Israeli-startup SolidRun is launching an updated model of its CuBox mini PC called the CuBox Pro. The small desktop computer measures 2 x 2 x 2-inches and weighs a mere 91 grams. The CuBox Pro is not only small in size, it also sips a mere 3 watts at full load. It comes pre-loaded with Ubuntu Linux, but the CuBox Pro can be loaded with alternative operating systems by way of a microSD card. The hardware is nothing spectacular on the performance front, but it is capable of 1080p HD video playback. Interestingly, Youtube user rabeeh3000 reported that the CuBox Pro draws less than 2.5 Watts while playing a HD movie in XBMC.
Speaking of hardware, the CuBox Pro is powered by a Marvell ARMADA 510 SoC clocked at 800 MHz. It is supported by 2GB of DDR3 memory, and internal storage is handled by a microSD card slot.
Rear IO on the CuBox Pro includes two USB 2.0 ports, one HDMI video output, one eSATA connector, one Gigabit Ethernet port, DC power jack, and a single S/PDIF audio output on the side of the case. Further, the CuBox Pro has an infrared receiver, which will enable remotes to be used with media center software.
The CuBox Pro is slated to be available sometime in January for $159. Alternatively, the original CuBox with 1GB of DDR3 is available for $139. Admittedly, it is a bit pricey considering there are cheaper options like the Raspberry Pi but you are getting a complete OEM system (whereas you would have to add an SD card, USB infrared receiver, and case to the price of the Pi).
You can find more information abou the CuBox computer on the SolidRun website.