ASRock X79 Extreme11

ASRock X79 Extreme11 @ Hardware Secrets

"The ASRock X79 Extreme11 is probably the most complete motherboard released so far for the LGA2011 platform. It includes seven PCI Express 3.0 x16 slots, eight additional SAS/SATA-600 ports, eight USB 3.0 ports, and a high-end audio controller. The most important feature of this motherboard is the presence of two PLX PEX8747 chips, which allow you to install up to four PCI Express 3.0 video cards truly working at x16 speed."