Originally Posted by KBcobra
DirectCU have vrm heatsink from the factory (thank god). Without them no way you can break 900mhz.
Couldn't remember if they did on the 460 models (they did on my 5850s). And yes, you can pass 900Mhz without them (on air). I have done so with MSI cyclones (1GB) which provided ample airflow over the VRMs as well as a reference 768MB model. They topped out around 925-930Mhz on air.