As long as the difficulty is lower than 800 million (assuming a btc/USD price of 100$), those devices make profit.
"The greatest shortcoming of the human race is our inability to understand the exponential function"You do realise that 800 million difficulty is less than six doublings from 19,339,258 right?
And with difficulty growth @ 33% a month (or more!) difficulty is doubling pretty much every three months.
I will let you work out the maths of how many months six doublings will take
M
Sure, but you are asuming the increase will be 33% every month? How would it. The ROI nearly all devices would be negative, so who would buy them?
The ASIC's received earliest with the low energy use per G/H will keep going, all Avalons and ASICminers will stop.
This will only leave BFL customers who got miners now and in the next 2-3 months going, unless someone launches something lower power per G/H.
Then people will pile into that too.
Eventually unless the surviving ASIC manufacturers limit supply onto the market to match hashrate (thus controlling difficultly increases) then it will all go pop.
And the reason is humans are dumb and gready and don't understand the exponential function. This same scenario has happened in every market ever traded.
And BTC rise in $$$ won't stop it. Hashrate will keep rising to eat up the $$$ until the bubble pops.
We have less than two years until this happens. And it will happen. Anyone buying anything other than BFL currently is nuts.
M
