I currently have an Toshiba Satellite C55-A5286 Laptop and I plan on upgrading it for increased performance all around. I have narrowed down that I can get 16GB of DDR3 RAM for it and that an SSD would work with it. I want to upgrade the CPU too because as of now it has a Core i3-3120M (Dual Core Four Thread) and that doesn't seem to preform very well. I've found an i7-3720QM on Ebay and I'm willing to take the risk of buying it off Ebay. In theory it would work because it shares the same socket as the 3120M and the TDP is only 10 Degrees higher. My only concerns are if the CPU cooler in the laptop right now would provide sufficient cooling and just to make sure it's possible. If there is anything I should know about upgrading the laptops CPU please tell me as I'm a noob when it comes to Mobile processors. Thanks for any help at all!