Socket 2011 3 motherboard series asus sabertooth form factor atx supports multi core processors 18 core compatible cpus intel core i7 extreme edition processor codename haswell e chipset intel x99 cpu support to 160 watt memory slot 8 ram operation mode quad channel ram type ddr4 memory clock speed 2 400 mhz specification pc4 19200 maximum memory expansion 64 gb pcie 30 pcie 20 support number of pci x x 16 slots 3 number of pci x x 1 slots 1 n