I've been shopping around for a new GPU to replace my 560ti, and I've decided between the 660ti or the 670. The 660ti has a 40 dollar promotion reducing its total price to 280 INCLUDING tax. The 670 on the other hand, its total price is 380, a one hundred dollar difference! I only play on 1080p. My question is, is that 100 dollar justified by the performance boost!? The only reason why I'm not pulling the trigger on the 660ti right now is because of what I've read about its bandwidth being really limited compared to that of the 670.