As thread title. My wife's GTX570 in her Mac Pro 3,1 is dying. The screens pixelate & freeze frequently. I swapped it over with my GTX570 & the fault is definitely with the graphics card. She uses Premiere Pro so I need a replacement with good CUDA performance at a reasonable price. My choices are:- GTX570 - known quantity does the job & the cheapest option used. GTX680 - Reasonably priced. Can be flashed for boot screen. Runs cooler than the 570 but is CUDA performance as good? Can this card run 3 monitors? GTX??? - 660/670/760/770??? All reasonably priced but will any of these perform at least as well as the GTX570? There is absolutely zero interest in Bootcamp or Windows & she is gets a boot screen from the GT120 that runs her 3rd monitor.