Re: What is the limit? (was RE: multi-homing fixes)

[David Lesher <wb8foz () nrk com>]

Unnamed Administration sources reported that Alex Rubenstein said:
> I recall something about liquid (something, could be nitrogen, or perhaps
> even mercury) that was chilled; PC Boards were then submersed in the
> liquid to keep cool.
>
> Maybe on Crays?

Yep.

As I recall, some crays used H20 to cool side rails that clamped
onto the boards' edges. Other used some kind of CFC piped directly
onto the boards.



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