5. Experimental Systems Core2 2.6 GHz 4 April 2007 System x3550 IBM E Core2 2.13 GHz 2 April 2007 Optiplex GX745 Dell D Netburst 3.6 GHz 2 July 2006 xSeries 336 IBM C Netburst 2.8 GHz 2 Sept 2003 DL380 G3 HP B Netburst * 1.0 GHz 1 April 2001 GX150 Dell A Core Total Cores Acquisition Date Model Mfr ID