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Compare 3 motherboards

Side-by-side comparison of 3 motherboards
SpecificationMSI PRO B550M-P WIFI6E MotherboardASUS PRIME B550M-A WIFI IIASUS Prime B550M-A/CSM AMD AM4
Price (new) (differs)£89.99as of 5 Nov, 18:22£89.99as of 5 Nov, 18:21£89.54as of 5 Nov, 18:22
Amazon Warehouse offer (differs)£82.72 (Used - Like New)as of 5 Nov, 18:22not statednot stated
RRP (differs)£89.99£130.99not stated
Price badge (differs)Lowest we've recordednot statednot stated
First available on Amazon (differs)Jun 2026 (4 mo old)Dec 2021 (4 yr 11 mo old)Jun 2020 (6 yr 4 mo old)
Brand (differs)MSIASUSASUS
SocketAM4AM4AM4
ChipsetB550B550B550
Form factorMicro-ATXMicro-ATXMicro-ATX
Memory typeDDR4DDR4DDR4
RAM slots (differs)44not stated
Maximum RAMnot statednot statednot stated
Fastest RAM speed stated (differs)4,400 MT/snot statednot stated
M.2 slots (differs)22not stated
Newest PCIe generation statedPCIe 4.0PCIe 4.0PCIe 4.0
PCIe 5.0 graphics slotnot statednot statednot stated
PCIe 5.0 M.2 slotnot statednot statednot stated
WiFi (differs)WiFi 6EWiFi 6None named in the listing title
Bluetooth (differs)5.3not statednot stated
Wired LAN1GbE1GbE1GbE
USB4 / Thunderboltnot statednot statednot stated
Fastest USB-C port (differs)not statednot stated10 Gbps
SATA portsnot statednot statednot stated
Power phases (as stated by the maker)not statednot statednot stated
BIOS flashbacknot statednot statednot stated
Debug LED / POST codenot statednot statednot stated
ARGB headers (differs)not statedYesnot stated
Video outputs (differs)not statedHDMIHDMI
Audio codecnot statednot statednot stated
Colournot statednot statednot stated
Amazon sales rank (differs)#1,268#1,641#172,396
BuyCheck price on AmazonCheck price on AmazonCheck 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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