http://www.tomshardware.com/reviews/gpu-hierarchy,4388.html http://www.tomshardware.com/reviews/gpu-hierarchy,4388.html puts the 275 in the same ballpark as the

http://www.tomshardware.com/reviews/gpu-hierarchy,4388.html http://www.tomshardware.com/reviews/gpu-hierarchy,4388.html puts the 275 in the same ballpark as the full 650, and the 650M has the same GK107 chip as the 650 but underclocked by 20-30%. So i think my money is on the 275 being faster.