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661-5546 - Apple iMac 21.5" A1311 Mid-2010 ATI Radeon HD 5670 512MB Video Card

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Genuine Apple Video Card for the Mid 2010 21.5" iMac.  This part was used in the MC509LL/A model which was the High End iMac for mid 2010.

Please note that this card may be installed as replacement / Upgrade for the ATI Radeon HD 4670 256MB Video Card which was standard on the MC508LL/A entry level model.   


21.5" Apple iMac Aluminum (Thick Edge) Mid 2010


iMac 11,2 A1311 - 2389 Mid 2010

Model Numbers



AMD Radeon™
HD 5670 GPU
Engine Clock 775 MHz
Memory 512 MB GDDR3 SDRAM
Memory Clock 1,000 MHz (4,000 MHz effective)
Memory Bandwidth 64.00 GB/s (maximum)
Single Precision Compute Power 620.0 GFLOPS
Bus Interface6 PCIe 2.0 x16