I have a late 2007, 2.2GHz Intel Core 2 Duo Macbook with 4GB RAM. The plastic is starting to fall to bits (2nd time). The chip is the one with integrated "graphics" and the RAM 667 DDR2. I work as a self employed consultant, travel quite a lot and need to be able run Windows sometimes (W7). If I'm running multiple applications (Mail, iCal, itunes, Excel, Word) + Fusion the 4GB gets used pretty quickly - Fusion/Windows eats about 2GB. So my question will the 4 years newer fully loaded MBA with 4GB RAM work any better or will I have the same problem on a nicer looking machine? Linked to this - if the fully loaded MBA will have similar performance - does anyone have thoughts as to whether the Sandybridge MBA's will have more RAM (as the current MB Pro does)? I haven't seen anything about more RAM in the forums so may be I'm missing something?