V-ray performance on GPU

With 3ds Max 2018 and the V-ray 3.60, I ran a simple rendering job where the frame size is HD (1920x1080). On a Sandybridge 8-core cpu (with hyperthreading it is 16) which is rather an old CPU, the redering took 16 mintes.

I also, ran that on a PNY Quadro M2000 and I checked that the GPU is fully loaded. It took 13 minutes to finish the job!

So, does that comparison make sense?

actually have the same question. So there are a lot commercial renderfarm https://rentrender.com/gpu-render-farms-list/ and CPU time cost more than CPU time. But when ask them about difference all says something like that “All depends on … 1000000 detail”

Assuming that this is a single GPU installed in the system, there is a load placed on the GPU as a display device as well.
Please reference this information https://docs.chaosgroup.com/display/VRAY3MAX/Set+Up+V-Ray+RT+GPU
There are options for hybrid mode and optimizing your workflow to improve render performance.
Thanks

The Benchmark tool:
https://www.chaosgroup.com/vray/benchmark

To compare results with others:
http://benchmark.chaosgroup.com/cpu

Top of the line NVIDIA GPU benchmarks:
https://www.chaosgroup.com/blog/v-ray-gpu-benchmarks-on-top-of-the-line-nvidia-gpus

I ran the official V-ray benchmark on both CPU and GPU.

CPU:
Xeon 8-core (16 threads)
Sandybridge 2660 (v2)
Price is $190 https://www.newegg.com/Product/Product.aspx?Item=9SIAC3K5202140

RAM:
1 DIMM
16 GB
DDR3

GPU:
PNY M2000 (maxwell)
700 cores
GDDR5
Price is $400 https://www.amazon.com/PNY-quadro-m2000-gddr5-vcqm2000-esppb/dp/B01ECDW5NK

MB:
Tyan 7059 http://www.tyan.com/Barebones_FT77AB7059_B7059F77AV6R

Now what was the result?!

[b] CPU time: 3 minutes and 11 seconds. See the screen shot at https://pasteboard.co/GSI8c7O.jpg.
GPU time: 5 minutes and 21 seconds. See the screen shot at https://pasteboard.co/GSI7Zvj.jpg.

[/b]
Is there any idea about the bad result of GPU? It is really strange.

please review the GPU and CPU configurations that others have posted with similar benchmark runtimes here …
http://benchmark.chaosgroup.com/gpu/details?hw=Intel(R)%20Xeon(R)%20CPU%20E5-2630%20v4%20%40%202.20GHz%20x20%2C%20Quadro%20M2000%204096MB&id=2383

So that actually confirms what I achieved.
An important question now is that why a $400 gpu defeated from a $200 cpu while the cpu is rather old and the application is actually GPU friendly.
I have another experience with Abaqus (engineering software) where the M2000 runtime was about 25 minutes while using 4 cores of the cpu had 10 minutes.

May I ask In what circumstance, using M2000 is beneficial?

Hi,

Mansoor from Nvidea Tech support chat has sent me here with my issue.
For some reason my graphics crash and I get artefacts all over my screen when using Vray for CPU based rendering. I find this bizarre as the GPU is only under 3-4% load. What is causing this and how do we fix it?

Ive tried all of Chaos Group suggestions. Ive spent £800 on upgrading my system. Ive had my system fully diagnosed and every piece of hardware tested. The repair shop fixed it by installing an older version of windows 10. I installed the latest drivers and my software. The issue is there again. This only happens when I do CPU rendering with Vray ADV 3.6. GPU rendering is fine. GPU simulation is fine with realflow.