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Article View: comp.sys.ibm.pc.hardware
Article #20040

Re: Run a 486/33MHz CPU at 40 or 50MHz?

#20040
From: Carl Heinzl
Date: Tue, 12 Jan 1993 16:24
24 lines
1564 bytes
>|> Now the question is that how far you can increase the speed. There is
>|> no rule here, it may run at only 1% or as high as 30% above the rated
>|> speed.

>Are DX2's as push-able ad DX's?  I.E. would you be likely to be able to
>successfully raise 33mhz to 40 mhz, and with a DX2-66 have 80mhz internally?

Very doubtful.  Remember, when you're pushing a 33 to 40 you're
pushing a chip that was actually designed to run at 50 Mhz but this
particular part didn't make the cut (at 50).

The real question to ask would be... "Has anyone successfully pushed a
DX50?  And to what speed.  Of course the inherent problems with this
scheme is that most motherboards are only designed to run at a maximum
of 50 Mhz so it would be difficult to tell if the CPU is failing or if
the motherboard is inducing the failure.

Be sure to change the bus clock speed divider when pushing the CPU
speed or you may notice a failure due to the increased speed of
peripheral cards.

-Carl-
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Message-ID: <CARL.93Jan12112416@atlantis.Cayman.COM>
Path: arc1-ca.pugleaf.net!sparky!uunet!psinntp!cayman!carl
References: <1993Jan8.100550.9995@ac.dal.ca> <1993Jan8.172942.7869@news.clarkson.edu> <up47198@zola.esd.sgi.com>

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Path: arc1-ca.pugleaf.net!sparky!uunet!psinntp!cayman!carl
From: carl@Cayman.COM (Carl Heinzl)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: Run a 486/33MHz CPU at 40 or 50MHz?
Message-ID: <CARL.93Jan12112416@atlantis.Cayman.COM>
Date: 12 Jan 93 16:24:16 GMT
References: <1993Jan8.100550.9995@ac.dal.ca> <1993Jan8.172942.7869@news.clarkson.edu>
 <up47198@zola.esd.sgi.com>
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In-reply-to: blean@rwb.esd.sgi.com's message of 12 Jan 93 05:46:42 GMT
bcc: carl