http://www.techspot.com/review/670-m...t-performance/

Looks like fears of nVidia bias due to TWIMTBP are unfounded, as equivalent cards between AMD and nVidia perform very similarly. Turning up the settings does put meaningful load on GPUs and getting a 7970 or 680 does make a difference. As far as CPU scaling goes, it seems to be thread/core dependant rather than speed. AMD chips with 6+ cores are enough not to be limiting, likewise Intel with 4 threads.