£10 to £20

Apple iMac A1224 20" AMD Radeon HD 2400XT 128mb Graphics Video Card HD2400 2007 2008

iMac 21.5" A1311 ATI Radeon HD 4670 Graphic Video Card Mid-2010 Apple HD4670 AMD

Apple iMac 21.5" A1311 ATI Radeon HD 5670 512mb Graphics Video Card HD5670 AMD (661-5546)

Apple iMac 21.5" A1311 Mid 2011 AMD ATI Radeon HD 6750 Graphic Video Card HD6750 Computer Graphics & Heatsink