[Hercuros]

It’s not just about the energy usage, but also purchase cost of the GPUs and opportunity cost of not using those GPUs for something more valuable (after you have bought them). Especially if you’re doing this at large scale and not just on a single desktop machine.

Of course you were already saying it’s not a good idea, but I think the above definitely plays a role at scale as well.

[SlightlyLeftPad]

You’re right, I could be trying to get Crysis to run at 120 fps.

[tmtvl]

If you have spare GPU time you could donate it to projects like Folding@Home.