Compare 3 motherboards

Side-by-side comparison of 3 motherboards
Specification	ASUS ROG Strix B850-G Gaming WiFi AMD AM5 B850 mATX	ASUS B850M AYW GAMING OC WIFI7 W	MSI MAG B850M Mortar WiFi Motherboard
Price (new) (differs)	£309.73as of 22 Sep, 18:22	£316.99as of 22 Sep, 18:20	£298.35as of 22 Sep, 18:22
Amazon Warehouse offer	not stated	not stated	not stated
RRP (differs)	not stated	£316.99	not stated
Price badge	not stated	not stated	not stated
First available on Amazon (differs)	Jul 2025 (1 yr 2 mo old)	Mar 2026 (6 mo old)	Jun 2025 (1 yr 3 mo old)
Brand (differs)	ASUS	ASUS	MSI
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	not stated	4
Maximum RAM	not stated	not stated	not stated
Fastest RAM speed stated (differs)	not stated	not stated	8,200 MT/s
M.2 slots (differs)	4	3	3
Newest PCIe generation stated	PCIe 5.0	PCIe 5.0	PCIe 5.0
PCIe 5.0 graphics slot (differs)	Yes	not stated	Yes
PCIe 5.0 M.2 slot (differs)	Yes	not stated	Yes
WiFi	WiFi 7	WiFi 7	WiFi 7
Bluetooth (differs)	not stated	not stated	5.4
Wired LAN (differs)	2.5GbE	2.5GbE	5GbE
USB4 / Thunderbolt	not stated	not stated	not stated
Fastest USB-C port	20 Gbps	20 Gbps	20 Gbps
SATA ports	not stated	not stated	not stated
Power phases (as stated by the maker) (differs)	14+2+1	12+2+1	not stated
BIOS flashback (differs)	Yes	Yes	not stated
Debug LED / POST code (differs)	Yes	not stated	not stated
ARGB headers (differs)	Yes	Yes	not stated
Video outputs (differs)	HDMI, DisplayPort	HDMI, DisplayPort	not stated
Audio codec (differs)	ALC1220	not stated	not stated
Colour	not stated	not stated	not stated
Amazon sales rank (differs)	#332,410	#77,920	#117,517
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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