I have the fx 8320. I overclocked it to what cpuz tells me is 4635 Mhz. I tried running minecraft and I get the same 60-120 fps. I also lag spike. Did I do something wrong? Do I add voltage or something? Can I possible be bottleneck by my gpu, hd5500? FYI it's at 1.368v, 8gb ram, 600w corsair gpu