I have a 2.53 GHz i5 Late 2010 Macbook pro with 4gigs of ram preinstalled and I am interested in upgrading to 8gigs. I go to Arizona State University as a CS major so I do a lot of programming and am constantly on my mac. My question is whether or not I will see a significant performance increase with upgrading my macbook? Anyone who has done this want to share their stories? Thanks for any replies or advice.