Who says not compatible?
To be certain, go to the g.skil web site and access their configurator.
Enter your motherboard and you should get a list of compatible parts.
I just tried, but theweb page is currently inaccessible to me.
TridentX will have a default 1333 speed which allows you to boot and get into the bios.
Once there, use a XMP setting to get your full speed.
Do not worry much about faster than 1866 speeds.
The higher speeds bring higher cas numbers and 1.65v which negates the faster speed in real apps.