That's a good combo. I hope you got it. I got a 2gb 770 late last year and it rocks but now I've got a 4k screen and wish I'd bought the 4gig one.
Like Obnoxious said, you should overclock! I've had a 2500k running at 4.8 for over 2 years and it was like 1 mouse click on the bios of my asrock mobo on "one click overclocking". Too easy. OK, I did try a few slower clocks first but then the 4.8ghz one booted fine and I never changed it, except for when Crysis 2 was acting weird. The only time - everything else runs fine. You need a decent cooler though - I've got a cheap corsair h60 water cooler and it's perfect. Air cooling is fine so long as the cooler is known to do the job.