Back in 2006, I purchased a black Macbook Core Duo (2ghz, 2gb ram), the laptop still runs great, but another older computer has died and I am considering purchasing the new Al Macbook (the 2.4 ghz model) and moving this one down the food chain. Aside from the graphics upgrade which will be night and day, how big of an upgrade would this new laptop be? Would Snow Leopard perform significantly better on the Core 2, of will I not see any real performance gains until the i7 (which may not reach the non-pro Macbook for at least a year). Would I be getting a significantly better machine, or I am simply throwing my money away?