Actually, the cost is US$ 25, a lot less than the OLPC and it has just two connector, one HDMI and one USB.
Here is the picture of the $25 PC:

And now the same connected to a screen and a keyboard…

This computer, created by David Braben a game developper, once mass-produced could provide a computer to any student around the World.
The computer runs Linux, has a 700 Mhz ARM processor, 128 MB of memory on an embedded SD card and displays decent graphics with OpenGL 2.

New concept in the field of semi-portable desktop computer, the Revo (like revolution) from Acer offers good graphics capabilities for minimal configuration and
footprint.
Designed on the basis of the modest Intel Atom N230 and the powerful
graphics card from Nvidia Geforce 9400M, the Revo seems to be dedicated
to graphics for which it offers the HD 1080, a processing speed
acceptable for most games and as bonus a 3D controller similar to Nintendo’s
Wiimote. HDMI lets you connect to a TV or monitor, and thus turns it in fact into a
kind of console game.
The graphics capabilities of the computer are sufficient to run Vista and Seven.
Prices currently charged in the U.S.:
The most expensive comes with 10 games playable with a 3D joystick,
for example: Sonic Heroes, The House of the Dead 3, Midnight Club 2,
Heavy Weapon Deluxe, Crystalizer 2, Crazy Taxi III Crashday and Balance.
