I just replaced my XPS8300 AMD HD6770 graphics card. Replaced it with an EVGA Geforce GTX 950 SC from MicroCenter. XPS has a 460W power supply, so I came out ahead on power consumption. AMD card was long, GTX is short. both use the 6pin power connector. replacement was easy. working thru the Nvidia experience thing was a little more than some YouTube installs show, but I was up and running with awesome graphics in about an hour start to finish. I probably could have gone to the GTX 960 highest card, but cost was a factor for me. just wanted more bang for few bucks and within power supply limits.