Answer to: I want to upgrade my MacBook Pro(mid 2009) to the highestThanks for sharing information. I am a Mid, 2009, macbook pro, 5.5. I moved to Captain, with just a 2GB RAM, I am finding that the mac is not fast, It is so sad to see my buddy to underperform. Hence, I am considering to increase RAM to 2 2GB s each. Can some one share light on it. Thanks in advance.