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PRIME B650M-A II-CSM Spec and Price in the United Kingdom

AM5B650

A Micro-ATX AM5 board on the AMD B650 chipset with a single PCIe 4.0 x16 slot and two M.2 slots. Four DDR5 DIMM slots take up to 192GB, and the board carries four SATA ports. Networking is 2.5 Gigabit Ethernet, with no onboard Wi-Fi.

Tied 34th of 1869 models in the Motherboards catalog on RAM slots — 1241 models share this figure. Tied 721st of 1869 models in the Motherboards catalog on Max memory — 71 models share this figure.

Current best price
£131.30at Amazon.co.uk · captured 2026-09-15View at Amazon.co.uk

Captured periodically and may have changed.

Price history

30D90D180DAll
  • PRIME B650M-A II-CSM
August 24, 20265 capturestoday · £131.30

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

Specifications

Socket
AM5
Chipset
B650
Form factor
Micro-ATX
Memory type
DDR5
RAM slots
4
Max memory
192 GB
M.2 slots
2
PCIe x16 slots
1
PCIe version
4.0
SATA ports
4
LAN speed
2.5 GbE
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.