It took me a while to get all 6 gpu's recognized but I managed after many attempts!  Now I'm tempted to try a 7th and 8th GPU using m.2 PCIE adapters like some of you guys, but how are you powering a 7th and 8th GPU?  I'm using a EVGA 1200W power supply and it only has 6 VGA connectors/cables and I assume it's not a good idea to use a Y-splitter cable for the extra two GPU's.  My 6-rig GPU is using about 735W as I'm limiting the power to 60% on MSI Afterburner.

Are you guys using a SATA-PCIE cable of some sort?  Is that safe?