From
http://www.xboxusersgroup.com/modules.php?s=&name=NS-Specs
* Intel Pentium III 733MHz processor technology with Streaming SIMD Extensions.
* 233Mhz custom-designed X-Chip NV2a, developed by Microsoft and nVidia.
* 64 MB of RAM (unified memory architecture).
* Custom 3-D audio processor.
* 8GB hard drive.
* 5X DVD drive with movie playback.
* Four game controller ports.
* Expansion port.
* Proprietary A/V connector.
* 10/100 MBps Ethernet.
* Broadband enabled.
* Modem enabled (optional).
* 6.4GB/sec Memory Bandwidth.
* 150 million micropolygons/particles per second.
* 150 million transformed and lit polygons per second.
* 100 million polygons per second sustained performance (shading, texturing).
* 4 simultaneous textures.
* Compressed textures available at 6:1 compression.
* Full-scene anti-aliasing.
* DVD movie playback.
* 1920x1080 maximum resolution.
* HDTV support.
* 256Audio channels.
* 3D Audio support.
* Midi/DLS2 support.