Suicide runs (no stability tests) 'd be pointless as most of the modern cards have separate 2D and 3D clocks - so you can set 2000/2000 for 3D mode on whatever card you own - run GPUz in 2D mode - GPUz 'll read 2000/2000 - you have #1 spot
stupid
if we're talking about "benchable" rankings - best way to combine GPU/MEM clocks without separating the categories is a bench that is 100% GFX dependant
Sadly, 01 nature isn't such anymore - with 9800GX2 cards you have a heavy CPU bottleneck there