Compare 4 motherboards

Side-by-side comparison of 4 motherboards
Specification	MSI MAG B850M Mortar WiFi Motherboard	MB ASUS PRO WS B850M-ACE SE	ASUS B850M AYW GAMING OC WIFI7 W	GIGABYTE B850M AORUS STEALTH Motherboard
Price (new) (differs)	£298.35as of 20 Sep, 06:22	£349.99as of 20 Sep, 06:22	£316.99as of 20 Sep, 06:22	£253.68as of 20 Sep, 06:22
Amazon Warehouse offer	not stated	not stated	not stated	not stated
RRP (differs)	not stated	£860.99	£316.99	not stated
Price badge	not stated	not stated	not stated	not stated
First available on Amazon (differs)	Jun 2025 (1 yr 3 mo old)	Nov 2025 (10 mo old)	Mar 2026 (6 mo old)	Jun 2026 (3 mo old)
Brand (differs)	MSI	ASUS	ASUS	Gigabyte
Socket	AM5	AM5	AM5	AM5
Chipset	B850	B850	B850	B850
Form factor	Micro-ATX	Micro-ATX	Micro-ATX	Micro-ATX
Memory type	DDR5	DDR5	DDR5	DDR5
RAM slots (differs)	4	not stated	not stated	not stated
Maximum RAM	not stated	not stated	not stated	not stated
Fastest RAM speed stated (differs)	8,200 MT/s	not stated	not stated	8,200 MT/s
M.2 slots (differs)	3	2	3	3
Newest PCIe generation stated	PCIe 5.0	PCIe 5.0	PCIe 5.0	PCIe 5.0
PCIe 5.0 graphics slot (differs)	Yes	not stated	not stated	not stated
PCIe 5.0 M.2 slot (differs)	Yes	Yes	not stated	not stated
WiFi (differs)	WiFi 7	None named in the listing title	WiFi 7	WiFi 7
Bluetooth (differs)	5.4	not stated	not stated	not stated
Wired LAN (differs)	5GbE	2.5GbE	2.5GbE	5GbE
USB4 / Thunderbolt	not stated	not stated	not stated	not stated
Fastest USB-C port (differs)	20 Gbps	20 Gbps	20 Gbps	not stated
SATA ports	not stated	not stated	not stated	not stated
Power phases (as stated by the maker) (differs)	not stated	not stated	12+2+1	8+2+2
BIOS flashback (differs)	not stated	not stated	Yes	not stated
Debug LED / POST code	not stated	not stated	not stated	not stated
ARGB headers (differs)	not stated	not stated	Yes	not stated
Video outputs (differs)	not stated	not stated	HDMI, DisplayPort	not stated
Audio codec	not stated	not stated	not stated	not stated
Colour	not stated	not stated	not stated	not stated
Amazon sales rank (differs)	#111,188	#29,833	#70,474	#107,705
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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