rivatuner question

[laserbeam]

Hi,
I'm trying to use rivatuner 2.0 rc15.4 to overclock my 6800GT pci-e. Whatever I change the memory and/or core settings to don't seem to work,ie. I press test and it stays greyed out and nothing happens from there. BTW, the changes I'm attempting are very small. I'm trying for too big steps in clock rate.

Can someone tell me what I'm doing wrong and what I need to do to rectify things?

 

[laserbeam]

BTW, the video drivers I'm using are 66.93.

 

[kirbyrj]

I would use coolbits to overclock your card. It seems like it is a lot easier in my opinion.