More Bitcoin details
The work the computers do is akin to guessing at a lottery number. The faster the computers run, the better chance of guessing that right number and winning valuable coins. So mining entrepreneurs are buying chips and computers designed specifically — and only — for this work. The machines in Iceland are worth about $20,000 each on the open market.
The energy required to run these computers is huge, and has led to criticism that Bitcoin mining is wasteful, not to mention socially useless. But Mr. Abiodun prides himself on using renewable power, at least in Iceland.”