Frequency settings in the main panel allow for an underclock from to a max of which is the default setting. More advanced users can SSH into the control software and modify the base CGMiner with 3rd party firmware to accept higher freq. Bitcoinist does not suggest using 3rd party firmware or overclocking do so at your risk.
Due to the less dense two board design when the Avalon 6 overclocking it stays cooler allowing for more overhead. The other big benefit of the RPi control software is that is it can control 40 to 50 miners at once. This ability makes for easier large data center management. Instead of 50 network cables, one for each miner you only need one. This ability cuts down on deployment costs. Furthering data center management ease is the data center software that Avalon has to manage all the RPi controllers.
The software helps you monitor uptime, change settings across the entire data center. Bitcoinist will be reviewing this software and its process shortly. At an advertised 0. The Avalon 6 we tested was only pulling at the wall an average of watts while performing at 3.
The single fan operates in a pull system within the housing. This airflow method allows for a smooth airflow over the heatsinks and boards.