I am in the process of putting together a build and only just remembered I need a PSU. I've always been stuck when it comes to picking them since I don't entirely understand what exactly I need. I feel like I tend to underestimate my usage requirements and then always have difficulty with USB components like hard drives that need to run off it.
I've run two calculators and one says 650W and the other 850W. I am leaning towards 850W since I would rather have more in case I keep adding drives.
The build so far
CPU: Ryzen 9 5900x
GPU: RTX 3070 vision
mobo: B550 vision
Drives: 2nvme, 3 SATA and potentially 3 external USB drives
RAM: 32gb 3200mhz
Ideally it would be quiet and somewhat cool.