The following results show the different performance levels I was able to achieve with the G.SKILL Ripjaws 4 3000 MHz kit, as well as the performance by just enabling XMP in the BIOS of my ASUS X99 DELUXE, combined with the reference JEDEC 2133 MHZ profile for a set of baseline numbers. As shown by the results below, higher memory speeds pay off in all cases.
CineBench R11.529
HandBrake Encoding
PCMark 7
PCMark 8
SuperPi
WinRAR
wPrime