However,Gtx 680 is faster then the 670 at stock clocks and overcloced 670 vs. stock gtx 680 are at almost the same performance.If you have money to spend on gtx 680 without any problem then get otherwise get 670 which is best bang for the buck.I also agree with 'dudewitbow' but if you can afford 680 then why not buy it and then overclock it to get the hell out of it,I'm also purchasing this for my next build.So,you'd better go with gtx 680 if you have money to spend.
Best answer selected by hushinimi.
going to purchase a gtx 680 ! thank you everyone!!! I'm so... excited !!!