications Sources in each row

Source-backed specifications for ASUS TUF GAMING B550M-PLUS and ASUS PRIME B550-PLUS
Specification	ASUS TUF GAMING B550M-PLUS	ASUS PRIME B550-PLUS

CPU socket Sources ASUS TUF GAMING B550M-PLUS Manufacturer specification ASUS TUF GAMING B550M-PLUS — official Global technical specifications ASUS PRIME B550-PLUS Manufacturer specification ASUS PRIME B550-PLUS — official UK technical specifications	AM4	AM4
Chipset Sources ASUS TUF GAMING B550M-PLUS Manufacturer specification ASUS TUF GAMING B550M-PLUS — official Global technical specifications ASUS PRIME B550-PLUS Manufacturer specification ASUS PRIME B550-PLUS — official UK technical specifications	AMD B550	AMD B550
Form factor and dimensionsDifferent Sources ASUS TUF GAMING B550M-PLUS Manufacturer specification ASUS TUF GAMING B550M-PLUS — official Global technical specifications ASUS PRIME B550-PLUS Manufacturer specification ASUS PRIME B550-PLUS — official UK technical specifications	mATX Form Factor,9.6 inch x 9.6 inch ( 24.4 cm x 24.4 cm )	ATX Form Factor 12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )
CPU support and BIOS requirementsDifferent Sources ASUS TUF GAMING B550M-PLUS 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 TUF GAMING B550M-PLUS — official Global technical specifications ASUS PRIME B550-PLUS 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 PRIME B550-PLUS — official UK technical specifications	* Refer to www.asus.com for CPU support list.,AMD AM4 Socket for AMD Ryzen™ 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors * BIOS: 256 Mb Flash ROM, UEFI AMI BIOS	*AMD AM4 Socket for AMD Ryzen™ 5000 Series/ 4000 G-Series/ 3000 Series Desktop Processors Processors * Refer to www.asus.com for CPU support list BIOS: 256 Mb Flash ROM, UEFI AMI BIOS**
Listed operating systems Sources ASUS TUF GAMING B550M-PLUS Manufacturer specification ASUS TUF GAMING B550M-PLUS — official Global technical specifications ASUS PRIME B550-PLUS Manufacturer specification ASUS PRIME B550-PLUS — official UK technical specifications	Windows® 10 64-bit	Windows® 10 64-bit

Memory type, slots and limitDifferent Sources ASUS TUF GAMING B550M-PLUS Manufacturer specification ASUS TUF GAMING B550M-PLUS — official Global technical specifications ASUS PRIME B550-PLUS Manufacturer specification ASUS PRIME B550-PLUS — official UK technical specifications	* Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists), and memory frequency support depends on the CPU types.,4 x DIMM, Max. 128GB, DDR4 4866(O.C)/4800(O.C.)/4600(O.C)/4466(O.C.)/4400(O.C)/4333(O.C.)/4266(O.C.)/4200(O.C.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3400(O.C.)/3333(O.C.)/3200/3000/2933/2800/2666/2400/2133 MHz Un-buffered Memory *,ECC Memory (ECC mode) support varies by CPU.,Dual Channel Memory Architecture	AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors 4 x DIMM, Max. 128GB, DDR4 4600(O.C)/4400(O.C)/4266(O.C.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3333(O.C.)/3200/3000/2800/2666/2400/2133 MHz ECC and non-ECC, Un-buffered Memory * AMD RyzenTM 4000 G-Series Processor 4 x DIMM, Max. 128GB, DDR4 4800(O.C.)/4600(O.C)/4466(O.C.)/4400(O.C)/4266(O.C.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3600(O.C.)/3466(O.C.)/3200/3000/2800/2666/2400/2133 MHz ECC and non-ECC, Un-buffered Memory Dual Channel Memory Architecture * Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).

