Right, I want to clear all this up definitively. What kind of performance can the MacBook really get out of Half Life 2? Please post your specs, you experience in game (outside, inside, with flashlight, in busy areas etc.) and any tips you have for maximising performance (how can you squeeze the most fps out whilst keeping it as pretty as possible?). I've heard everything from it being unplayable to it being lag free. Personally I have ordered a 1.8Ghz (the extra 0.16Ghz would have made any difference to fps I don't think) and 2gigs of RAM. I've got HL2 and Ep1 on my Source account, and I really want to be able to play through them both without having lag ruin the experience. Is this possible, and if so, under what conditions? Also videos, even video comparisons, would be great if anyone can be bothered.