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Side-by-side comparison of 2 motherboards
SpecificationASUS PRIME B650M-A II-CSMASRock B650M Pro X3D WiFi 6E AMD AM5 Micro-ATX Motherboard
Price (new) (differs)£169.63as of 20 Sep, 06:21£170.71as of 20 Sep, 06:22
Amazon Warehouse offernot statednot stated
RRPnot statednot stated
Price badge (differs)not stated90-day low
First available on Amazon (differs)Jun 2023 (3 yr 2 mo old)Jun 2025 (1 yr 3 mo old)
Brand (differs)ASUSASRock
SocketAM5AM5
ChipsetB650B650
Form factorMicro-ATXMicro-ATX
Memory typeDDR5DDR5
RAM slots (differs)not stated4
Maximum RAMnot statednot stated
Fastest RAM speed stated (differs)not stated8,000 MT/s
M.2 slots (differs)not stated3
Newest PCIe generation statedPCIe 5.0PCIe 5.0
PCIe 5.0 graphics slot (differs)not statedYes
PCIe 5.0 M.2 slotYesYes
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 Gbps10 Gbps
SATA ports (differs)not stated4
Power phases (as stated by the maker) (differs)not stated8+2+1
BIOS flashback (differs)not statedYes
Debug LED / POST codenot statednot stated
ARGB headersnot statednot stated
Video outputs (differs)not statedHDMI, DisplayPort
Audio codec (differs)not statedALC897
Colournot statednot stated
Amazon sales rank (differs)#121,599#223,032
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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