eGPU to replace faulty internal GPU

[Eugen Mezei]

Would an eGPU attached trough Thunderbolt work when the internal GPU is damaged?
I have the iMac 27" late 2015 bought with nonworking GPU (LED3 is not lighting). Instead of a new logic board I thought an external GPU would do the trick. Will it?

 

[TrenttonY]

Would an eGPU attached trough Thunderbolt work when the internal GPU is damaged?
I have the iMac 27" late 2015 bought with nonworking GPU (LED3 is not lighting). Instead of a new logic board I thought an external GPU would do the trick. Will it?

Mind me for not answering your specific question, but aren't eGPUs really expensive? like 700 dollars? And Macs with the M Series don't support eGPUs, so you aren't future proofing in any way.

 

[velocityg4]

As far as I’m aware. You’ll need the internal one working to set the eGPU up.

 

[Eugen Mezei]

Mind me for not answering your specific question, but aren't eGPUs really expensive? like 700 dollars? And Macs with the M Series don't support eGPUs, so you aren't future proofing in any way.

Yes, you are right that it makes no financial sense. Especially the Thunderbolt ones.

 

[Fishrrman]

Not worth the money.

 

[Eugen Mezei]

Not worth the money.

You are right, but that was not the question.

 

[velocityg4]

From what I can find. Before you can use an eGPU. At least on an older Thunderbolt 2 model like yours. You have to install a patch someone created first. Also disable SIP. Either step would require the internal GPU to function.