Originally Posted by W1zzard
ati's oc tool, ccc and winclk all change the memory timings depending on core clock .. and they relax them BIG TIME in order to achieve those huge overclocks you were seeing .. however performance lacks severly .. i think the high opengl scores are possible because this benchmark is more dependant on raw clock speed.
please note that once you use any of the ati oc tools during a session your timings are relaxed, using atitool after that you still have the relaxed timings .. atitool never touches them