Hello! I own a MacBook Pro 2,4GHz 2GB RAM with the 8600M GT 256MB somehow being recognized as a 512MB VRAM by games' analysis, playing Bioshock and Assassin's Creed with respectively maxed-out and close to maxed-out graphic settings, and I've only today noticed one thing: When I unplug the battery cable, leaving the MBP to the battery alone, the performance drops drastically. Not to mention that this baby gets HOT when playing. I couldn't be more proud of the performance when the lappy's on the electric current though. Question: Is it normal that I have to lower the graphics so much to play as smoothly when the battery's the only source of power? Or could it have been because it was too hot? I don't see why it should have such a slower performance, I thought it should eat up the battery in 1h instead of 4h, but not such a speed drop.... Thanks in advance for the help!