I will have to purchase an intel iMac 2GHz Core 2 Duo with ATI X1600 inside it because I will need the intel processor for stuff I won't be able to do with a PPC Mac. I'm in a hurry, so I can't wait until a new model is released. I know it's a fast machine, but as far as games are concerned, how fast is it? I have 2 specific questions: 1)Is it faster than my G5 in my signature? If it is, how much faster? 2)Will it play games like Half life 2 in high quality (with windows XP or Vista)?