GTX 1080 Ti vs 2 x RX580 4 Go
Posted:
Wed Mar 24, 2021 10:22 pmby esoxx_13
Hello,
Would a GTX 1080 ti be significatively better in DVR in comparison to my 2 RX580 4 Go ? That would be to run DVR under OSX Big Sur and Linux.
Re: GTX 1080 Ti vs 2 x RX580 4 Go
Posted:
Wed Mar 24, 2021 10:32 pmby Jim Simon
Posted by staff in another thread:
Resolve uses the GPU memory on every card it has in the system that is selected for Resolve use.
Generally it doesn't share memory to other cards.. lets not get into exceptions.
If you have a GPU in the system but its not selected in preferences, its just a waste of space.
If you have mis matched GPUs, the slowest GPU will define how fast the system can process.
If you have GPUs with difference memory capacity, the lowest capacity will define how big an image and the type of processing before its runs out of memory. The cards with extra memory waste that memory.
If you have a separate UI GPU, that's something we generally don't favor now, whereas we did 10 years ago.
If you have one more powerful and more memory GPU compared to a second, use the better one for the UI but not as UI only. It might make a little difference if the gpu performance is close.
One very powerful GPU with lots of RAM is better than two average GPUs, for many reasons....
Anyone who says multiple GPUs are a waste of time are picking a use case that doesn't need them, after all the large facilities that put 4 x 24GB GPUS in their system are spending that money for fun.
Most users will be happy with one good GPU.
All image processing is in GPU.
Some new GPUs, with the Resolve Studio version. also support compression and decompression in a hardware stage in the GPU.
GPU driver selection makes a big difference in reliability.
Re: GTX 1080 Ti vs 2 x RX580 4 Go
Posted:
Thu Mar 25, 2021 2:01 amby Uli Plank
To add the most important point: The 1080 Ti will not run under Big Sur.
Computing power will be quite good with two RX580, but you'll be limited to HD.
Re: GTX 1080 Ti vs 2 x RX580 4 Go
Posted:
Wed Mar 31, 2021 10:48 amby esoxx_13
Uli Plank wrote:To add the most important point: The 1080 Ti will not run under Big Sur.
Computing power will be quite good with two RX580, but you'll be limited to HD.
Thanks for your answer. Yes I've seen that BS will not support anymore nvidia. But If I upgrade with 2 X RX580 8Go, will it be OK for 4K footage ?