Hi Bitcointalk,
Just wanted to share that yesterday I added a 8th 1660 super on my mining rig with the motherboard Asus Prime Z390-A and it seems pretty stable.
I had to buy 2X M.2 To USB 3.0 Transfer PCI-E Riser Card Adapter because the motherboard only has 6 PCIe slots. Here's the link for the card adapter:
https://www.ebay.ca/itm/122990821026I'm letting you know because I often heard that some people had difficulties to have steady 8 GPUs running on one mining rig.
P.S. The processor is Intel Celeron G4930 Desktop Processor 2 Core 3.2 GHz LGA1151 300 Series
I use HiveOs, Gminer, HiveOn mining pool.
Cheers!