They dissipate it into the environment as heat iirc. https://en.m.wikipedia.org/wiki/Load_bank https://en.m.wikipedia.org/wiki/Load_bank So instead of a resis

They dissipate it into the environment as heat iirc. https://en.m.wikipedia.org/wiki/Load_bank https://en.m.wikipedia.org/wiki/Load_bank So instead of a resistor use old CPUs and GPU and mine.