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SpecificationMB ASRock AMD AM5 B850M Pro RSMSI PRO B850M-P WIFI MotherboardMSI PRO B850M-A WIFI PZ Motherboard
Price (new) (differs)not stated£137.99as of 20 Sep, 06:22£189.95as of 20 Sep, 06:22
Amazon Warehouse offernot statednot statednot stated
RRP (differs)£247.99£139.99£189.99
Price badgenot statednot statednot stated
First available on Amazon (differs)Jan 2025 (1 yr 8 mo old)Jun 2025 (1 yr 2 mo old)Oct 2025 (10 mo old)
Brand (differs)ASRockMSIMSI
SocketAM5AM5AM5
ChipsetB850B850B850
Form factorMicro-ATXMicro-ATXMicro-ATX
Memory typeDDR5DDR5DDR5
RAM slots444
Maximum RAMnot statednot statednot stated
Fastest RAM speed stated (differs)8,000 MT/s8,200 MT/s8,200 MT/s
M.2 slots (differs)132
Newest PCIe generation statedPCIe 5.0PCIe 5.0PCIe 5.0
PCIe 5.0 graphics slotYesYesYes
PCIe 5.0 M.2 slotYesYesYes
WiFi (differs)None named in the listing titleWiFi 7WiFi 7
Bluetooth (differs)not stated5.45.4
Wired LAN (differs)not stated5GbE5GbE
USB4 / Thunderboltnot statednot statednot stated
Fastest USB-C port (differs)not stated10 Gbps10 Gbps
SATA ports (differs)4not statednot stated
Power phases (as stated by the maker) (differs)8+2+1not statednot stated
BIOS flashback (differs)Yesnot statednot stated
Debug LED / POST codenot statednot statednot stated
ARGB headersnot statednot statednot stated
Video outputsnot statednot statednot stated
Audio codecnot statednot statednot stated
Colournot statednot statednot stated
Amazon sales rank (differs)#50,048#1,062#1,062
BuySee it 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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