At the Fareham meeting today, I did a presentation on why & how to fit a more powerful graphics processor (GPU) to your Mac, even if you don't have a Mac Pro tower. Even an iMac Pro can use the extra power, and it doesn't involve a hacksaw and gaffer tape to install! I also did a PDF going into rather more detail- I hasten to add this is the study notes version not the PhD dissertation, it's plain English, honest! For those who were at the meeting and didn't take a copy then, and for anyone else who might be interested, I've put it on my Google Drive space. Just use the link below.
https://drive.google.com/file/d/1ZzpboNB-bazrBXE2G_PZMPbTEPE3YOkD/view
Stuart Affleck 