Quote from: Bitdust on January 22, 2014, 02:20:32 PM

Quote from: Ozymandias on January 22, 2014, 02:13:31 PM

Quote from: wasubii on January 22, 2014, 01:45:36 PM

Quote from: kslaughter on January 22, 2014, 01:30:16 PM

Quote from: kactech on January 22, 2014, 11:20:47 AM

1.9GH/s and 2.5W, estimated end of profitable hashing:
0.20 $/kWh - July
0.15 $/kWh - August
0.10 $/kWh - September
One month extra if BTC at $2k. From selling point, it can make wide customer base for future 28nm but needs high volume, no preorders, sell at costs, deliver on time.

How about 0.017 $/kWh

A simple interpolation of his figures would suggest mid-July.

But that assumes his maths above is correct.

I'd like to see the figures on this - what difficulty increased have you presumed kactech? Please show us your calculation.

0.017 not 0.17

What's the point of calculating electricity costs when none of the significant costs (chips, boards, BOM ) are known?

I tried to look for the absolute limits of rational use as BTC miner for potential customers, hardware(if not broken) still can generate heat, lulling hum(?), mine alts, can be sold.