It finally works here.. Speed is "ok" for RX 480's..
My Z170 only runs with 3 RX480s.. As soon as I put it int 4.th the board doesn't boot - it seems there is a conflict with the SATA port or so - no HD is recognized anymore. I already tried to disable the Internal GPU, HD Audio etc. everything in BIOS but it doesn't help.. Seems this shitty board can only run 3 cards at once.
My Z170 only runs with 3 RX480s.. As soon as I put it int 4.th the board doesn't boot - it seems there is a conflict with the SATA port or so - no HD is recognized anymore. I already tried to disable the Internal GPU, HD Audio etc. everything in BIOS but it doesn't help.. Seems this shitty board can only run 3 cards at once.
did you update the bios? helps with some boards to get a 4th or 5th card working, what brand is it?
Yes, board is at latest bios, gpus are all stock and sapphire nitros
I have tried the MSI Z170 and the ASUS Z170 models and had the same issues along with burning one out after undervolting some of the gpus. After hours of trying got 5 gpu's to work, but I will NEVER get those motherboards again! I eventually took the motherboards back.
Yeah I wasnt aware they are THAT bad.
Do you remember how you got 5 working?it fails for me with the 4th already
Do you have usb risers? If not this would be the first step to put usb risers on. Next, go into the computer setting and make sure that the 4th gpu is not in the system file as disabled. Check the Bios for the setting for pcie and set the generation to auto. Those are a few things that I can think of right off hand.