Compare 4 motherboards

Side-by-side comparison of 4 motherboards
Specification	MB ASRock AMD AM5 B850 Pro-A WiFi	MB ASRock AMD AM5 B850 Pro RS	ASUS PRIME B850-PLUS-CSM	MSI PRO B850-S WIFI6E Motherboard
Price (new) (differs)	£147.92as of 5 Nov, 18:20	£150.14as of 5 Nov, 18:20	£161.99as of 5 Nov, 18:20	£152.65as of 5 Nov, 18:22
RRP (differs)	£336.99	£363.99	£161.99	not stated
First available on Amazon (differs)	Jan 2025 (1 yr 9 mo old)	Jan 2025 (1 yr 9 mo old)	Mar 2025 (1 yr 7 mo old)	Sep 2025 (1 yr 1 mo old)
Brand (differs)	ASRock	ASRock	ASUS	MSI
RAM slots (differs)	not stated	not stated	not stated	4
Fastest RAM speed stated (differs)	not stated	not stated	not stated	8,200 MT/s
M.2 slots (differs)	not stated	not stated	3	2
Newest PCIe generation stated (differs)	not stated	not stated	PCIe 5.0	PCIe 5.0
PCIe 5.0 M.2 slot (differs)	not stated	not stated	not stated	Yes
WiFi (differs)	Yes (generation not stated)	None named in the listing title	WiFi 6E	WiFi 6E
Bluetooth (differs)	not stated	not stated	not stated	5.3
Wired LAN (differs)	not stated	not stated	2.5GbE	2.5GbE
Fastest USB-C port (differs)	not stated	not stated	10 Gbps	10 Gbps
Power phases (as stated by the maker) (differs)	not stated	not stated	8+2+1	not stated
ARGB headers (differs)	not stated	not stated	Yes	not stated
Video outputs (differs)	not stated	not stated	HDMI, DisplayPort	not stated
Amazon sales rank (differs)	#31,519	#21,333	#9,626	#220,184
Buy	Check price on Amazon	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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