Article: Cooling and performance/watt

Article: What Do Overclockers and Supercomputers Have in Common?
By: rwessel (, October 15, 2011 9:56 pm
Room: Moderated Discussions
David ( on 10/15/11 wrote:
>First post here, and well-written article.
>You mentioned that traditionally only IBM mainframes used anything but air-cooling,
>but I recall reading that some Cray Mainframes used helium for cooling. Anyone
>here who worked on Cray mainframes that can confirm?

Helium would make a lousy coolant (except in liquid form, but that's a whole different* kettle of sea monkeys!).

The Cray-2, for example, put the circuitry in a tank of non-conductive fluorocarbon (one of 3M's Fluorinert line, specifically) for cooling.

*You'd probably be looking at Josephson Junctions at that point.
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TopicPosted ByDate
Article: Cooling and performance/wattDavid Kanter2011/06/21 12:19 PM
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