Assuming $0.06 KW/h for electricity and free cooling, what would be considered the best investment in mining hardware?
New ASICs, or older less efficient hardware that might be able to be found cheaper (considering that it would still be profitable with overhead costs this low)?
I have been doing some math and it almost seems like a large quantities of Antminer S1's might be the best total hashrate / $ choice?
What are everyone's thoughts?
Depends just how much of the above you have. Probably always 1 step behind what is considered viable as the $/GH will be so low. S1s are slightly too early for that, but will be perfect in about 6 weeks and perfect to buy today.
I have a lot of power.
A 3-phase 200 amp panel, so potentially up to about 44 30-amp 240V circuits or over a hundred 20-amp 120V ones.
The cooling uses passive environmental cooling, so I need to decide on the hardware and get it ordered as it will likely only be able to operate from September -> May, then possibly be turned off for the summer. I would like to buy up as much older equipment that other people cannot run profitably and run with it for the entire period and then likely shut it all off come spring.
I'm sorry, what did you mean that it's slightly too early for S1's (but perfect to buy today? - and what would be a good price for a larger quantity of S1's? (say, 100-200 of them if I can find someone selling that many)?
