The C2D E8400 based system (about midway down the page) may be quite similar in power usage terms to what you're planning to buy.
http://www.complang.tuwien.ac.at/anton/computer-power-consumption.html
http://www.zerohedge.com/article/correlation-sp-500-performance-fed-monetization-activities-start-qe
If so, when there is a major equity correction, will the Fed become the ultimate bagholder on behalf of the American people?
Much obliged, Ben.