so I've got a 2.0GHz Core Duo Macbook... I bought it the day that it came out, and since upgraded it to 2GB memory and upgraded to Leopard. anyways, will I see any significant performance gains? getting the base model, will it run my 23" ACD any quicker than my macbook does? i don't do much other than iLife and photoshop, the occasional game which my computer sometimes chokes up on... all this processor talk just confuses me sometimes... and I'm aware of all the new features, etc., but I'm talking speed here. :] thanks!