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Side-by-side comparison of 2 motherboards
SpecificationASUS PRIME B550-PLUSGigabyte B550 UD AC
Price (new) (differs)£109.75as of 5 Nov, 18:21£110.08as of 5 Nov, 18:20
Amazon Warehouse offernot statednot stated
RRP (differs)£124.56not stated
Price badgenot statednot stated
First available on Amazon (differs)Jan 2022 (4 yr 10 mo old)Feb 2023 (3 yr 9 mo old)
Brand (differs)ASUSGigabyte
SocketAM4AM4
ChipsetB550B550
Form factorATXATX
Memory typeDDR4DDR4
RAM slots (differs)not stated4
Maximum RAMnot statednot stated
Fastest RAM speed statednot statednot stated
M.2 slots22
Newest PCIe generation statedPCIe 4.0PCIe 4.0
PCIe 5.0 graphics slotnot statednot stated
PCIe 5.0 M.2 slotnot statednot stated
WiFi (differs)None named in the listing titleYes (generation not stated)
Bluetoothnot statednot stated
Wired LAN1GbE1GbE
USB4 / Thunderboltnot statednot stated
Fastest USB-C port (differs)10 Gbpsnot stated
SATA portsnot statednot stated
Power phases (as stated by the maker) (differs)not stated10+3
BIOS flashback (differs)not statedYes
Debug LED / POST codenot statednot stated
ARGB headersYesYes
Video outputs (differs)not statedHDMI
Audio codecnot statednot stated
Colournot statednot stated
Amazon sales rank (differs)#1,641#8,291
BuyCheck 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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