HEWLETT PACKARD (PZ475UA#ABA) nx9600,P4630(3.0),WXGA,100GB(5400),1GB(1 Intel Pentium 4 630 3.0 GHz processor 1GB 400MHz DDR2 SDRAM (2GB max) 100.0 GB - 5400.0 rpm HDD 17.0 in TFT active matrix display with 1680 x 1050 Resolution Microsoft Windows XP Professional OS