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ASUS PRIME B550-PLUS vs ASUS TUF GAMING B450-PLUS II

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

Compared products

YOUR FIRST CHOICE

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

WHAT DIFFERS

ChipsetAMD B550AMD B450

The first of 7 verified differences, in the order listed below. Not a rating.

See the 7 verified differences

THE CONTENDER

ASUS TUF GAMING B450-PLUS II

UK manufacturer specification · TUF GAMING B450-PLUS II

Full product profile Official image

Exact model & source notes

TUF GAMING B450-PLUS II 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

PRIME B550-PLUS UK & US retailers

UK & US price history: no verified listing yet

TUF GAMING B450-PLUS II 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 SIDE7 topics

SELECTED TOPIC

01 / 07

Chipset

Different hardware. A chip name or generation does not quantify real-world performance.

ASUS PRIME B550-PLUSAMD B550

Manufacturer specification

Source 1

ASUS TUF GAMING B450-PLUS IIAMD B450

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 ↓

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

Chipset

In Visual facts

ASUS PRIME B550-PLUSAMD B550

ASUS TUF GAMING B450-PLUS IIAMD B450

Sources

ASUS PRIME B550-PLUS

Manufacturer specification

ASUS PRIME B550-PLUS — official UK technical specifications

ASUS TUF GAMING B450-PLUS II

Manufacturer specification

ASUS TUF GAMING B450-PLUS II — official UK technical specifications

Different hardware. A chip name or generation does not quantify real-world performance.

Memory type, slots and limit

In Visual facts

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).

ASUS TUF GAMING B450-PLUS II3rd/2nd/1st Gen AMD Ryzen™/ 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics/ Athlon™ with Radeon™ Vega Graphics Processors 4 x DIMM, Max. 128GB, DDR4 4400(O.C)/3533(O.C)/3466(O.C.)/3200(O.C.)/3000(O.C.)/2800(O.C.)/2666/2400/2133 MHz Un-buffered Memory Dual Channel Memory Architecture ECC Memory (ECC mode) support varies by CPU. * Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists). * The maximum memory frequency supported varies by processor.

Sources

ASUS PRIME B550-PLUS

Manufacturer specification

ASUS PRIME B550-PLUS — official UK technical specifications

ASUS TUF GAMING B450-PLUS II

Manufacturer specification

ASUS TUF GAMING B450-PLUS II — official UK technical specifications

Check the exact configuration and source conditions for your use.

Storage interfaces and restrictions

In Visual facts

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

ASUS TUF GAMING B450-PLUS II3rd/2nd/1st Gen AMD Ryzen™/ 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics: 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 AMD Athlon™ with Radeon™ Vega Graphics Processors: 1 x M.2 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA mode)*2 3rd/2nd/1st Gen AMD Ryzen™/ 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics/ Athlon™ with Radeon™ Vega Graphics Processors: 2 x SATA 6Gb/s port(s) Support Raid 0, 1, 10 AMD B450 chipset: 1 x M.2 Socket 3, with M Key, type 2242/2260/2280 storage devices support (PCIE 2.0 x4)*3 4 x SATA 6Gb/s port(s) Support Raid 0, 1, 10

Sources

ASUS PRIME B550-PLUS

Manufacturer specification

ASUS PRIME B550-PLUS — official UK technical specifications

ASUS TUF GAMING B450-PLUS II

Manufacturer specification

ASUS TUF GAMING B450-PLUS II — official UK technical specifications

Check the exact configuration and source conditions for your use.

Network interfaces and requirements

In Visual facts

ASUS PRIME B550-PLUSRealtek® RTL8111H ASUS LANGuard

ASUS TUF GAMING B450-PLUS IIRealtek® L8200A TUF LANGuard

Sources

ASUS PRIME B550-PLUS

Manufacturer specification

ASUS PRIME B550-PLUS — official UK technical specifications

ASUS TUF GAMING B450-PLUS II

Manufacturer specification

ASUS TUF GAMING B450-PLUS II — official UK technical specifications

Check the exact configuration and source conditions for your use.

Audio interfaces

In Visual facts

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

ASUS TUF GAMING B450-PLUS IIRealtek® ALC S1200A 8-Channel High Definition Audio CODEC *4 Audio Feature: - Exclusive DTS Custom for GAMING Headsets. - Audio Shielding: Ensures precision analog/digital separation and greatly reduced multi-lateral interference - Dedicated audio PCB layers: Separate layers for left and right channels to guard the quality of the sensitive audio signals - Premium Japanese-made audio capacitors: Provide warm, natural and immersive sound with exceptional clarity and fidelity - Audio Cover: Effective shielding preserves the integrity of audio signals to ensure best quality.

