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Side-by-side comparison of 2 motherboards
SpecificationASUS PRIME B850M-A-CSMGIGABYTE B850M EAGLE WIFI6E Motherboard
Price (new) (differs)£144.98as of 20 Sep, 06:22£150.13as of 20 Sep, 06:22
Amazon Warehouse offer (differs)not stated£132.41 (Used - Like New)as of 20 Sep, 06:22
RRP (differs)£377.99£149.99
Price badgenot statednot stated
First available on Amazon (differs)Apr 2025 (1 yr 5 mo old)Oct 2025 (11 mo old)
Brand (differs)ASUSGigabyte
SocketAM5AM5
ChipsetB850B850
Form factorMicro-ATXMicro-ATX
Memory typeDDR5DDR5
RAM slots (differs)not stated4
Maximum RAMnot statednot stated
Fastest RAM speed stated (differs)not stated8,200 MT/s
M.2 slots (differs)32
Newest PCIe generation statedPCIe 5.0PCIe 5.0
PCIe 5.0 graphics slotnot statednot stated
PCIe 5.0 M.2 slotnot statednot stated
WiFi (differs)None named in the listing titleWiFi 6E
Bluetoothnot statednot stated
Wired LAN2.5GbE2.5GbE
USB4 / Thunderboltnot statednot stated
Fastest USB-C port (differs)5 Gbpsnot stated
SATA portsnot statednot stated
Power phases (as stated by the maker) (differs)not stated8+2+2
BIOS flashback (differs)Yesnot stated
Debug LED / POST codenot statednot stated
ARGB headers (differs)Yesnot stated
Video outputsHDMI, DisplayPortHDMI, DisplayPort
Audio codecnot statednot stated
Colournot statednot stated
Amazon sales rank (differs)#13,264#72,876
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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