In practice Avalon draws 620 Watts and runs at 66 GH/s [1]. And let me introduce a few points to consider for an inspired by your calculation soon-to-be miner

In practice Avalon draws 620 Watts and runs at 66 GH/s [1]. And let me introduce a few points to consider for an inspired by your calculation soon-to-be miner :) 1. BFL [2] and whoever else is able to produce an ASIC system start shipping very soon. All this hash power will skyrocket the difficulty, eventually decreasing the profits to today's GPU levels. 2. Volatility of BTC varies greatly and can be anything in a few months term. As I recall, the first gold rush happened in 2011, when GPU miners appeared. BTC peaked at over $30 in June and was less than $5 by November. 3. If you order your system now, you will likely get it in May if not later. Pre-orders started last summer and they're still waiting. Happy mining :) [1] http://garzikrants.blogspot.com.es/2013/02/avalon-miner-power-usage.html http://garzikrants.blogspot.com.es/2013/02/avalon-miner-powe... [2] http://www.butterflylabs.com/ http://www.butterflylabs.com/