Storage interfaces and restrictionsDifferent Sources ASUS TUF GAMING B550M-PLUS Manufacturer specification ASUS TUF GAMING B550M-PLUS — official Global technical specifications ASUS PRIME B550-PLUS Manufacturer specification ASUS PRIME B550-PLUS — official UK technical specifications	AMD Ryzen™ 5000 G-Series/ 4000 G-Series Desktop Processors:,AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors:,1 x M.2_2 socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 3.0 x4 and SATA modes) storage devices support,Total supports 2 x M.2 slot(s) and 4 x SATA 6Gb/s ports,AMD B550 Chipset:,4 x SATA 6Gb/s port(s),,Support Raid 0, 1, 10,1 x M.2_1 socket 3, with M Key, Type 2242/2260/2280 (PCIE 4.0 x4 and SATA modes) storage devices support,1 x M.2_1 socket 3, with M Key, Type 2242/2260/2280 (PCIE 3.0 x4 and SATA modes) storage devices support	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 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 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 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode)2 6 x SATA 6Gb/s port(s), 2 Support Raid 0, 1, 10

Expansion slots and restrictionsDifferent Sources ASUS TUF GAMING B550M-PLUS Manufacturer specification ASUS TUF GAMING B550M-PLUS — official Global technical specifications ASUS PRIME B550-PLUS Manufacturer specification ASUS PRIME B550-PLUS — official UK technical specifications	AMD Ryzen™ 5000 G-Series/ 4000 G-Series Desktop Processors,AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors,* Support PCIe bifurcation for RAID on CPU function.,AMD B550 Chipset,1 x PCIe 3.0 x16 (x4 mode),1 x PCIe 4.0 x16 (x16 mode),1 x PCIe 3.0 x1,1 x PCIe 3.0 x16 (x16 mode)	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 * Support PCIe bifurcation for RAID on CPU function.

Audio interfacesDifferent Sources ASUS TUF GAMING B550M-PLUS Manufacturer specification ASUS TUF GAMING B550M-PLUS — official Global technical specifications ASUS PRIME B550-PLUS Manufacturer specification ASUS PRIME B550-PLUS — official UK technical specifications	- Premium audio capacitors,Realtek ALC S1200A7.1 Surround Sound High Definition Audio CODEC,- Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking, up to 24-Bit/192kHz playback,- Audio Shielding,- Dedicated audio PCB layers,- Audio Cover,Audio Feature:,- Exclusive DTS Custom for GAMING Headsets.,- Optical S/PDIF out port(s) at back panel	Realtek ALC887 7.1-Channel High Definition Audio CODEC - Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking, up to 24-Bit/192kHz playback Audio Feature: - Optical S/PDIF out port(s) at back panel - LED-illuminated design - Audio Shielding - Dedicated audio PCB layers - Premium Japanese audio capacitors - Unique de-pop circuit

Network interfaces and requirementsDifferent Sources ASUS TUF GAMING B550M-PLUS Manufacturer specification ASUS TUF GAMING B550M-PLUS — official Global technical specifications ASUS PRIME B550-PLUS Manufacturer specification ASUS PRIME B550-PLUS — official UK technical specifications	Realtek RTL8125B 2.5Gb Ethernet,TUF LANGuard	Realtek® RTL8111H ASUS LANGuard

First product manufacturer source Second product manufacturer source

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ASUS TUF GAMING B550-PLUS

CPU socket: AM4
Chipset: AMD B550
Form factor and dimensions: ATX Form Factor 12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )

Prices & product profile

ASUS ROG STRIX B550-A GAMING

CPU socket: AM4
Chipset: AMD B550
Form factor and dimensions: ATX Form Factor 12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )

Prices & product profile

ASUS Pro B550M-C/CSM

CPU socket: AM4
Chipset: AMD B550
Form factor and dimensions: mATX Form Factor,9.6 inch x 9.6 inch ( 24.4 cm x 24.4 cm )

Prices & product profile

MSI PRO B550M-VC WIFI

Maximum memory: 128 GB
DIMM slots: 4 slots
M.2 slots: 2 slots

Prices & product profile

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.