For personal usage, does it matter though? In most places residential electricity is cheap compared to everything else. In a DC context I feel it matters a lot more compared to the capex.
When running inference workloads via something like llama.cpp, only 1 GPU is ever used at a time, so you would have 1 active GPU and 4 idle GPUs. That should make the power usage less insane in practice than you expect.
I think the last time any of my computers had a case was back when I realized the pair of 900gx2 cards I was running was turning my computer into an easy bake.
