I recently upgraded to a EVGA GTX 980 ti. I previously had a AMD 7970 but after I installed the drivers I get lower FPS in my games. Also, I have noticed that my computer is a bit choppy and laggy as well. I tried to remove the old amd gpu drivers by using a tool called DDU but it did not fix the issue. The card works, I have my monitor connected directly to my GPU and the card shows up on the device manager but I am still am getting poor FPS performance. I dont know what to do other than wipe my hard drive in order to get rid of any drivers that may be conflicting with the GPU. I have a i5-4690 and ddr 3 8 gb ram. My psu is 700W. I dont know if my specs could be an issue but I really doubt it.