Full Details from Amazon.com : http://www.amazon.com/gp/product/B00180DR74?tag=onigi-20
Intel Cpu Xeon Quad Core E5472 3.00Ghz Fsb1600Mhz 12M Lga771 Tray
Product Type - CPU
Processor Type - Intel Xeon
Clock Speed - 30 GHz
BusCore Ratio -- 75
L2 Cache Size -- 12 MB
