[ROG Crosshair VI]

Easiest would be to stay with the 2666 DRAM Ratio and increase reference clock. Or you could try higher DRAM Ratio with 18-16-16-16-35 timings. You can check what others could do here https://docs.google.com/spreadsheets/d/1YSZB70P71Kd4iAyxSpAZf0lc2GmyALKJOQ7vA1MhV2s/pub?output=html&widget=true

 

Or stay 2400 DRAM Ratio thats work for me (2666 no post)

btw thx the info elmor this lead me to succes

 

Ram:

G.SKILL 16GB Trident Z DDR4 3200MHz CL16 KIT F4-3200C16D-16GTZB

Bios: 1002

BCLK: 133,6

CPU Core ratio: 29,25

 

3200MHz 16-18-18-18-18-38 1,4V