Ok so I had a bad experience with the 560 gtx, now I am going to try gtx 295. I know its possible people have done it without messing with it. Can anybody give me any tips to help it run smoothly. Offer some words of wisdom? anyone done this? I also heard with lion 10.7.5 all the nvidia drivers are preinstalled, so do I need to install anything? ps. I know I should get a native apple graphics card, but they are so expensive and so crappy for the money, I did various comparisons on hwcompare.com and the old gtx 295 seemed pretty good and is relatively cheap, so thought I'd give it go.