Sources

ASUS PRIME B550-PLUS

Manufacturer specification

ASUS PRIME B550-PLUS — official UK technical specifications

ASUS TUF GAMING B450-PLUS II

Manufacturer specification

ASUS TUF GAMING B450-PLUS II — official UK technical specifications

Check the exact configuration and source conditions for your use.

Expansion slots and restrictions

In Visual facts

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.

ASUS TUF GAMING B450-PLUS II3rd/2nd/1st Gen AMD Ryzen™ Processors 1 x PCIe 3.0/2.0 x16 (x16 mode) 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics Processors 1 x PCIe 3.0/2.0 x16 (x8 mode) AMD Athlon™ with Radeon™ Vega Graphics Processors 1 x PCIe 3.0/2.0 x16 (x4 mode) AMD B450 chipset 1 x PCIe 2.0 x16 (max at x4 mode) *1 3 x PCIe 2.0 x1

Sources

ASUS PRIME B550-PLUS

Manufacturer specification

ASUS PRIME B550-PLUS — official UK technical specifications

ASUS TUF GAMING B450-PLUS II

Manufacturer specification

ASUS TUF GAMING B450-PLUS II — official UK technical specifications

Check the exact configuration and source conditions for your use.

Show 1 more verified difference

Listed operating systems

In Visual facts

ASUS PRIME B550-PLUSWindows® 10 64-bit

ASUS TUF GAMING B450-PLUS IIWindows® 10 64-bit Windows® 7 64-bit *5

Sources

ASUS PRIME B550-PLUS

Manufacturer specification

ASUS PRIME B550-PLUS — official UK technical specifications

ASUS TUF GAMING B450-PLUS II

Manufacturer specification

ASUS TUF GAMING B450-PLUS II — official UK technical specifications

Check the exact configuration and source conditions for your use.

Configuration & compatibility details (1)

CPU support and BIOS requirements

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

ASUS TUF GAMING B450-PLUS IIAMD AM4 Socket for 3rd/2nd/1st Gen AMD Ryzen™/2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics/Athlon™ with Radeon™ Vega Graphics Processors * Refer to www.asus.com for CPU support list BIOS: 256 Mb Flash ROM, UEFI AMI BIOS

Sources

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

ASUS TUF GAMING B450-PLUS II

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 B450-PLUS II — official UK technical specifications

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

2 shared fields have the same recorded value.

WHAT EACH CHOICE ASKS OF YOU

What it brings and what to check

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

ASUS TUF GAMING B450-PLUS II

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 PRIME B550-PLUS and ASUS TUF GAMING B450-PLUS II
Specification	ASUS PRIME B550-PLUS	ASUS TUF GAMING B450-PLUS II

CPU socket Sources ASUS PRIME B550-PLUS Manufacturer specification ASUS PRIME B550-PLUS — official UK technical specifications ASUS TUF GAMING B450-PLUS II Manufacturer specification ASUS TUF GAMING B450-PLUS II — official UK technical specifications	AM4	AM4
ChipsetDifferent Sources ASUS PRIME B550-PLUS Manufacturer specification ASUS PRIME B550-PLUS — official UK technical specifications ASUS TUF GAMING B450-PLUS II Manufacturer specification ASUS TUF GAMING B450-PLUS II — official UK technical specifications	AMD B550	AMD B450
Form factor and dimensions Sources ASUS PRIME B550-PLUS Manufacturer specification ASUS PRIME B550-PLUS — official UK technical specifications ASUS TUF GAMING B450-PLUS II Manufacturer specification ASUS TUF GAMING B450-PLUS II — official UK technical specifications	ATX Form Factor 12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )	ATX Form Factor 12.0 inch x 9.6 inch ( 30.5 cm x 24.4 cm )
CPU support and BIOS requirementsDifferent Sources 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 ASUS TUF GAMING B450-PLUS II 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 B450-PLUS II — official UK technical specifications	*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**	AMD AM4 Socket for 3rd/2nd/1st Gen AMD Ryzen™/2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics/Athlon™ with Radeon™ Vega Graphics Processors * Refer to www.asus.com for CPU support list BIOS: 256 Mb Flash ROM, UEFI AMI BIOS
Listed operating systemsDifferent Sources ASUS PRIME B550-PLUS Manufacturer specification ASUS PRIME B550-PLUS — official UK technical specifications ASUS TUF GAMING B450-PLUS II Manufacturer specification ASUS TUF GAMING B450-PLUS II — official UK technical specifications	Windows® 10 64-bit	*Windows® 10 64-bit Windows® 7 64-bit 5**

