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Side-by-side comparison of 2 motherboards
SpecificationAsus B850M MAX GAMING WIFIASRock B850M Rock WiFi Socket AM5 Micro-ATX Motherboard
Price (new) (differs)£129.98as of 20 Sep, 02:42£132.85as of 20 Sep, 02:43
Amazon Warehouse offernot statednot stated
RRP (differs)£195.99£270.99
Price badgenot statednot stated
First available on Amazon (differs)May 2025 (1 yr 4 mo old)Jan 2026 (8 mo old)
Brand (differs)ASUSASRock
SocketAM5AM5
ChipsetB850B850
Form factorMicro-ATXMicro-ATX
Memory typeDDR5DDR5
RAM slots (differs)42
Maximum RAMnot statednot stated
Fastest RAM speed stated (differs)not stated8,200 MT/s
M.2 slots (differs)31
Newest PCIe generation statedPCIe 5.0PCIe 5.0
PCIe 5.0 graphics slot (differs)not statedYes
PCIe 5.0 M.2 slot (differs)not statedYes
WiFiWiFi 6EWiFi 6E
Bluetooth (differs)not stated5.3
Wired LAN (differs)not stated2.5GbE
USB4 / Thunderboltnot statednot stated
Fastest USB-C port (differs)10 Gbps5 Gbps
SATA ports (differs)not stated4
Power phases (as stated by the maker) (differs)not stated6+1+1
BIOS flashbacknot statednot stated
Debug LED / POST codenot statednot stated
ARGB headersnot statednot stated
Video outputsHDMI, DisplayPortHDMI, DisplayPort
Audio codecnot statednot stated
Colournot statednot stated
Amazon sales rank (differs)#14,478#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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