Windows XP is Windows 2000 with a theme. Though the difference in resources was Win2k could run on 32MB of ram, and XP ran on 256, despite being the same OS wi

Windows XP is Windows 2000 with a theme. Though the difference in resources was Win2k could run on 32MB of ram, and XP ran on 256, despite being the same OS with the same functionality, even the same drivers. If you had beefy enough hardware, which we all eventually did years after XP came out, it ran as fast and almost as stable as 2000. If you didn't mind the bland theme, and wanted higher FPS while gaming, with more responsiveness (less of a delay when double clicking on a window, for example) then running Windows 2000 over XP was a no brainer. In competitive first person shooter circles at the time, people preferred Win2k to XP for these reasons.