Honestly. Because those interested and comparing are trying to see how well a specific GPU does paired with a specific CPU in a benchmark.

If GPU's/RAM/Chipset/OS is pretty much on par, the difference goes to show for the CPU in the bench. Pretty simple. That's the reason of the thread.

If you guys complaining want to just compare a CPU then 3DMark is the last app to do so and that's already been done too many times on this forum elswhere anyway. But those who compete in 3DMark scores all the time will be interested in regards Phenom/Core 2/Yorkfield in 2k1/2k5/2k6 and that's the reason and main audience of this thread.