Wed Mar 24, 2021 10:32 pm
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.
My Biases:
You NEED training.
You NEED a desktop.
You NEED a calibrated (non-computer) display.
