What miner is this?
Assuming that you're talking about the ETH miner - it is Phoenix Miner.
Now I do! How did you achieve more than 8 nvidia cards under Windows 10 ?
Use the latest driver and 1709 update. That's all you need, assuming that you have setup the motherboard properly.
I've also made a guide on how to get 13 cards but it was ignored.
[Guide] How to run up to 13 GPUs on most motherboards