My system has an LGA 2011 GA-X79S-UP5-WIFI motherboard and just upgraded my GPU to the GTX 1080 and want to upgrade my CPU. I use the system primarily with Adobe Premiere Pro to edit 1080 and 4k for video. The motherboard has an intel C606 chip and supports Xeon. Am I better off with a higher clock speed 6 cores with the i7-4960x or the 8 core on the xeon E5-2687W they both cost about the same used. Here is the link to the supported CPU's on Gigabyte's website. https://www.gigabyte.com/Motherboard/GA-X79S-UP5-WIFI-rev-10#support-cpu