Original post by: asle ,
I had success now replacing my A1286 15", 2.4Ghz i5 with a 2.66Ghz i7. All the parts fit fine. But like mentioned here there is a difference from 2010 to 2011. The lowercase is the same but the let speaker and the plastic bracket with the cables (bluetooth,airport etc.) are different. Still I had no problem getting the 2011 Quad-Core i7 logic board to fit and start up in my original 2.4ghz, i5, 2010.