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Hi,
I was testing V-Ray GPU in V-Ray 7 and noticed that it was considerably slower than the CPU engine in a simple scene (screenshots below). Almost 3 minutes with my RTX 3090 vs 1 minute with my 16-core Ryzen 9950x (overclocked to 5.25 Ghz). The results were the same with V-Ray 6, just ~5% slower in both cases. I made sure that the amount of noise is visually the same in both cases to make the test conditions fair. Therefore I had to set the noise threshold for the GPU engine to 0.008 and 0.005 for the CPU engine respectively.
This can't be normal, can it? I was under the impression that RTX 3090 was decently faster than most CPUs, including the 32-core Threadripper 3970x, as reported on a few occasions by Muhammed_Hamed , if I remember correctly. My V-Ray benchmark CUDA score seems to in line with most other people's scores, so my GPU seems to be working fine.
I was testing V-Ray GPU in V-Ray 7 and noticed that it was considerably slower than the CPU engine in a simple scene (screenshots below). Almost 3 minutes with my RTX 3090 vs 1 minute with my 16-core Ryzen 9950x (overclocked to 5.25 Ghz). The results were the same with V-Ray 6, just ~5% slower in both cases. I made sure that the amount of noise is visually the same in both cases to make the test conditions fair. Therefore I had to set the noise threshold for the GPU engine to 0.008 and 0.005 for the CPU engine respectively.
This can't be normal, can it? I was under the impression that RTX 3090 was decently faster than most CPUs, including the 32-core Threadripper 3970x, as reported on a few occasions by Muhammed_Hamed , if I remember correctly. My V-Ray benchmark CUDA score seems to in line with most other people's scores, so my GPU seems to be working fine.
