Overclock ATI Cards In Linux

[How-To] Overclocking ATI cards in Linux

Link goes to an article on Overclock.net.

tl;dr version:

$ aticonfig --od-enable
$ aticonfig --odsc <GPUspeed>,<MEMspeed>

For example, to overclock at 800 for gpu and 1000 for ram on chips 0 and 1:

$ aticonfig --odsc 800,1000 --adapter 0,1

Tip: Overclocking dual-GPU cards (e.g., ATI 5970) individually:

Use --adapter=0,1 for the first card, --adapter=2,3 for the second card, etc.

If using poclbm, you can use -d n instead of DISPLAY=:n.n.

Tip: To set fanspeed to 80:

$ aticonfig --pplib-cmd 'set fanspeed 0 80'