30 May '15, 2am

The Most Powerful Bitcoin Mining Rig Yet

The Most Powerful Bitcoin Mining Rig Yet

In days of yore, one could mine Bitcoin without much more than an AMD graphics card. Now, without specialized hardware it’s unlikely that you’ll make any appreciable headway in the bitcoin world. This latest project, however, goes completely in the other direction: [Ken] programmed a 55-year-old IBM mainframe to mine Bitcoin . Note that this is technically the most powerful rig ever made… if you consider the power usage per hash. Engineering wordplay aside, the project is really quite fascinating. [Ken] goes into great detail about how Bitcoin mining actually works, how to program an assembly program for an IBM 1401 via punch cards, and even a section about networking a computer from this era. (Bonus points if he can get retro.hackaday.com to load!) The IBM boasts some impressive stats for the era as well: It can store up to 16,000 characters in memory and uses binary-code...

Full article: http://hackaday.com/2015/05/29/the-most-powerful-bitcoin-...

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