I wasnet interested in the TPAA feature in the GF7 series until i experianced it in SC:CT.
yep i made some screenshot comparsions with the framerate there as well to compare the performance hit.
the screenshots compare no TPAA to supersampled
TPAA. (4xAA used)
notice how in the second scene the TPAA was pretty much performance free while a considrable amount of the alpha texture jaggies of the steel on the hallway floor has gone!!