I just noticed this really amazing little computer called the ChimpBox. Only about the size of an external DVD drive, it seems to offer amazing performance for such a small package, starting at US$299. The pre-installed operating system is PCLinuxOS.
Here's a brief technical blurb:
Fully assembled, Fan-less, Silent Mini PC featuring the A68N-5000 Mini-ITX motherboard with AMD Fusion APU A4-5000 Quad-Core Processor. With an Integrated Graphics Processor AMD Radeon™ HD8330 This PC is able to provide plenty of processing power for all of your everyday computing needs in a very convenient, compact and energy-efficient package. Unit comes with PCLinuxOS installed. More details at http://chimpbox.us/
Here's an independent review of the motherboard:
http://www.hardwareheaven.com/2014/10/b ... 00-review/
I have no affiliation with the manufacturer.