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Compare 4 motherboards

Side-by-side comparison of 4 motherboards
SpecificationASUS PRIME B550M-AMSI PRO B550M-P WIFI6E MotherboardASUS PRIME B550M-A WIFI IIASUS Prime B550M-A/CSM AMD AM4
Price (new) (differs)£85.68as of 5 Nov, 18:21£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)not stated£82.72 (Used - Like New)as of 5 Nov, 18:22not statednot stated
RRP (differs)£93.86£89.99£130.99not stated
Price badge (differs)not statedLowest we've recordednot statednot stated
First available on Amazon (differs)Jan 2022 (4 yr 10 mo old)Jun 2026 (4 mo old)Dec 2021 (4 yr 11 mo old)Jun 2020 (6 yr 4 mo old)
Brand (differs)ASUSMSIASUSASUS
SocketAM4AM4AM4AM4
ChipsetB550B550B550B550
Form factorMicro-ATXMicro-ATXMicro-ATXMicro-ATX
Memory typeDDR4DDR4DDR4DDR4
RAM slots (differs)not stated44not stated
Maximum RAMnot statednot statednot statednot stated
Fastest RAM speed stated (differs)not stated4,400 MT/snot statednot stated
M.2 slots (differs)222not stated
Newest PCIe generation statedPCIe 4.0PCIe 4.0PCIe 4.0PCIe 4.0
PCIe 5.0 graphics slotnot statednot statednot statednot stated
PCIe 5.0 M.2 slotnot statednot statednot statednot stated
WiFi (differs)None named in the listing titleWiFi 6EWiFi 6None named in the listing title
Bluetooth (differs)not stated5.3not statednot stated
Wired LAN1GbE1GbE1GbE1GbE
USB4 / Thunderboltnot statednot statednot statednot stated
Fastest USB-C port (differs)not statednot statednot stated10 Gbps
SATA portsnot statednot statednot statednot stated
Power phases (as stated by the maker)not statednot statednot statednot stated
BIOS flashbacknot statednot statednot statednot stated
Debug LED / POST codenot statednot statednot statednot stated
ARGB headers (differs)Yesnot statedYesnot stated
Video outputs (differs)not statednot statedHDMIHDMI
Audio codecnot statednot statednot statednot stated
Colournot statednot statednot statednot stated
Amazon sales rank (differs)#1,641#1,268#1,641#172,396
BuyCheck price on AmazonCheck 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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