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Side-by-side comparison of 2 motherboards
SpecificationASUS PRIME B850M-A-CSMGIGABYTE B850M Eagle WIFI6E AMD AM5 Motherboard
Price (new) (differs)£144.98as of 20 Sep, 06:22£140.35as of 20 Sep, 06:22
Amazon Warehouse offernot statednot stated
RRP (differs)£377.99not stated
Price badge (differs)not stated90-day low
First available on Amazon (differs)Apr 2025 (1 yr 5 mo old)Jun 2025 (1 yr 3 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 statednot statednot stated
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 outputs (differs)HDMI, DisplayPortnot stated
Audio codecnot statednot stated
Colournot statednot stated
Amazon sales rank (differs)#13,264#55,990
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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