My grandmother recently got a new PC and gave me her old iMac. I'm looking to build a PC but first I want to sell the Mac. It's a 27 inch iMac with a 1440p display. It's a 2011 model, with an i5 2500s @ 2.7 GHz, it has been upgraded to 14 gigabytes of ram, and an HD 6770M with 512 mb of GDDR5...