Question / Help Quick Question - GPU Number

Pherix

New Member
Hello all,

Under Settings > Output > Advanced > GPU, I am to understand that this determines what GPU is responsible for encoding. My questions are as follows:

• On a multi-card system, how do you know what number your card is?
• Is the number determined in your BIOS, or is this set somewhere else?

I am currently playing and streaming from the same PC, and want to ensure that the more powerful of the 2 cards are being used for this. I am attempting to use the NVENC H.264 method, and would want to make sure that the card with the most resources does the encoding. My cards are an NVIDIA GeForce GTX 660 Ti (this runs 2 out of the 3 monitors on my system as secondary screens) and an NVIDIA GeForce GTX 960 (Main screen used for all games).

So any help identifying which card is assigned to what GPU number would be greatly appreciated, as the numbers go from 0-8 select-able. Or, if it wont matter for some reason, that will work too, but I would appreciate the reasoning why, just purely to educate myself.

Thanks for your time,

Pherix
 
Last edited:
in my log Adapter 1 is card 0 and Adapter 2 is card 1 etc

19:04:35.818: Initializing D3D11..
19:04:35.818: Available Video Adapters:
19:04:35.819: Adapter 1: NVIDIA GeForce GTX 960
19:04:35.819: Dedicated VRAM: 4205510656
19:04:35.819: Shared VRAM: 4225421312
19:04:35.819: output 1: pos={0, 0}, size={1920, 1080}, attached=true
19:04:35.819: Adapter 2: Intel(R) HD Graphics 530
19:04:35.819: Dedicated VRAM: 134217728
19:04:35.819: Shared VRAM: 4225421312
19:04:35.821: Loading up D3D11 on adapter NVIDIA GeForce GTX 960 (0)
19:04:35.834: D3D11 loaded sucessfully, feature level used: 45056

but if you have cpu with quicksync you will get better results with it than with nvenc https://obsproject.com/forum/resources/how-to-use-quicksync.82/
 
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