A friend and I were doing some comparable testing with raytracing between his new RTX3070 and my GTX1070 to see the rendering times.
This is the file we used:
raytrace-test.3dm (1.7 MB)
And these were the settings we used
On the render test (we have similar intel CPUs); both running new rhino 7 versions, his card was around 2.25x quicker for an exact same resolution render with same cycle quantity.
The issue we were wondering about was why the GPU utilisation was only 4% or 5% for either of our cards?
Perhaps it was the low complexity of the file. So with a far far larger (1.1gb) file with materials, textures skylight and sun, I started to raytrace; but still only saw an average of between 8-10% utilisation of the ‘3D’ component.
Is this normal? Or maybe I have some settings wrong?