Quote from: gtxBitcoinGuy on November 08, 2017, 06:41:06 PM

Quote from: jiri.lhotsky on November 08, 2017, 04:06:20 PM

Hey guys, Im building my first 12 GPU riser rig with the use of two server PSUs. 1st PSU powering the motherboard & CPU (through a 260 watt PICO) and 6 GPUs, 2nd PSU powering another 6 GPUs. I need to ask the more experienced of you about one crucial thing - the proper procedure of turning on and off the rig aka the PSUs powering the GPUs. To my knowledge, the second PSU powering ONLY the GPUs can be powered on (manually) BEFORE the first PSU (with the connected motherboard). And it needs needs to be powered off (manually) AFTER the first PSU. In other words, the GPUs on the second PSU needs to be powered all the time while the system is running and it DOES NOT HARM neither the GPUs nor the motherboard if the 6 GPUs are powered from trhe second PSU while the rest of the system (motherboard etc.) is shut off. Can you please confirm or comment? Many thanks!

You are doing it the right way. One more thing you can do is try to use https://www.amazon.com/dp/B072JM7KVD/ this adapter which will help to turn on and off both PSU simultaneously.

Unfortunately this adapter can not be used on my solution as I have 2 HP server-type PSU's.