Hi. I have a 2015 15" MBPr and love it but this question is for my friend has an older MBP from 2010 as above and wants a new logic board. Her question is whether she can put a 2.53 GHz Logic Board into her machine because she has a 2.8 "order to custom" speed Logic Board when she bought hers. The 2.8 processor was a special customer order at the time in 2010. Could I please ask the good people here 1. Where she can buy a good refurbed or new Logic Board and 2. Whether the Midi 2010 17" 2.53 GHz Logic Board would be fine for her Mid 2010 17" 2.8 GHz model (which is, as I know it, to be a 2.53 but with a custom 2.8 GHz order). http://www.everymac.com/systems/app...7-2.8-aluminum-17-mid-2010-unibody-specs.html Looks like hers is the same as the 2.53 model exactly. Wonder also if she could put a 2.66 in there? Same logic board, just different speed processors? Thanks all.