I am going to be upgrading a very old model just because I love the look of it and the keyboard. I'm not running tons of busy programs, but I want to speed it up a little and it's on the verge of crashing. I currently have 4gb RAM, 250gb HDD, Intel Core 2 Duo processor T5750 2.0 ghz, and run windows 7 pro 32 bit. It is 64 bit capable, so I am upgrading the os to the 64 bit version, upgrading to 256gb SSD, and will upgrade the CPU if possible or necessary to be able to also upgrade to 8gb RAM. I know it has 2 slots, so before I buy 2 4gb memory cards, I want to be sure I can actually use them. I ran a Crucial scan, but the os is still 32 bit, and I don't know if that influenced their report of a max 4gb RAM for this model.