Basically I want to upgrade my computer so that I can play games like Witcher 2. One of my computers shortcoming is the woefully out of date power card I fitted it with a few years back, a geforce 9500 GT. Anyway, I was thinking of replacing this with a geforce GTX 570, will that be enough, or more than enough for witcher 2? Also I'm not too sure whether I need to update my divers or not and whether its possible given my PC which is a packardbell ixtreme.
I ran my comp through a 'can you run it' on system requirments lab and got this.