Compare 3 motherboards

Side-by-side comparison of 3 motherboards
Specification	ASUS PRIME B850M-A-CSM	B850M Challenger AM5 mATX HDMI/DP	GIGABYTE B850M Gaming X WIFI6E AMD AM5 LGA 1718 Motherboard
Price (new) (differs)	£144.98as of 20 Sep, 06:22	£142.23as of 20 Sep, 06:22	£149.10as of 20 Sep, 06:21
RRP (differs)	£377.99	not stated	not stated
Price badge (differs)	not stated	not stated	90-day low
First available on Amazon (differs)	Apr 2025 (1 yr 5 mo old)	Feb 2026 (6 mo old)	Jan 2025 (1 yr 8 mo old)
Brand (differs)	ASUS	ASRock	Gigabyte
RAM slots (differs)	not stated	4	4
Fastest RAM speed stated (differs)	not stated	8,000 MT/s	not stated
M.2 slots (differs)	3	not stated	2
PCIe 5.0 graphics slot (differs)	not stated	Yes	not stated
PCIe 5.0 M.2 slot (differs)	not stated	Yes	not stated
WiFi (differs)	None named in the listing title	None named in the listing title	WiFi 6E
Fastest USB-C port (differs)	5 Gbps	5 Gbps	not stated
SATA ports (differs)	not stated	4	not stated
Power phases (as stated by the maker) (differs)	not stated	8+1+1	10+2+2
BIOS flashback (differs)	Yes	not stated	not stated
ARGB headers (differs)	Yes	not stated	not stated
Video outputs (differs)	HDMI, DisplayPort	HDMI, DisplayPort	not stated
Audio codec (differs)	not stated	ALC897	not stated
Amazon sales rank (differs)	#13,264	#36,335	#69,561
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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