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Model A1311 / Mid 2010 / 3.06 & 3.2 GHz Core i3 or 3.6 GHz Core i5 Processor

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Need to buy correct GPU card replacement.

I found the appropriate iFixGuide to replace the GPU on my iMac. However, iFixIt is out of stock for the replacement part. I also tried looking at their suggested vendor, and they are also out of stock. I’ve found several sellers on eBay, but I’m not sure whether these are direct replacement parts. How do I know if I’ve got the correct replacement or equivalent?

My iMac:

iMac "Core i3" 3.06 21.5-Inch (Mid-2010) Specs (Mid-2010, MC508LL/A, iMac11,2, A1311, 2389)

The GPU is a 256MB Radeon HD 4670 GDDR3 memory

From what I can see, I could also replace it with a 5670 with 512 MB.

My iMac has crashed, so I’m just trying to get it up and working. I’m not too concerned about upgrading, but, if the 5670 is available, I might as well.

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Thank-you so much for getting back so quickly and confirming my suspicions about the Dell boards I see listed! The cost of the GPU cards are almost as expensive as buying a similar used computer, so I'm not sure whether I will go that route. Maybe if I can find the part cheaper on eBay? Something for me to figure out!

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Hello, I see that you were already looking for information on the subject will work in reverse? Changing a burned HD5670_512 Mb for an HD4670_256 Mb?

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The two GPU boards your system supports are:

  • ATI Radeon HD 4670 (256 MB) - Apple P/N 661-5539
  • ATI Radeon HD 5670 (512 MB) - Apple P/N 661-5546

I often find looking up the Apple part number will more likely get you the correct part. In any case the firmware chip will have an Apple logo label on it. Thats the most important thing as some people will try to see you the Dell board which won’t work.

Here’s a few ones I found but they go quickly! You may need to call them.

ATI Radeon HD 4670:

ATI Radeon HD 5670:

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Sharyn zal eeuwig dankbaar zijn.
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