AMD

iMac 21.5" A1311 ATI Radeon HD 6770m 512mb Graphics Video Card 661-5945 Mid-2011

iMac 27" A1312 ATi Radeon HD 5670 512MB Graphics Video Card 661-5579 MID 2010

Apple iMac 21.5" A1311 ATI Radeon HD 4670 Graphic Video Card 2010 661-5539 GPU

Apple iMac 27in A1312 Mid 2010 ATI Radeon HD5750 1GB Graphic Video GPU Card 661-5578

iMac A1224 20" ATi Radeon HD 2400XT 128mb Graphics/Video Card 2007 2008

iMac Mid 2010 21.5" inch Video Graphics Card HD4670 A1311 HD 4670 + Heatsink

iMac 21.5" inch A1311 ATI Radeon HD 4670 Graphics Video Card Mid-2010 for Apple

Apple iMac 21.5" A1311 ATI Radeon HD 4670 Graphics Video Card Late 2009 HD4670