Have the Dell XPS 420 computer and wanted to finally upgrade the Video card and figured I need to upgrade the low Power Supply too. Computer right now has: You Have: Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz You Have: GeForce 9800 GT Think Power Supply is 375 watt Windows 7 4gigs of Ram. Heard from others that my CPU will be a bottleneck for newer Video Cards so I honestly dont know where to start. Not sure how to figure if 1 video card is better than another one. And likely need a bigger powersupply to run whatever new video card I get too. And need to get something that will fit in my dell case. Just started playing Metro 2033 and playing it on High but course want to play it on Very High with any screen tear and slow down and of course other games as well.