Not the maximum, but enough for my work.
Then I resized the all images to 1K. This is the best way to get high-quality images for Artstation and the web without huge file sizes.
In total, all 17 images were rendered in about 40 - 60 minutes — simultaneously.
How do you typically render, when not using Chaos Cloud?
Using my Dual Xeon E5 2670/32 threads/2.60Ghz/64 GB RAM on the farm, such a render would have taken much longer. I conducted a test with another image and the render took about five hours, versus 30 minutes with the same settings in Chaos Cloud.