Compare 4 motherboards

Side-by-side comparison of 4 motherboards
Specification	ASUS PRO B550M-C/CSM Business Motherboard Socket AM4	GIGABYTE B550M DS3H AC R2 AMD AM4 Motherboard	ASUS Prime B550M-A AMD Ryzen AM4 Micro ATX Motherboard	ASUS PRIME B550M-K WIFI
Price (new) (differs)	£106.39as of 5 Nov, 18:20	£107.41as of 5 Nov, 18:20	£105.35as of 5 Nov, 18:20	£104.99as of 5 Nov, 18:22
Amazon Warehouse offer	not stated	not stated	not stated	not stated
RRP (differs)	£143.99	not stated	not stated	not stated
Price badge (differs)	not stated	not stated	not stated	Lowest we've recorded
First available on Amazon (differs)	Jan 2021 (5 yr 10 mo old)	Jun 2025 (1 yr 4 mo old)	Jan 2022 (4 yr 10 mo old)	Jun 2026 (5 mo old)
Brand (differs)	ASUS	Gigabyte	ASUS	ASUS
Socket	AM4	AM4	AM4	AM4
Chipset	B550	B550	B550	B550
Form factor	Micro-ATX	Micro-ATX	Micro-ATX	Micro-ATX
Memory type	DDR4	DDR4	DDR4	DDR4
RAM slots (differs)	not stated	4	not stated	not stated
Maximum RAM	not stated	not stated	not stated	not stated
Fastest RAM speed stated	not stated	not stated	not stated	not stated
M.2 slots (differs)	2	2	2	not stated
Newest PCIe generation stated	PCIe 4.0	PCIe 4.0	PCIe 4.0	PCIe 4.0
PCIe 5.0 graphics slot	not stated	not stated	not stated	not stated
PCIe 5.0 M.2 slot	not stated	not stated	not stated	not stated
WiFi (differs)	None named in the listing title	WiFi 5	None named in the listing title	WiFi 6
Bluetooth	not stated	not stated	not stated	not stated
Wired LAN (differs)	2.5GbE	1GbE	1GbE	not stated
USB4 / Thunderbolt	not stated	not stated	not stated	not stated
Fastest USB-C port (differs)	10 Gbps	not stated	not stated	not stated
SATA ports	not stated	not stated	not stated	not stated
Power phases (as stated by the maker) (differs)	not stated	5+3	not stated	not stated
BIOS flashback	not stated	not stated	not stated	not stated
Debug LED / POST code (differs)	not stated	not stated	not stated	Yes
ARGB headers (differs)	not stated	not stated	Yes	Yes
Video outputs (differs)	HDMI, DisplayPort	HDMI, DisplayPort	HDMI	HDMI, DisplayPort
Audio codec	not stated	not stated	not stated	not stated
Colour (differs)	not stated	not stated	not stated	Black
Amazon sales rank (differs)	#225,157	#58,204	#157,270	#1,641
Buy	Check price on Amazon	Check price on Amazon	Check price on Amazon	Check 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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