Quad-core Xeon X3380 3.16GHZ Intel Xeon X3380 3.16 GHz 1333 MHz 12 MB Socket 775 CPU General Features: Intel Xeon Processor X3380 3.16 GHz CPU speed 1333 MHz bus speed 12 MB L2 cache Socket 775 Quad-Core 64-bit instruction set 45 nm Lithography 93W maximum TDP (Thermal Design Power) 0.8500V - 1.3625V VID voltage range Intel Virtualization Technology (VT-x) Intel 64 architecture Enhanced Intel Speedstep Technology