RTX 2070 Super Performance
ebergerly
Posts: 3,255
Okay, got off my butt and replaced my GTX-1070 with the RTX-2070 Super that's been gathering dust for a couple of years. Easy install, existing drivers worked fine, W10 Task Manager recognized it and I selected Cuda performance graph. BTW, there's also a GTX-1080ti operating in parallel.
Found a complex scene, multiple characters, indoor (lots of never-ending bouncy-bouncies, which presumable RTX is really good at), and started rendering. The scene filled 6.2GB of its 8GB VRAM (same as the 1070), while the 1080ti used 8GB of its 11GB (same as before). Both Cuda graphs were slammed at around 100%, so all was well.
The scene previously took just under 50 minutes with the 1080ti + 1070. But with the 1080ti + RTX-2070 Super it took only 19 minutes. That's 38.26545686% of the old render time !! Not sure what that is in the ever-popular (and confusing, IMO) "times faster than" terminology, but suffice it to say it knocked about 30 minutes off the old render time.
Nice. But I think that improvement only applies to very complex scenes, and I rarely use complex scenes. Unfortunately I also didn't notice much difference in Iray preview performance, which is what I was really hoping for. Yeah, the 2070 Super was up at 80-90% utilization during Iray preview, but it was still pretty laggy, even in Perspective view.
Oh, and the Super ran around <70C, while the 1080ti was around 80C. And with the old setup (1080ti + 1070) the computer drew just under 400 watts from the wall, and with the new setup (1080ti + 2070 Super) it was only about 50 watts more. So my 750 watt PS is still happy.
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Comments
Good to know. I will wait for the cheaper variants of RTX-3000 series, then.
Oh, I forgot to mention an important point...
When rendering Iray, D|S was using 15GB of system RAM for this scene. That's like twice what the largest GPU VRAM is using. A point I've tried to stress before since I've seen little mention of it. When you pay those big bucks for 11GB GPUs, keep in mind you're gonna need like twice that just for D|S, not to mention anything else you have running while you wait for your render...