Because of that choose little slower kit.
For me, for now 2666 is OK.
I like to see Dominator Platinum memory, I had and DDR3 and now DDR4.
Special Edition is perfect, CORSAIR DP Blackout my favorite DDR4 kit on market, it;s not only for 100 Series Chipset.
CORSAIR launch Dual Channel for 100 Series and Quad Channel for X99. But Dual Channel will work and on Z270.
Great and rear kits, if someone have chance It's not wasting of money.
Really bad because CORSAIR didn;t had them when I searched for DDR4, I would bought CMD32GX4M4C3200C14M Quad Blackout without thinking.
In perfect condition he should work on X99 on 3200MHz with 14-14-14 1T latency.
I can bet they will fit even on AMD AM4 X370.
And so good kit I would move on all platforms with DDR4.
Manual tweaking, don't even need necessary to be overclocked constantly, lower timmings and no problems.
Improvement is similar.