These are all the processors compatible with the M sockethttp://www.cpu-world.com/Sockets/Socket%20M%20(mPGA478MT).html. If you want the be 100% sure that the upgrade is possible call the manufacturer and double check. A lot a of people say you can go and get better processors than what they recommend, and a lot of the time you can. Just make sure if you buy one new or used it has a return policy. Something like 14 or 30 day money back.