I have Game Booster, but I never did notice any difference. I think its more in depth on how the computer uses its memory and using Game Booster, disables certain services or programs to increase ram for the game itself to use up.
i use game booster myself i couldnt play any games on this laptop with out it,
it free's up processer and ram that is being used by programs that you wont need while in game.
i have recomended it to serveral players and they have all said the same its almost doubled there fps rates. even if you have a good graphics card its worth having just to make everything run that little bit smoother....