Meet the Circumference: a miniaturized data center in a box that comes with everything you need for software development and educational projects. It is available in 8+1 and 32+1 mode configurations. This system is based on the Raspberry Pi and UDOO x86 platforms. You get command line tools and a Python API for cluster control and energy use logging.
The Circumference comes with up to 4x software controlled fans, 8x auxiliary power ports, and 50x gigabit Ethernet switch ports.