First why I want to upgrade: I got a Mac 4,1 8 core 32GB RAM with GTX 570 + GT 120 now to power 3 displays. My issue is on 10.8 randomly my system will crash and restart. I reported the issue each time, but I decided to do some investigating to see if the issue is with the 570, 120, both in a weird combo, etc. It also seem to crash when playing a lot of videos on all monitors at once esp with flash. It also seem to crash when playing video or flash video off the 3rd monitor hooked up to the GPU of the 2nd 16x PCIe (anything that is not on the 1st PCIe 16x) I found: 1x GT 120 in 1st 16X PCIe -- no crash 1x GT 120 in 1st and 2nd 16X PCIE -- crash with a lot of flash running -- only crashes if I play videos hanging off the display hooked to the second CPU 1x GTX 570 in 1st 16X -- no crash GTX 570 in 1st PCIe and GT 120. Crash when video is playing off GT 120. GTX 570 in 1st PCIe and GT 620. Crash when video is playing off GT 620. GTX 570 in 1st PCIe and GTX 650. Crash when video is playing off GT 650. GT 120 in 1st PCIe and GT 120. Crash when video is playing off GT 120. I don't have the resource to run more scenario testing, BUT i found that the issue is triggered either on an second GPU and related to flash. Going off a hunch, I was thinking I can resolve this annoying issue with a single GPU solution that can support 3x displays. Unfortunately the flashed GTX 570 only supports 2 displays. So, I am eyeing: EVGA GTX 680 and Sapphire 7950 The difference in price isn't the huge factor here if there are stability differences. If both are equally stable (hopefully resolve the random crash when Flash is playing). I don't game on the Mac (I got a PC to do this)... so I'm trying to figure out which card would be a better and more stable fit to power 3 displays and not randomly crash on me when I visit sites that has heavy flash like IGN. Anyone out there has any of these cards powering 3 or more monitors without issues??