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Z790 Maximus Hero - CORSAIR Dominator Platinum 6600MHz (4x16Gb) Compatibility (XMP)

Level 7

Hi all!

Recently built a new machine with the following:

  • Mobo: ASUS ROG Maximus Z790 Hero (v0904)
  • CPU: i9 13900HK
  • GPU: ASUS TUF 4080 OC
  • RAM: CORSAIR Dominator Platinum RGB DDR5 RAM 64GB (4x16GB) 6600MHz (‎CMT64GX5M4B6600C32)

If I attempt to enable XMP (I or II), I'll get slight instability with games, usually resulting in crashes or BSODs. With no XMP applied, it is smooth sailing.

Curious if it's worth waiting out for newer bios versions that will fix this compatibility issue, or if I should bite the bullet, return my mem kit and get another?


Super Moderator


4x16 @ 6600MT is going to be very tough on stability. You may wish to try a higher MCVDD than what the board is applying in auto rules [advanced memory settings sub menu] . VCCSA [system agent] can also help but is less sensitive to  value changes than 12th gen.

The fact the QVL’s fastest kit in that density is 5600MT is telling enough. May want to lower the frequency and check stability in stress apps such as Karhu RAM Test.

If you are able to return the kit, consider purchasing one validated on the motherboard QVL:

13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090

Level 10

Good luck. Very unlikely to work. I wasn't able to get 4x16 working at anything above 4000mhz on the z690 formula. I'm not sure why these boards have 4 slots today.