I have a new Macbook Pro 13 the other day with 2.4ghz with 4gb RAM. I was expecting it to be night and day from my 2 year old Macbook with only 2gb of RAM. If I upgrade to 8gb of RAM would I see a big improvement in performance when running both Windows and OSX or will it be very little given its a Core 2 Duo still and not Quad??