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M.Max Agreed!
Considering that a 1080Ti is 4 times faster than a 970, your render times are the expected difference between the 2 engines.
There are differences between the 2 engines, which is expected to happen, like how the lights are brighter And bump mapping is strong on roof material compared to the CPU render
Also side by side, the GPU image seems to have less noise. So, trying to match the same noise pattern you will probably need to use lower noise threshold on CPU
So yeah, Something is going on with Alex_M scene.
Here is another test I did, 3200x3200 Res
Using substance textures and VRscans to make sure that the 2 renders are matching as close as possible
Vray CPU >> 35m 11s
Vray Cuda using only C++/CPU >> 40m 30s
Vray Cuda with 3 1080Tis and C++/CPU >> 8m 24s seconds
For this scene I used .02 noise threshold for the GPU render and it is really impressive how Vray GPU deals with noise. Check out the sample rate screenshot.
To match the same clean render I needed to use .01 noise threshold for Vray CPU and still in dark areas, the image rendered on GPU is cleaner! See below
So rendering on GPU has been almost 5 times faster than my OCed i9 7900X @4.8 GHz, I can add 2 more cards to my setup, but with CPUs you are mostly limited to 1 or 2
And for animation, I usually do one frame per GPU using this tool by Alex Kurcera
http://vrscenegui.de
It saves a lot of render time.
Considering that a 1080Ti is 4 times faster than a 970, your render times are the expected difference between the 2 engines.
There are differences between the 2 engines, which is expected to happen, like how the lights are brighter And bump mapping is strong on roof material compared to the CPU render
Also side by side, the GPU image seems to have less noise. So, trying to match the same noise pattern you will probably need to use lower noise threshold on CPU
So yeah, Something is going on with Alex_M scene.
Here is another test I did, 3200x3200 Res
Using substance textures and VRscans to make sure that the 2 renders are matching as close as possible
Vray CPU >> 35m 11s
Vray Cuda using only C++/CPU >> 40m 30s
Vray Cuda with 3 1080Tis and C++/CPU >> 8m 24s seconds
For this scene I used .02 noise threshold for the GPU render and it is really impressive how Vray GPU deals with noise. Check out the sample rate screenshot.
To match the same clean render I needed to use .01 noise threshold for Vray CPU and still in dark areas, the image rendered on GPU is cleaner! See below
So rendering on GPU has been almost 5 times faster than my OCed i9 7900X @4.8 GHz, I can add 2 more cards to my setup, but with CPUs you are mostly limited to 1 or 2
And for animation, I usually do one frame per GPU using this tool by Alex Kurcera
http://vrscenegui.de
It saves a lot of render time.
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