Raspberry Pi Board with a Broadcom BCM2835 GPU
The Raspberry Pi is a small board priced at around USD $25 and that embarks an ARM CPU and an OpenGL ES 2.0 capable GPU (a Broadcom BCM2835). Raspberry Pi is actually the core of a Linux-based computer created to teach programming. This board should be available at the end of November 2011.
Raspberry Pi features also a HDMI and composite outputs (for the video), a standard 3.5mm jack for the audio, and an USB port. The board is powered by an external AC adapter, and the power draw of the whole board is around 1W at full load!
Even if the Raspberry Pi is not a gaming platform, it can run Quake 3 Arena at around 20 FPS. Not bad for a 25$ system!