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Article #3072Re: ETA10 (was Re: Surges)
From: Peter Desnoyers
Date: Mon, 20 Nov 1989 16:59
Date: Mon, 20 Nov 1989 16:59
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In article <3217@convex.UUCP> phillips@convex.com (Steve Phillips) writes:
> The ETA10-E and ETA10-G machines were not LN2 cooled to prevent the
> gate arrays from melting. While it is true that the LN2 removed the
> heat generated, that was not the reason that LN2 cooling was chosen.
> They were LN2 cooled because the gate delays were reduced by a factor
> of 0.6 at those temperatures.
Actually, isn't LN2 supposed to be a pretty lousy thermal conductor? Just
because it's cold doesn't mean it's a good coolant :-)
Peter Desnoyers
Apple ATG
(408) 974-4469
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!gem.mps.ohio-state.edu!apple!apple.com!desnoyer From: desnoyer@apple.com (Peter Desnoyers) Newsgroups: comp.arch Subject: Re: ETA10 (was Re: Surges) Message-ID: <5290@internal.Apple.COM> Date: 20 Nov 89 16:59:37 GMT References: <3217@convex.UUCP> Sender: usenet@Apple.COM Organization: Apple Computer, Inc. Lines: 13