what your stance on the 680??
In some cases, 670 out performs 680.
You save $100 and with 700 pounds you could always go 670 SLI.
Which is extremely good.http://www.newegg.com/Product/Product.aspx?Item=N82E16814125423
3 fan GPU card, amazing and silent.
I plan to SLI 670 in the future if I experience too big of a frame drop when I get my 2560x1440 monitor. :P