Graphics card upgrade query
Hi guys. I have a 2009 27” iMac with the HD 4850 card which has died or is failing (horizontal lines across the screen). From researching here I see that card can be replaced with a more powerful HD 5750. I am wondering can I reuse the heat sink assembly from the 4850 and just purchase the 5750 chip on its own ? Thanks in advance for any advice.
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