I found this useful, for Nvidia cards, lower power, run cooler

[Jackson Redstar]

I really don't mess with overclocking Im too chicken lol - but I came across this and sounded interesting - lower the wattage demand on the GPU and run a bit cooler. I followed along and at full load dropped the wattage down by about 50-60 watts and the temps dropped by almost 10 degrees while the FPS remained the same (I use valley benchmark). Now normally I FPS limit SL anyways, I know alot dont and even sometimes with FPS limit on in SL the GPU can still hit 90-100%