I bought a gtx 980 and I don't have the fps that I should, if I have things in ultra in borderlands I have an average of 45 fps, in battlefield 3 the fps are right, I have an average of 100 fps, on gta v I have 55fps and in general if I have things in ultra I usually have 50/55 fps. I don't know what is the problem, first I thought that it was a problem of the video card but when I went to the store I bought it they gave me a new one and the frame rates are the same ones, I have all the drivers updated, the specs are down below, thanks for reading and for asnwering!
Specs
i7 3770
ssd 240gb
16gb RAM
gtx 980
850w power supply
gigabyte ga-h61m-s1