Hello, everyone I just bought a Macbook Pro 15" model MD318LL/A, and I was wondering if I can change the 6GB RAM memory I bought for my Macbook late 2007 to this new computer. I've seen my 6GB are DDR2 and the 4GB that the new MBP are DDR3. Will I see any improvement in the performance with those extra 2GB or it would be almost unnoticeable? Also, for the music producers, I changed my laptop because, even with those 6GB I put on my macbook late 2007, It was almost impossible to run a single song on Logic with third party plugins such Waves (specially with the MPX Tape Satulator, a couple of those and the computer freezes like a PC ). Will be enough with this i7 Quad-core and 4Gb for not killing my workflow every 5 sec of performance? Thanks.