(In cpu + gpu rendering environment) My guess is that the number of cores of cpu is more important than gpu.
What do you think? The cpu usage rate is 100% and the gpu usage rate is 40 ~ 70% each time.
For example, I assume that the speed of ryzen1700 + gtx1070 will be similar to ryzen1600 + gtx1080ti.
but it is not easy to find related benchmarks.
Do you have any information on this?
Individual CPU threads are substantially slower than modern GPUs, and from what I’ve seen generally the single GPU thread will be substantially faster than all the CPU threads put together. Probably this is a closer race on a 16 or 32 core CPU, but in most cases enabling CPU+GPU is a modest performance boost, and you want to use a 2.80 or 2.79 experimental build so you can set small rendering tile sizes so that when you get to the end of the render you don’t have an idle GPU and have to wait for all the slow CPU tiles to complete which can slow down the render time a lot. Best to do even tiny 16x16 tiles in many cases now.