Can you use an EGPU with a thunderbolt connection? I have a late 2014 27” iMac.
I want to use a EGPU. What are my options?
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No can do.
Apple indicates that eGPU support requires a Thunderbolt 3 port.
You have Thunderbolt 2 with an iMac 5K 27” late 2014. Not Thunderbolt 3.
First iMac with Thunderbolt 3 looks to be the 2017 models.
Use an external graphics processor with your Mac - Apple Support