Using NVIDIA’s latest system utility, we managed to hit some pretty impressive speeds when OC’ing the GTX 280 and GTX 260. Our GTX 280 topped out at 754MHz core, 1.32GHz memory, and 1559MHz for the stream processors!! Meanwhile we were able to hit speeds of 712MHz core, 1.151GHz memory, and 1.483GHz for the GTX 260’s shaders. What kind of performance improvement does that equate to in games? Have a look: