These parts have potential issues/incompatibilities. Some Intel X79 chipset motherboards may need a BIOS update prior to using Ivy Bridge-E CPUs.
http://support.asus.com/cpusupport/detail.aspx?SLanguage=en&p=1&m=X79-DELUXE&cpu=Core%20i7-4930K%20(3.4GHz,%20L3:12M,%206C,%20HT,%20130W,%20rev.S1)&pcb=ALL&sincebios=0401&memo=