Just saying...
Those look like various IBM redundant PSU. At least 1460 watts, I'd say. FYI you can get 2000 watt bladecenter PSU on ebay pretty cheap! ($60 or less).
you are right,it is DELL ,very cheap, 600 * MSI 7850 1G , About 240Mhs and 250LTC/day
Let's say you spent the low-end of $200 for your 7850 cards. Those *alone* would cost you $120,000.00. Never mind the motherboards, CPU, RAM, ELECTRICITY, etc. You may mine upwards of $580.00 daily ... but that's still a pretty long payoff.
What I want to know is, where did you get the startup capital to do this? Where do you buy 600 MSI cards? I am assuming that took you a while. I would think that even high volume retailers don't keep that quantity of a particular card on-hand. And as others are wanting to know - what does your electric bill look like? I hear stories of "free electricity", but trust me that doesn't last. Even if your rental contract doesn't have an abuse clause, any judge in his right mind would sign the eviction order to throw you out. And if you live in the States, you can expect a visit from the DEA. :-)
hey hey,It is in china,Electricity is cheap,and you can find a place do it easy ,example Small Hydropower or small factory.This began in 2012 with some people, the cost has been recovered in April 2013 , and buy 600 cards is very easy here(because so many cards are made in china...).
Electricity is $ 0.07 / KWh, 6 * 7850 probably consumes at 900W, so one day the electricity is 2160KWh * $ 0.07 = 151.2 USD per day, Electricity is about one-third of income.