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One more screenshot from my rig 4 x Gigabyte RX 470 G1 4 GB
My replacement GPU arrived and while the rig was down this morning, I added the 7th GPU.which motherboard for 7 GPU's? You connected them with 2 PSU-s? Which type/model?
I first unplugged all the others and put the new GPU in slot 0, flashed the bios, replugged all the GPU's in order and then went thru trixx and made sure all the cards were at 1100/1950, some at 1925, GPU at 1875, then restarted and it magically worked, so the rig is now hashing at 190 mh/s
Lets see how long it stays up this time.