Amd rx 480

[savage309]

We got the Polaris based AMD RX 480 8gb here in the office and did a few early benchmarks with it.
For denoising it seems like the best performance per dollar, being 35% faster than 1080 and 275% faster than Titan X. It is 44% slower than AMD Fury X which is the fastest denoising GPU with the current V-Ray denoiser, but it is much cheaper.

There are some very interesting/surprising results with RT OpenCL as well. In most scenes it is less than two times slower compared to the three times more expensive (comparing reference models with same memory configurations) GTX 1080 running CUDA and roughly as fast as it running OpenCL.
There are some stuff that are not supported in the RT OpenCL engine compared to RT CUDA however. We plan to look at those.

It seems like the older Fury X is performing better with the new drivers as well, but the Polaris architecture is definitely a big improvement.

[werticus]

If i have a fury x and a Titan X can you use them together? Would there be any point? (since im assuming you'd have to use them in open cl if they work at all and the titan would be running at half speed in that case)

Is very smart enough to know that the fury x should be doing the denoising?

[savage309]

If i have a fury x and a Titan X can you use them together? Would there be any point? (since im assuming you'd have to use them in open cl if they work at all and the titan would be running at half speed in that case)

Is very smart enough to know that the fury x should be doing the denoising?

The last time I checked Titan X in CUDA was faster than Titan X in OpenCL + Fury X. It was some time ago, so this might have changed.

We have heuristic trying to find what GPU we have to use for denoising, but I am not sure what it will decide in your case (it should tell that in the log, I believe). If you want to be sure that the AMD will be used for denoising, you can set environment variable "VRAY_OCL_DENOISER_DEVICES=amd gpu".

Best,
Blago.