I tried out 3D vision 2 to see if it would take and am finding I pretty much love it and will continue using. Problem is my GTX580 doesnt cut it with the required 120 fps at 1920x1080. So am looking to upgrade but not go crazy, not into SLI or anything that advanced, so single card solution required. I want to upgrade just enough to be able to play 3D on my benq X2720t. Im a bit out of whack with the new range, would the 780 be over kill? My budget is around £400 if needed. Thanks for any advice.