I looked on the MacBook RAM page on here and i am not sure if i have the Santa Rosa chipset which would enable me to increase RAM capacity from 3.3GB to 4GB. I current have 2.5GB of memory (A 2GB and a 512MB in the 2 slots) and am not sure whether to buy another 2GB to replace the 512MB one as the prices are so cheap on RAM atm. I have a 2.2Ghz Intel Core Duo processor so would increasing the RAM increase the speed of my MacBook well? I am saving up for a MacBook Pro to buy in about 6 months when i can afford it but need the extra power in my MacBook right now as a temporary measure as Logic Pro struggles to run on my system when i have multiple programs running. So if i bought a 2GB one (makes it 4GB overall) and my capacity was only 3.3GB what would happen? What is the best thing for me to do as i bought my MacBook at just after the release of the MacBook (w/ Santa Rosa) so am not sure whether i have that version or not! Thanks!