Looking to boost performence and hopefully battery life of my MBP from 2007 (2,2 GHz Intel Core 2 Duo). I'll be running OSX Mavericks. I've been looking through some forums on the topic, but i'm still a bit confused... Does all 2,5" ssd's work on this machine? Like the Samsung SSD 840 EVO 120gb? http://www.amazon.com/Samsung-Electronics-EVO-Series-2-5-Inch-MZ-7TE120BW/dp/B00E3W15P0 I've read something about a hdd thermal sensor (or something like that). That some people experience fans going crazy at full speed all the time after a hd swap. Don't want that. Why exactly does this happen and how can i avoid it? Can't really see this sensor in the iFixit guides. This thing called Trim. I've read that i need this to avoid the ssd from going slow. Is this something inside the actual ssd or via software inside the OS?