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SpecificationASRock B850M Challenger WiFi White Socket AM5 Micro-ATX MotherboardASUS TUF GAMING B850M-PLUS WIFI AMD mATX motherboard
Price (new) (differs)£176.54as of 5 Nov, 18:22£195.00as of 5 Nov, 18:22
Amazon Warehouse offernot statednot stated
RRP (differs)£255.99£282.75
Price badgenot statednot stated
First available on Amazon (differs)Jan 2026 (9 mo old)Jan 2025 (1 yr 9 mo old)
Brand (differs)ASRockASUS
SocketAM5AM5
ChipsetB850B850
Form factorMicro-ATXMicro-ATX
Memory typeDDR5DDR5
RAM slots (differs)4not stated
Maximum RAMnot statednot stated
Fastest RAM speed stated (differs)8,000 MT/snot stated
M.2 slots (differs)not stated3
Newest PCIe generation statedPCIe 5.0PCIe 5.0
PCIe 5.0 graphics slotYesYes
PCIe 5.0 M.2 slotYesYes
WiFi (differs)WiFi 7WiFi 6E
Bluetooth (differs)5.4not stated
Wired LAN2.5GbE2.5GbE
USB4 / Thunderboltnot statednot stated
Fastest USB-C port (differs)not stated20 Gbps
SATA portsnot statednot stated
Power phases (as stated by the maker) (differs)8+1+114+2+1
BIOS flashback (differs)not statedYes
Debug LED / POST code (differs)not statedYes
ARGB headers (differs)not statedYes
Video outputs (differs)not statedHDMI, DisplayPort
Audio codec (differs)ALC897not stated
Colour (differs)Whitenot stated
Amazon sales rank (differs)#50,419#1,416
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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