The Dreamcast[a] is a home video game console released by Sega on November 27, 1998 in Japan, September 9, 1999 in North America, and October 14, 1999 in Europe. It was the first in the sixth generation of video game consoles, preceding Sony's PlayStation 2, Nintendo's GameCube and Microsoft's Xbox. The Dreamcast was Sega's final home console, marking the end of the company's 18 years in the console market.

Technical Specs:

CPU: 128-bit Hitachi SH-4 RISC processor (200MHz 360 MIPS)
Graphics: NEC CLX2 processor
RAM: 16MB, 8MB Video RAM, 2MB Sound RAM
Colors: 16.7 million
Polygons: 3 million per second
Game Media: 1.2GB GD-ROM, 12x access speed
Resolution: 640x480 pixels
Sound: Yamaha 64 channel
Operating System: Custom Windows CE with DirectX support*
Modem: 56Kbps (US/JP NTSC), 33.3Kbps (PAL)

Source: http://www.cyberiapc.com/vgg/sega_dreamcast.htm

Here is an ad

Here is a minidocumentary on the rise and fall of the console

Here is Heavy Metal Geomatrix...one of my favorite titles!

Here are some of the best games. Man....these still look great!