Quote from: Stubo on May 03, 2018, 11:45:41 AM

That is a good point, Thay. I was very surprised to learn how much some GPUs pull through the PCI slot and also that it varies by GPU and MFR. If we assume 50w per card (may even be low) and another 80w for the mobo, that gives us 680w. That is what I would consider to be the max usable for a 850w PSU (80% of rated output).

EDIT: IMO, trying to get a 12 GPU rig to be rock stable is an exercise in frustration. I have read dozens of messages on this thread (and others) of folks having all kinds of oddball problems with rigs that use more than 8 GPUs. This includes not only nvOC, but also Windows, SMOS, and HiveOS. It can be done, but it comes with an inherent lack of stability. If I were you, I would split it up into 2 rigs and get on with mining.

Added just two hours ago the 9th gpu to my rig, let me dream for a while as long as it don't crash. Btw it's a dual 850w psu rig, the psu powering the first 6-gpu runs also the mobo, 670w by itself from power socket, the other half is intended to work with 7-gpu, it's running only 3 right now. No kind of cable meltdown or overheating since November, so I'll keep crossing fingers. Still I would really like to check how much of the 100w budget my cards are getting through sata cables vs vga ones.