The Spondoolies SP20: Better Value than the AntMiner S5?

Spondoolies unfortunately shut down on May 4th 2016. In late 2014, they released the SP20.
Spondoolies crammed a total of eight 28nm RockerBox ASIC mining chips onto 2 circuit boards within a compact form factor.
The SP20 is a neat miner, powerful for its low price with a size and noise level suitable for home miners.
The major drawback is its relative inefficiency. The SP20 draws a lot of power for its hashrate, which is low by modern standards.

Power Supply

Any ATX PSU of sufficient wattage (1200W+) will run the SP20 without problems.
In keeping with the SP20’s flexible design, you may also use dual lower wattage (750W+) PSUs to replace a single powerful PSU.