Have the following setup:
CPU TR Pro 3975WX
RAM: 256GB Kit F4-3600C16Q2-256GVK running at 3200
3 x Quadro P 620 on slots 5, 6, 7
3 x Hyper M.2 Gen 4 SSD fully populated with Samsung (500 + 250 GB 980 Pro SSD) on slots 1,2,3
U.2 ports running in SATA mode, connected to icydock caddy running...