What does XP have to do with anything? Do you actually believe there will be some great performance increase by cutting out CD users? Of course not, you might save a couple megabytes for the drivers/code though. Not to mention, these Core Duo machines are stil very nice. To compare to the latest Macbook GeekBenches only about 25% more, and I'm not entirely sure how much of that is because the newest Macbook has a dedicated graphics card while the originals don't, which would mean for everyday tasks they are pretty much the same. Hell to make it even fairer, the C2D update that will be supported benchmarked only 5% more. When Apple cut PPC from SL, it was an obvious move forward. Were people who bought an expensive G5 or Powerbook happy? No, but it's a bit more understandable then this move.