Apple Computer iMac 21.5-inch 2.5/2.7 Core i5 (I5-2400S, I5-2500S) iMac 21.5-inch 2.8 GHz Core i7 (I7-2600S) Order Number MC309LL/A Model Number A1225 Model Year Mid 2011 Part Name Video Card 512MB AMD Radeon HD 6750M Manufacture Part Number N/A Compatible Apple Order Number MC309LL/A, MC812LL/A Compatible Apple Model Number A1311 EMC Number EMC 2428 EEE […]