ATI 6970 Won't run at Full MHz??

[wilburnator]

Originally Posted by Baron

One cause could be that they under clock/throttle back due to overheat?


Every card is different, even from the same series and manufacturer.

Except that that isn't the problem. The card hasn't had the opportunity to heat up, it idles down at game start. I've checked every 3d game I have installed and none of them cause this aside from CloD.

Before I launch the game GPU-Z has my core clock at 400 mhz and memory at 1250 mhz. At launch the core stays at 400 and the memory drops to 900. CCC will not force 3d clock speeds, (not mine, anyway. Cat 11.3) so I forced them with ATI Tray Tools. With the core at 850 and the memory at 1250, suddenly the game is quite playable. There is no overheating. Without the proper speeds set, game play is jittery and slow.

This seems to be an issue with CloD and ATI, although I read on here somewhere that at least one guy with a GTX 580 was having this trouble too.