Firday puzzle

How come the Xbox is only a:Intel Celeron 733 MHz CPU, an nVidia GeForce 3MX, 64 MB of RAM, a 8/10 GB hard disk, a DVD drive and 10/100 EthernetYet my PC with a AMD Athlon chip, 128 mb graphics card still hasnt got enough power to run certain games as well as the Xbox????Yes yes i know it might have something to do with the fact the Xbox isn't runnin Windows, IIS, CFMX, SMTP etc etc......but still an Intel Celeron 733 MHz !!!!!