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Side-by-side comparison of 4 motherboards
SpecificationASUS ROG Strix B550-A Gaming AMD AM4 Zen 3 Ryzen 5000 & 3rd Gen…MSI MPG B550 GAMING PLUS Motherboard ATXMSI B550-A PRO Motherboard ATXMSI B550 GAMING WIFI Motherboard
Price (new) (differs)not stated£103.97as of 20 Sep, 06:20£89.99as of 20 Sep, 06:20£109.99as of 20 Sep, 06:20
Amazon Warehouse offer (differs)not stated£96.89 (Used - Like New)as of 20 Sep, 06:20not stated£94.99 (Used - Like New)as of 20 Sep, 06:20
RRP (differs)not stated£109.99£104.99£119.99
Price badge (differs)not statednot stated90-day lownot stated
First available on Amazon (differs)Aug 2020 (6 yr 1 mo old)Jun 2020 (6 yr 3 mo old)Jun 2020 (6 yr 3 mo old)Dec 2025 (9 mo old)
Brand (differs)ASUSMSIMSIMSI
SocketAM4AM4AM4AM4
ChipsetB550B550B550B550
Form factorATXATXATXATX
Memory typeDDR4DDR4DDR4DDR4
RAM slots (differs)not statednot statednot stated4
Maximum RAM (differs)not stated128 GB128 GBnot stated
Fastest RAM speed stated (differs)not stated4,400 MT/s4,400 MT/s4,400 MT/s
M.2 slots (differs)22not stated2
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 titleNone named in the listing titleNone named in the listing titleWiFi 5
Bluetooth (differs)not statednot statednot stated5.0
Wired LAN (differs)2.5GbEnot statednot stated1GbE
USB4 / Thunderboltnot statednot statednot statednot stated
Fastest USB-C port (differs)10 Gbpsnot statednot stated10 Gbps
SATA portsnot statednot statednot statednot stated
Power phases (as stated by the maker)not statednot statednot statednot stated
BIOS flashback (differs)Yesnot statedYesnot stated
Debug LED / POST codenot statednot statednot statednot stated
ARGB headers (differs)YesYesYesnot stated
Video outputs (differs)HDMI, DisplayPortnot statedHDMInot stated
Audio codecnot statednot statednot statednot stated
Colournot statednot statednot statednot stated
Amazon sales rank (differs)#204,084#1,256#1,256#1,256
BuySee it 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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