geeze what motherboard can do 16 gpus?
With any standard motherboard and some pcie multiplier you can do same thing !
Its been asked many times and he is not giving up the gold. The motherboard is a MSI Z97 gaming 5 but he did his own bios and very low level linux kernel changes.
Not quiet, but the prototype systems I have run a Z97 variant. The host boards for the production systems will most likely be a Z170 or C236 board.