ASUS P9X79-E WS Detailed | techPowerUp
It looks like the void left by lack of socket LGA1150 motherboards is being filled by new LGA2011 HEDT ones, with ASUS joining in with the P9X79-E WS. The board is so big and feature-packed that its designers labeled it a workstation board that's built in the SSI-CEB form-factor (should fit in full-ATX cases that have room for EATX). The board features a 10-phase CPU VRM, seven PCI-Express 3.0 x16 slots, which are wired to the CPU through a couple of 48-lane PCI-Express bridge chips, support for 128 GB quad-channel DDR3 memory, six SATA 6 Gb/s ports (two from the X79 PCH, four from third-party controllers), four SATA 3 Gb/s ports, a couple of eSATA 6 Gb/s ports, four USB 3.0 ports, FireWire, 8-channel HD audio, and two gigabit Ethernet interfaces, which are each backed by Intel-made PHYs.
ASUS P9X79-E WS: Mother of all Sandy Bridge-E boards? by VR-Zone.com