Quote from: Schrankwand on October 31, 2013, 01:41:33 PM

Quote

All the things are working very good with no problems.
There is only one problem: It will take about 4 weeks. Then the energy costs will be higher than the earnings.

WTF?

Lets do some math, maybe im just going nuts here.

150 watts for the ventilator

XX Watts for the pump, you didnt write about that.

around 110 watts per bitburner board, coming up to around 5300 watts
This means, we are talking 5500 watts and a hashrate of 420gh/s.

"calculating"

My calc is that you need around 3900 kw/h per month. Basically, this equipment burns on the level of a normal family per month.

How expensive is that? Well, in my country, I pay around 25 eurocents per kw/h. Coming up to 975. That us quite expensive already.
Your mining profits right now, per month, are around 3200 USD, around 2400. Don't want to be annoying, but the difficulty would have to double again, to get you trouble. Not that it cannot happen, and it WILL likely happen, but how far do you think this is gonna go? At least you won't loose profits in the next four weeks I guess. You could even take doubling the diff right now to be profitable...

If the difficulty rises 40% this time ( 5 days) and next time ( 5+ 10 = 15 days) then it´s 96% highter than today. In this case the 4 weeks are only 15 days....
And yes, if I could make the decision again to buy or not to buy the chips and bitburners months ago with the knowledge of today, I wouldn´t have them.