BTC-D37/BTC-37 is working to my surprise, and it only takes about 20W, if you have any questions please ask.

Here is link to the motherboard I got, the green slots one is for RTX cards, with more spacing between cards:

Tags: Mining motherboard, Chinese motherboard, mining cryptocurrency, hashpower, budget cryptocurrency mining, 1080ti, rx470, rx570, power meter, BTC-37, BTC-D37, 8 card motheboard,