Windows XP vs Windows Vista vs Windows 7

2001 vs 2007 vs 2009.

XP Specs:
Intel Core 2 Duo E7400 @2.80GHz
2GB RAM
160GB HDD
Windows XP Professional SP3 (32-Bit)
PC: 2009 Custom Built

Vista Specs:
Intel Core 2 Duo E6400 @2.13GHz
2GB RAM
320GB HDD
Windows Vista Home Premium SP2 (32-Bit)
PC: HP Pavilion m7747c

7 Specs:
Intel Core i7-2600 @3.40GHz
8GB RAM
640GB HDD
Windows 7 Professional SP1 (64-Bit)
PC: Dell Optiplex 790 DT