The psu is also short if you get them to run.
Also the mobo has not been shown to use six cards people don't use that one.
is this your mobo?
http://asrock.com/mb/Intel/Z170%20Extreme3/
ASRock Super Alloy
Supports 6th Generation Intel® Core™ Processors (Socket 1151)
Digi Power, 8 Power Phase design
Supports DDR4 3866+(OC)
3 PCIe 3.0 x16, 3 PCIe 3.0 x1
Supports AMD 3-Way CrossFireX™, NVIDIA® Quad SLI™, SLI™
Graphics Output Options: HDMI
7.1 CH HD Audio (Realtek ALC1150 Audio Codec), Supports DTS Connect
6 SATA3, 3 SATA Express, 1 Ultra M.2 (PCIe Gen3 x4 & SATA3)
2 USB 3.1 10Gb/s (1 Type-A + 1 Type-C), 8 USB 3.0 (2 Front, 6 Rear)
Supports Full Spike Protection, ASRock Live Update & APP Shop
Can you get to bios? show the pcie settings.
do the risers work for the 3 smaller slots?
just set up the three cards with risers use the small slots then tell us if that works.
just set up the three cards with the big slots direct plug in then us if that works.
They moved it to alt coin. Give me a few minutes to look some stuff up.
