Efficiency in Bitcoin mining (Part 2)
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Butterfly Labs is one of the companies that sell ASIC-based Bitcoin miners, machines that compute SHA-256 very quickly. The smallest, ‘Jalapeño’, computes 5 GH/s which is about 5 billion hashes per second, its price being $274. The prices for larger ones (500 GH/s) can even go as high as $22, 484.