One of my favorite platforms over the past two years has been the X79. The X79 chipset was a new workstation platform designed to replace Gulftown. At launch the new processor was called Sandy Bridge-E and shared a variety of featured found in the desktop variant including as an improved memory controller, onchip PCI Express and the extremely popular, and often hated, BCLK (Base Clock). Many of the differences were quite substantial and included twice as many memory channels, twice the PCI Express lanes and up to six physical processor cores in a larger LGA2011 package.

Link