I was originally going to get a 7970 with an i7 3770k but I saw that the GTX 780's came out a couple days ago and I would LOVE to get one seeing the benchmarks on it. But a 780 with an i7 would kind of blow my sub $1500 budget and I would be missing out on the 4 free games from the 7970. Would an i5 work well with the GTX 780? I want to make my rig at least future proof for gaming for the next 2-3 years, thats why i wanted to get a 780. Thoughts?
I would definitely wait for Haswell. It's coming out so soon. Also, getting an i7 won't future proof yourself because by the time games really use more than 4 cores, the 3rd and 4th gen i7's will be outdated anyways.
Also, do you need compute performance? Are you ONLY playing games? Or are you doing other things? If you are going to be doing anything else such as folding or graphics design, get the 7970. If you are only playing games and are looking for something inbetween the 7970 and titan in performance, then get the 780.
Hasewell from what I read was a disappointments. People said it works great on Laptop but for PC its slightly increase from Ivy Bridge and hotter than the Ivy Bridge. So I would go with Ivy Bridge over Hasewell if you're not going for Laptop. That's just my opinions.
I think that the GTX 780 is still kind of pricey just for that GK110 chip although very nice but not exactly totally necessary for games at this time unless your like a big on the enthusiast side of things. I would recommend the GTX 770 roughly equal price to the 670 with the performance of a 680 with the 670s price its a no brainer! In my very honest opinion if I grew a little patience and just waited some months till the 700 series I would have gotten the 770 myself!