The inner workings

bitcoin 6
A bubbling liquid produced by 3M cools the ASIC chips.

This mine was purpose-built by Allied Control for clients based in China.

Kar-Wing Lau, Allied Control's vice president of operations, said the mine is cheaper to run and more efficient than many others because it uses a technology called immersion cooling.

Heat sinks and fans are typically used to disperse the heat generated by massed ranks of computer chips, but this Hong Kong mine is liquid-cooled using a product developed by 3M.

The processors used in the mine were build specifically for mining. They have no other function. "These ASIC chips, they can mine bitcoins and do nothing else," Lau said. "Given the pace of advancement, we need them to be constantly upgraded."

First published December 17, 2013: 4:46 AM ET

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