Compare 3 motherboards

Side-by-side comparison of 3 motherboards
Specification	MSI PRO B850M-P WiFi Motherboard	ASUS PRIME B850M-A-CSM	B850M Challenger AM5 mATX HDMI/DP
Price (new) (differs)	£143.94as of 20 Sep, 06:22	£144.98as of 20 Sep, 06:22	£142.23as of 20 Sep, 06:22
RRP (differs)	not stated	£377.99	not stated
Price badge (differs)	90-day low	not stated	not stated
First available on Amazon (differs)	May 2025 (1 yr 4 mo old)	Apr 2025 (1 yr 5 mo old)	Feb 2026 (6 mo old)
Brand (differs)	MSI	ASUS	ASRock
RAM slots (differs)	4	not stated	4
Fastest RAM speed stated (differs)	8,200 MT/s	not stated	8,000 MT/s
M.2 slots (differs)	3	3	not stated
PCIe 5.0 graphics slot (differs)	Yes	not stated	Yes
PCIe 5.0 M.2 slot (differs)	Yes	not stated	Yes
WiFi (differs)	WiFi 7	None named in the listing title	None named in the listing title
Bluetooth (differs)	5.4	not stated	not stated
Wired LAN (differs)	5GbE	2.5GbE	2.5GbE
Fastest USB-C port (differs)	10 Gbps	5 Gbps	5 Gbps
SATA ports (differs)	not stated	not stated	4
Power phases (as stated by the maker) (differs)	not stated	not stated	8+1+1
BIOS flashback (differs)	not stated	Yes	not stated
ARGB headers (differs)	not stated	Yes	not stated
Video outputs (differs)	not stated	HDMI, DisplayPort	HDMI, DisplayPort
Audio codec (differs)	not stated	not stated	ALC897
Amazon sales rank (differs)	#153,588	#13,264	#36,335
Buy	Check price on Amazon	Check price on Amazon	Check price on Amazon

Highlighted rows differ between these boards. “Not stated” means the Amazon listing does not mention it: the board may still have it, so check the maker’s specification. Power phases are printed as stated by the maker and are not comparable between brands. Prices are the new price on Amazon.co.uk at the time shown; the price on Amazon when you buy is the one that applies.

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