Compare 3 motherboards

Side-by-side comparison of 3 motherboards

Specification	ASUS Prime B550M-K AMD B550	MSI PRO B550M-B Motherboard	Gigabyte B550M DS3H R2 Motherboard
Price (new) (differs)	£84.41as of 5 Nov, 18:21	£81.19as of 5 Nov, 18:22	£79.99as of 5 Nov, 18:23
RRP (differs)	£134.99	£74.99	£179.99
Price badge (differs)	not stated	not stated	30-day low
First available on Amazon (differs)	Jan 2022 (4 yr 10 mo old)	Jun 2026 (4 mo old)	Apr 2025 (1 yr 6 mo old)
Brand (differs)	ASUS	MSI	Gigabyte
RAM slots (differs)	not stated	2	4
Fastest RAM speed stated (differs)	4,400 MT/s	4,600 MT/s	4,733 MT/s
Power phases (as stated by the maker) (differs)	not stated	not stated	5+3
Video outputs (differs)	HDMI	not stated	HDMI, DisplayPort
Amazon sales rank (differs)	#1,641	#6,175	#1,849
Buy	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.

• Remove ASUS Prime B550M-K AMD B550
• Remove MSI PRO B550M-B Motherboard
• Remove Gigabyte B550M DS3H R2 Motherboard

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