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MSI

B550 Gaming Spec and Price in the United Kingdom

AM4B550

An ATX AM4 board on the AMD B550 chipset with two x16-length slots, the primary at PCIe 4.0, and two M.2 slots. Four DDR4 DIMM slots hold up to 128GB, and the board carries six SATA ports and one rear USB Type-C port, with no onboard Wi-Fi.

Tied 34th of 1869 models in the Motherboards catalog on RAM slots — 1241 models share this figure. Tied 792nd of 1869 models in the Motherboards catalog on Max memory — 720 models share this figure.

Current best price
£114.73at Amazon.co.uk · captured 2026-09-09View at Amazon.co.uk

Captured periodically and may have changed.

Price history

30D90D180DAll
  • B550 Gaming
August 24, 20263 capturestoday · £116.64

Each point is one capture, not a list price. How we track prices

Specifications

Socket
AM4
Chipset
B550
Form factor
ATX
Memory type
DDR4
RAM slots
4
Max memory
128 GB
M.2 slots
2
PCIe x16 slots
2
PCIe version
4.0
SATA ports
6
USB-C ports
1
Wi-Fi
No

Guides for this category

How to choose a motherboardThe socket decides which processor goes in; chipset, form factor, memory support and the slot counts decide whether the rest of the build fits around it.

Sources

Every spec above was pulled from one of these — a field a source didn't state was left off rather than estimated.