Yeah I don't think it's really the CPU bottlenecking. You should try running the test on High instead of Performance, Performance doesn't use as much resolution or AA or AF so you'll stress the GPU harder with an H score.
That said, my crossfire 5850s can do P30k with an i5 750.
Ya my cpu is bottlenecking my card. If i put my CPU at 3200, i score 28k to 29k GPU,,put CPU at 3800, i score 31k to 32k. With same GPU glocks 900/1300.
Ya my cpu is bottlenecking my card. If i put my CPU at 3200, i score 28k to 29k GPU,,put CPU at 3800, i score 31k to 32k. With same GPU glocks 900/1300.
It might be because when you OC your CPU, you're also OCing other parts as you raise that FSB.