In some ways, the more fun fact (which I had known and forgotten) was that it was built for SGI. <offtopic digression> Damn they made good (albeit expensive)

In some ways, the more fun fact (which I had known and forgotten) was that it was built for SGI. <offtopic digression> Damn they made good (albeit expensive) computers back in the day. Some of their pricing was even crazier than the 486SX (a DX chip with a laser run through its math coprocessor) which at least started as reclaiming processors which failed QA. For example, the Challenge DM could be converted into a more expensive model (that allowed for more expansion) simply by removing a single screw that shorted out a portion of the backplane. We called it the $10,000 screw. An SGI salesperson told us about it (and then sold us an expansion board which worked fine). </offtopic digression>