Ok so I already have a 6600gt. Would it be better for me to pick up a second 6600gt or just get a 7600gt. Which would get better performance? If the 7600gt is better than two 6600gt's...is it worth paying the extra $60(ish) for the 7600gt?
The 7600 GT will be better because no games really utilize SLI's fell potential. You don't gain double the power when you SLI only about 10 to 30 percent more than one 6600 GT.