Article View: comp.sys.ibm.pc
Article #43180Re: 20 Mhz 386 SX (?)
From: Phil Ngai
Date: Tue, 27 Feb 1990 17:27
Date: Tue, 27 Feb 1990 17:27
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1507 bytes
In article <25E9799E.5768@maccs.dcss.mcmaster.ca> cs4g6ag@maccs.dcss.mcmaster.ca (Stephen M. Dunn) writes:
| I've heard that microprocessors are actually supposed to be able to run
|at up to 1.5x the rated clock speed. This doesn't make much sense to me,
|but that's what I've heard ... it may be wrong. But pushing a 16 MHz
Let me assure you that this is indeed nonsense. It is true that a
reputable semiconductor manufacturer will include some margin to allow
for the accuracy of the IC testers used, but the amount of the margin
depends on many factors and for a microprocessor is very unlikely to be
1.5.
You have to agree that if there was margin, they would sell as much
of it as they could.
Why can't people accept that if a device is rated at a particular
speed, then they should not exceed that speed?
--
Phil Ngai, phil@amd.com {uunet,decwrl,ucbvax}!amdcad!phil
A PC without DESQview is like Unix without ^Z.
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!samsung!uakari.primate.wisc.edu!ames!amdcad!pepsi!philReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!samsung!uakari.primate.wisc.edu!ames!amdcad!pepsi!phil From: phil@pepsi.amd.com (Phil Ngai) Newsgroups: comp.sys.ibm.pc Subject: Re: 20 Mhz 386 SX (?) Keywords: Citrus and how do you do it? Message-ID: <29306@amdcad.AMD.COM> Date: 27 Feb 90 17:27:02 GMT References: <1109@watserv1.waterloo.edu> <25E9799E.5768@maccs.dcss.mcmaster.ca> Sender: news@amdcad.AMD.COM Reply-To: phil@pepsi.AMD.COM (Phil Ngai) Distribution: comp Organization: Advanced Micro Devices, Inc. Sunnyvale CA Lines: 20