I have an older computer with a dual-core Pentium E6500 @2.93GHZ overclocked to 3.3GHZ and 8GB of ram. I bought a EVGA Geforce 750 ti and was hoping I can play World of Warcraft on med-high settings. I'm having to go below medium settings because my FPS is too low. The improvement over my 4-yr old ATI video card was minimal. Overclocking the cpu did help some. Will a better video card make any difference or is my cpu just too much of a bottleneck?