Compare 3 motherboards

Side-by-side comparison of 3 motherboards
Specification	ASRock B850M Challenger WiFi White Socket AM5 Micro-ATX Motherboard	MSI PRO B850M-P WIFI Motherboard	ASRock B850M Rock WiFi Socket AM5 Micro-ATX Motherboard
Price (new) (differs)	£134.49as of 20 Sep, 06:22	£137.99as of 20 Sep, 06:22	£132.85as of 20 Sep, 06:22
Amazon Warehouse offer	not stated	not stated	not stated
RRP (differs)	£255.99	£139.99	£270.99
Price badge	not stated	not stated	not stated
First available on Amazon (differs)	Jan 2026 (8 mo old)	Jun 2025 (1 yr 2 mo old)	Jan 2026 (8 mo old)
Brand (differs)	ASRock	MSI	ASRock
Socket	AM5	AM5	AM5
Chipset	B850	B850	B850
Form factor	Micro-ATX	Micro-ATX	Micro-ATX
Memory type	DDR5	DDR5	DDR5
RAM slots (differs)	4	4	2
Maximum RAM	not stated	not stated	not stated
Fastest RAM speed stated (differs)	8,000 MT/s	8,200 MT/s	8,200 MT/s
M.2 slots (differs)	not stated	3	1
Newest PCIe generation stated	PCIe 5.0	PCIe 5.0	PCIe 5.0
PCIe 5.0 graphics slot	Yes	Yes	Yes
PCIe 5.0 M.2 slot	Yes	Yes	Yes
WiFi (differs)	WiFi 7	WiFi 7	WiFi 6E
Bluetooth (differs)	5.4	5.4	5.3
Wired LAN (differs)	2.5GbE	5GbE	2.5GbE
USB4 / Thunderbolt	not stated	not stated	not stated
Fastest USB-C port (differs)	not stated	10 Gbps	5 Gbps
SATA ports (differs)	not stated	not stated	4
Power phases (as stated by the maker) (differs)	8+1+1	not stated	6+1+1
BIOS flashback	not stated	not stated	not stated
Debug LED / POST code	not stated	not stated	not stated
ARGB headers	not stated	not stated	not stated
Video outputs (differs)	not stated	not stated	HDMI, DisplayPort
Audio codec (differs)	ALC897	not stated	not stated
Colour (differs)	White	not stated	not stated
Amazon sales rank (differs)	#36,335	#1,062	#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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