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SpecificationB850M Challenger WiFi AM5 mATX HDMI/DPASRock B850M Challenger WiFi White Socket AM5 Micro-ATX Motherboard
Price (new) (differs)£136.11as of 20 Sep, 02:43£134.49as of 20 Sep, 02:43
Amazon Warehouse offernot statednot stated
RRP (differs)£311.99£255.99
Price badgenot statednot stated
First available on Amazon (differs)Feb 2026 (6 mo old)Jan 2026 (8 mo old)
BrandASRockASRock
SocketAM5AM5
ChipsetB850B850
Form factorMicro-ATXMicro-ATX
Memory typeDDR5DDR5
RAM slots44
Maximum RAMnot statednot stated
Fastest RAM speed stated8,000 MT/s8,000 MT/s
M.2 slotsnot statednot stated
Newest PCIe generation statedPCIe 5.0PCIe 5.0
PCIe 5.0 graphics slotYesYes
PCIe 5.0 M.2 slotYesYes
WiFiWiFi 7WiFi 7
Bluetooth5.45.4
Wired LAN2.5GbE2.5GbE
USB4 / Thunderboltnot statednot stated
Fastest USB-C portnot statednot stated
SATA portsnot statednot stated
Power phases (as stated by the maker)8+1+18+1+1
BIOS flashbacknot statednot stated
Debug LED / POST codenot statednot stated
ARGB headersnot statednot stated
Video outputs (differs)HDMI, DisplayPortnot stated
Audio codecALC897ALC897
Colour (differs)not statedWhite
Amazon sales rank#35,139#35,139
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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