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iMac 21.5" A1311 ATI Radeon HD 4670 Graphic Video Card Mid-2010 Apple HD4670 AMD
Apple iMac 27" A1312 AMD ATI Radeon HD 5670 Graphics Video Card 2009 2010 HD5670 661-5579 Late 2009 Mid 2010
Apple iMac 21.5" A1311 ATI Radeon HD 4670 Graphic Video Card Mid 2010 661-5539
Apple iMac 21.5" A1311 AMD Radeon HD 6770m Graphics Video Card Mid-2011 HD6770M with Heatsink 661-5945 ATI