Apple Video Card ATI Radeon HD 5750 1GB GDDR5 SDRAM for iMac 27" Mid 2010
APPLE PART # 661-5578

COMPATIBILITY:
iMac (27-inch, Mid 2010) 27" LCD;3.2 GHz Core i3 / 2.8 Ghz Core i5
MC510LL/A, MC511LL/A
A1312