Sat Apr 30, 2022 8:50 am
The 620W should work fine as long as you aren't trying to drive a bunch of HDDs or do some crazy overclocking. 750W would certainly give you a lot more breathing space though. Modern GPUs only drink tons of power when they are being fully utilized. Ampere is an efficient architecture that pulls significant power when the RTX cores being used hard. RDNA2 is more efficient but it has inferior RT performance. I'm continued to be impressed by my 6900XT's efficiency.
Gigabyte X670 AORUS-ELITE AX, Raphael 7950X, 2x16GiB of G.Skill TRIDENT DDR5-5600, Sapphire RX 6900XT, Seasonic GX-850 and Fractal Define 7 (W)
Ivy Bridge 3570K, 2x4GiB of G.Skill RIPSAW DDR3-1600, Gigabyte Z77X-UD3H, Corsair CX-750M V2, and PC-7B