Depends on how many GPUs are in the PC. Circa 2011 I had quad-Radeon 6970 machines pulling ~1000w each from 1200 watt power supplies, measured with a kill-a-wat

Depends on how many GPUs are in the PC. Circa 2011 I had quad-Radeon 6970 machines pulling ~1000w each from 1200 watt power supplies, measured with a kill-a-watt. Those machines ran 24/7 for at least 36 months before I had to start servicing stuff like GPU fans and heat sinks. This stuff can be designed NOT to melt the dang 12v rail