I'm back in the Hardware (again) stage, so I started looking at GPUs. IronCAD recommended I use a Quadro card but if you look at the Quadro desktop products here it's a little confusing with all of the different model numbers and I heard the Quadro name is going away which might explain why quite a few of the cards here aren't Quadro anymore. I thought it was a good name for recognizing the professional cards so I'm not sure why they would drop it but whatever. https://www.nvidia.com/en-us/design-visualization/desktop-graphics/
I want to do more rendering with Keyshot so I decided to ask Keyshot if they recommended a video card or if they could tell me the minimum requirements. They said as far as GPU for an Enterprise card I would recommend an RTX Quadro 5000 and up, for a retail card an RTX 3080 and up would be good, these cards have tested very well for GPU rendering.
Then I remembered that the IronCAD version of Keyshot has a smaller or limited screen size/pixel area so I asked if this would make any difference. (i.e., Do I really need that much GPU performance?). For what it's worth, here's what they said...
So the biggest thing we see with GPU rendering is that GPU rendering will use the VRAM of the GPU card not the internal RAM like it would for CPU rendering. If you are working on larger scenes or if the scene is very complex (eg. Advanced material, physical lighting etc.) then a card with more VRAM will be necessary to utilize the GPU card. Any card with less than 12G of VRAM we have seen customer run in to issue where they will run out of memory while working. So for you I would recommend looking for a card that has at least 12G of VRAM.
Hopefully this helps other IronCAD + Keyshot users out there.