Hi. On a splurge I went and bought a EVGA Nvidia GTX 960, FTW. I actually fit into my old Dell Studio Slim 540s. (with the side off.) I turned it on and it worked! I then tried to play games and I can run them a ultra settings but I then hit like a "wall" where the FPS drops to single digits. It also drops to single digit FPS in 2D benchmarking I'm guessing it's the MOBO. Just wondering if I'm correct. I can't find what version PCI Express it is which leads me to believe it's 1.0. So Sad. Sounds correct? Really old Dell Mobo bottlenecing a 2015 GPU?