Original Graphics Video Card for Apple iMac 2011 Core i5 2.7 A1312 MC813LL/A MC813 27 Inch Desktop PC Computer AMD Radeon HD 6770M HD6770M GDDR5 512MB 109-C29557-00 Replacement Parts : Electronics
New iMac Come with Radeon HD 6770M and HD 6970M | Geeks3D
Apple iMac 27" A1312 Mid 2011 ATI Radeon HD 6770M 512MB Graphics Card | eBay
② Imac 27 inc mid 2011 — Apple Desktops — 2dehands