There was a discussion on the RS forums about it. I don't recall the numbers, though. I don't think the speed of the PCIe slot made a huge difference. It's really all about the speed of the card.
Also, although it doesn't load the entire scene into your card's memory, the more memory your card has, the better it is. But overall, for the type of work I'm mainly doing these days, it's extremely fast. In fact, it's so fast that I was finding the bottleneck was the time taken to export the mesh to Redshift, not rendering. Redshift has a proxy system like Vray & Arnold, but you have to manually create proxies per object & my scene had hundreds and hundreds of objects, so I didn't have time to create them. Therefore, it was creating a renderable mesh per frame - so on a frame that took 28 seconds to render, 20 seconds was spent exporting the mesh and 8 seconds were spent on rendering. But again, it's a beta and they're continuing to improve things like the proxy system. Once I'm caught up I'm hoping to try rendering the classroom scene and see how it does. -Paul ᐧ
