CPU

• Based on PowerPC architecture
• 400 MHz clock speed
• Semiconductor process 0.18 micron copper technology
• Manufactured at IBM's Burlington, Vermont plants

Graphics Co-processor

• 128-bit custom chip designed by ArtX Inc. of Palo Alto, California
• Design headed by Wei Yen of ArtX, former head of N64 chip design at Silicon Graphics
• 200 MHz clock speed
• Semiconductor process 0.18 micron technology
• Embedded DRAM

System Memory

• No amount of RAM yet specified
• High-speed DRAM technology from Rambus
• Memory bandwidth of 3.2 GB/second

Software Medium

• Matsushita DVD technology
• Enhanced Counterfeit Protection
• Maximum capacity: 4.7 GB (assumed single-layer, single-sided)

Controller

• Shigeru Miyamoto is currently working on the controller
• Built-in rumbling
• Two analog buttons

Other Information

• No sound chip; sound is handled by co-processor (as in Nintendo 64)
• DVD movie playback capability
• Nintendo is claiming quick access time comparable to that of silicon cartridges
• Connectivity with Game Boy Color; most likely through infrared port
• Fully networkable; modem should be included along with internet software from Netscape

Information from IGN64 and various other sources.

That's all there is right now. Keep in touch for further developments.