Memory type, slots and limitDifferent Sources ASUS PRIME B550-PLUS Manufacturer specification ASUS PRIME B550-PLUS — official UK technical specifications ASUS TUF GAMING B450-PLUS II Manufacturer specification ASUS TUF GAMING B450-PLUS II — official UK technical specifications	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).	3rd/2nd/1st Gen AMD Ryzen™/ 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics/ Athlon™ with Radeon™ Vega Graphics Processors 4 x DIMM, Max. 128GB, DDR4 4400(O.C)/3533(O.C)/3466(O.C.)/3200(O.C.)/3000(O.C.)/2800(O.C.)/2666/2400/2133 MHz Un-buffered Memory Dual Channel Memory Architecture ECC Memory (ECC mode) support varies by CPU. * Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists). * The maximum memory frequency supported varies by processor.

Storage interfaces and restrictionsDifferent Sources ASUS PRIME B550-PLUS Manufacturer specification ASUS PRIME B550-PLUS — official UK technical specifications ASUS TUF GAMING B450-PLUS II Manufacturer specification ASUS TUF GAMING B450-PLUS II — official UK technical 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 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	3rd/2nd/1st Gen AMD Ryzen™/ 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics: 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 AMD Athlon™ with Radeon™ Vega Graphics Processors: 1 x M.2 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA mode)2 3rd/2nd/1st Gen AMD Ryzen™/ 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics/ Athlon™ with Radeon™ Vega Graphics Processors: 2 x SATA 6Gb/s port(s) Support Raid 0, 1, 10 AMD B450 chipset: 1 x M.2 Socket 3, with M Key, type 2242/2260/2280 storage devices support (PCIE 2.0 x4)*3 4 x SATA 6Gb/s port(s) Support Raid 0, 1, 10

Expansion slots and restrictionsDifferent Sources ASUS PRIME B550-PLUS Manufacturer specification ASUS PRIME B550-PLUS — official UK technical specifications ASUS TUF GAMING B450-PLUS II Manufacturer specification ASUS TUF GAMING B450-PLUS II — official UK technical specifications	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.	3rd/2nd/1st Gen AMD Ryzen™ Processors 1 x PCIe 3.0/2.0 x16 (x16 mode) 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics Processors 1 x PCIe 3.0/2.0 x16 (x8 mode) AMD Athlon™ with Radeon™ Vega Graphics Processors 1 x PCIe 3.0/2.0 x16 (x4 mode) AMD B450 chipset 1 x PCIe 2.0 x16 (max at x4 mode) *1 3 x PCIe 2.0 x1

Audio interfacesDifferent Sources ASUS PRIME B550-PLUS Manufacturer specification ASUS PRIME B550-PLUS — official UK technical specifications ASUS TUF GAMING B450-PLUS II Manufacturer specification ASUS TUF GAMING B450-PLUS II — official UK technical specifications	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	Realtek® ALC S1200A 8-Channel High Definition Audio CODEC *4 Audio Feature: - Exclusive DTS Custom for GAMING Headsets. - Audio Shielding: Ensures precision analog/digital separation and greatly reduced multi-lateral interference - Dedicated audio PCB layers: Separate layers for left and right channels to guard the quality of the sensitive audio signals - Premium Japanese-made audio capacitors: Provide warm, natural and immersive sound with exceptional clarity and fidelity - Audio Cover: Effective shielding preserves the integrity of audio signals to ensure best quality.

Network interfaces and requirementsDifferent Sources ASUS PRIME B550-PLUS Manufacturer specification ASUS PRIME B550-PLUS — official UK technical specifications ASUS TUF GAMING B450-PLUS II Manufacturer specification ASUS TUF GAMING B450-PLUS II — official UK technical specifications	Realtek® RTL8111H ASUS LANGuard	Realtek® L8200A TUF 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

MSI PRO B550M-VC WIFI

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

Prices & product profile

MSI B550M PRO-VDH 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.