Part type
Power supply
Turns wall power into clean DC for every part. Undersizing it causes crashes; a good unit runs quiet and leaves headroom for a GPU upgrade.
Power supply2023
Corsair RM850x
An 850 W Gold unit that will feed a 4080-class GPU without drama.
Power supply2022
Seasonic Focus GX-750
A quiet 750 W Gold — enough for 4070 Super / 7800 XT class cards.
Power supply2021
Corsair CX550
Fine for integrated-graphics office PCs and low-power GPUs. Not for a 4070.