i have looked at lots of tutorials about overclocking the GPU in a MBP, but has anyone here done it, how far have you pushed it, and did it perform much better? Im a casual gamer, but i like to get the most from my machine ( who doesnt).i used to overclock my old dell insprion 8500 and it done very well when overclocked. i want real life testamony though of how it works in the MBP.