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For those using the ASRock H110 BTC+, is there an easy way I am missing to know which slot is assigned to which GPU#? I know the PCI-E 16x slot is GPU 0, but what is the naming convention for the others?

run

Code:

nvidia-smi

in guake terminal it will give you Bus-Id

Code:

lshw

will give you more details too

Thank you so much. I am not sure these commands quite get me what I am looking for, though I may be missing something.

In my setups I have 13 GTX 1060 GB cards. I am hoping for some way to figure out which one is 0, which is 1, 2, 3, etc. Not sure if those reports show any type of serial number that ties out to something on the card or otherwise, or if the physical slots always assign in a certain way when all full? Still realizing that 0 is the 16x slot, I am ultimately hoping to "catalog" my cards to keep track of how each overclocks.

In windows is impossible cause your GPU number change after each reboot, in linux is another hand.
GPU number is linked from hardware so a basic GPU0 is your primary x16, GPU1 is the slot on top on x16 is u have one, and for all other u just follow build sequence.
M2 slot will always be last GPU number from top to down like pci port.

Thanks so much. Not 100% sure I follow; based on what you said, would it be like what I am showing in blue, red, or some other pattern I am not thinking of?

For me it would be blue path Wink

What's the max gpu nvOC can support ?

I am not sure but actually 13 gpu, if u know a little about linux u prolly can edit 3main to handle more them 13 GPU.
Linux dont have about GPU limit like windows have.

The current Ubuntu kernel can properly support up to 16x GPUs. nvOC v0018+ can OC 16x. The kernel can be modified to support more, which I am sure someone will do; as there is the 19x mobo coming out soon.