Will Thunderbolt 3 eGPU work with Thunderbolt 2 via cable?

[asdfguy]

I have a 2015 15" MacBook Pro which has Thunderbolt 2. I was wondering if I can use Thunderbolt 3 eGPU and connect it to my MacBook using Thunderbolt 3 to Thunderbolt 2 cable?

 

[GeX]

Yes, that should work but eGPU isn't supported over TB2 in High Sierra - so you'll need to run something like https://egpu.io/forums/mac-setup/script-enable-egpu-on-tb1-2-macs-on-macos-10-13-4/ as well.