Mac Pro 5,1 and eGPU
So, I have a 2010 Mac Pro that I have upgraded to two 6 core Xeons running High Sierra, but need upgraded graphics capability. I really don't want to lose the boot option and my GTX 120 works fine, although slow when in PS. I would like to add an eGPU and better graphics card, but don't want to spend all the money for naught. Is there anything special I need to do (other than correct Nvidia and CUDA drivers) to make this work OR will this even work? I assume I would need to add a thunderbolt expansion card.
TIA
Mark
Mac Pro, 10.13