Hi there. I'm new to this forum. I have the same MT6831 Gateway laptop. I do pro audio and the factory processor isn't going to cut it. I heard Tigerdirect.com is a good place to buy parts because the personnel are supposed to be trained well. I called them and I bought an Intel 2.6 GHz Quad Core processor for $199. That's 2.6 GHz PER Core. (Part# CP2-DUO-Q6700) I'm sure the processor will fit because it is the same socket (775). I know it's a little late to ask, but is anyone aware of any issues I might encounter when putting a hi-performance processor in this laptop? I don't know much about this stuff. Thank you very much!