Stealth117 :
Same could be said about the 670 also its only 10-15% faster but costs 30% more than a 660 ti
Sure, but it's the difference between maxxing games and not.
People know that the higher-end cards represent worse value; if they didn't, the 640 would be practically free. That being said, the 680 is an absolutely pointless buy, because there is very very little it can do that the 670 can't. The 660ti has some memory bandwidth issues and isn't as strong of a card overall as the 670.
Yes, we could use reductive logic to say that a 650ti is the best buy for everyone because it's the best value, but that wasn't my point - my point is that the 680 is a pointless buy.