Is there a worthy video card upgrade to my Nvidia 9600 GT that won't require a new power supply then my existing Earthwatts 430W or break the bank ($150 tops, closer to $100 better)? I'm a pretty light gamer these days but am interested in the upcoming Duke Nukem Forever and wonder if the 9600 GT can cut it without turning off all the eye candy. Plus is even the 9600 GT Direct X 11 or does it need to be? Other system specs is Phenom II 945, 4 G memory and windows 7. I do have an Intel SSD as my primary drive.