Compare 3 motherboards

Side-by-side comparison of 3 motherboards
Specification	ASUS Prime B850M-K Gaming Motherboard Socket AMD AM5	Asrock B850M-X R2.0 Amd B850 Am5 Micro Atx 2 Ddr5 Hdmi Dp 2.5G Lan…	ASUS PRIME B850M-F AMD AM5 Socket DDR5 8200MHz OC Supported mATX…
Price (new) (differs)	£109.99as of 5 Nov, 18:20	£104.94as of 5 Nov, 18:22	£108.99as of 5 Nov, 18:20
Amazon Warehouse offer	not stated	not stated	not stated
RRP (differs)	£199.99	£243.99	£129.99
Price badge (differs)	not stated	30-day low	not stated
First available on Amazon (differs)	Apr 2025 (1 yr 6 mo old)	Jun 2025 (1 yr 4 mo old)	Jan 2024 (2 yr 10 mo old)
Brand (differs)	ASUS	ASRock	ASUS
Socket	AM5	AM5	AM5
Chipset	B850	B850	B850
Form factor	Micro-ATX	Micro-ATX	Micro-ATX
Memory type	DDR5	DDR5	DDR5
RAM slots (differs)	not stated	2	not stated
Maximum RAM	not stated	not stated	not stated
Fastest RAM speed stated (differs)	not stated	8,200 MT/s	8,200 MT/s
M.2 slots (differs)	2	2	not stated
Newest PCIe generation stated (differs)	PCIe 5.0	PCIe 5.0	PCIe 4.0
PCIe 5.0 graphics slot (differs)	Yes	Yes	not stated
PCIe 5.0 M.2 slot (differs)	Yes	Yes	not stated
WiFi (differs)	None named in the listing title	WiFi 6E	None named in the listing title
Bluetooth	not stated	not stated	not stated
Wired LAN (differs)	2.5GbE	2.5GbE	not stated
USB4 / Thunderbolt	not stated	not stated	not stated
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)	8+2+1	6+1+1	not stated
BIOS flashback (differs)	Yes	not stated	not stated
Debug LED / POST code	not stated	not stated	not stated
ARGB headers (differs)	Yes	not stated	not stated
Video outputs (differs)	not stated	HDMI, DisplayPort	HDMI
Audio codec (differs)	not stated	ALC897	not stated
Colour	not stated	not stated	not stated
Amazon sales rank (differs)	#9,626	#58,771	#36,973
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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