My Kingston HyperX sticks with Hyper ICs are running very good with my Asus Crosshair V 990FX.

They're doing more than DDR3-1800 with CL6 timings easily^^

906 MHz @ 6-6-5-15 22 1t @ 1.73v - 32m



929 MHz @ 6-6-5-15 22 1t @ 1.76v - 1m