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GPU vs CPU
Posted: Thu Sep 03, 2015 5:43 am
by contegufo
HI
To what extent is the advantage of a percentage rendering GPU than CPU usage?
Re: GPU vs CPU
Posted: Thu Sep 03, 2015 10:32 am
by Zom-B
Re: GPU vs CPU
Posted: Tue Oct 20, 2015 4:37 am
by ViRiX_Dreamcore
I just did a test yesterday based on 30 seconds of rendering time.
This is really rough as I just used a small scene I threw together.
Specs, Intel 4790K 4.0 GHz, GTX 980 Ti, 32 gigs of RAM.
Bidirectional MTL on CPU for 30 seconds, 32 samples per pixel
CPU OpenCL 30 seconds: 31 spp
GPU OpenCL 30 Seconds: 70 spp
GPU CUDA 30 seconds: 72 spp
I know that was super crude, but I've tested this on multiple scenes and even though the numbers a re a bit different, GPU does indeed seem to be nearly twice as fast in Open CL or CUDA.
I was using Indigo RT 3.8.23