My GTX 770 seems to be underpeforming, I have just upgraded from a 650 ti but haven't really seem the jump in FPS that i expected.
I ran the Uniengine Valley benchmark and achieved a score of 1688, which i have been led to believe is low for this card.
Maybe!! cause your cpu is 4 years old!! right now the i5 4570/4670 is more powerful than yours even the amd fx 6xxx series is same or better than yours!! And your cpu is a quad core not a 8-core.... it has 4-core and 8-threads. And most of all intel doesn't have 8-core cpus... it has 2, 4, and 6-core cpus!!!