I currently have a Palit GTX460 which I am happy enough with but wanted to lower temperatures and noise so bought a Gelid graphics cooler, before realising it would not fit my make of card. I can't return the cooler as I had already modified one of the heatsinks before realising it wouldn't fit, so thought this would be a good excuse to upgrade. I have narrowed the choice to AMD 5870 (still expensive despite an older design) or 6950 1Gb (better value I think) or go Nvidia with a GTX 560Ti 1Gb ( cheaper again with excellent reviews). Having read a magazine article recently, however, I am now wondering if what they suggest, that the Nvidia cards do not work as well with AMD CPU's, means I would be better off going for a matched graphics card. I am also concerned that my B50 X4 (core unlocked Phenom X2 550BE) CPU would simply bottleneck these faster graphics cards. Any thoughts and suggestions would be appreciated.