Re: MMX-upgrading

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Article #2068

#2068

From: Peter den Haan
Date: Wed, 12 Feb 1997 00:00

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Stephen Lee <slee@rahul.net> writes:

 >I went to a local PC dealer and he said that the 166-MMX can be
 >plugged into my socket-7 Endeavor board which only supports 3.3v.
 >
 >I would like to know if this is true.

It is patently false; you may want to avoid that dealer in the future.
I cite from the introduction to application note "AP-580 Voltage
Guidelines For Pentium Processors With MMX(TM) Technology":

    This application note is of particular importance due to the new
    core voltage of the Pentium processor with MMX technology. Its split
    voltage (2.8v core; 3.3v input/output) is in contrast to the Pentium
    processor's unified voltage (3.3v core and input/output).
    Motherboard designs must be modified to accommodate the Pentium
    processor with MMX technology's new core voltage. Refer to Pentium
    Processor Flexible Motherboard Guidelines (order #243187) for
    additional information.

Convince yourself: http://developer.intel.com/design/mmx/applnots/243186.htm

 - Peter

-- 
pieterh@sci.kun.nl                 http://thef-nym.sci.kun.nl/~pieterh/

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From: pieterh@sci.kun.nl (Peter den Haan)
Subject: Re: MMX-upgrading
Date: 1997/02/12
Message-ID: <5dscgh$dtl@pion.sci.kun.nl>
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References: <01bc0e20$34773060$7d0002c3@ripper> <32EFAB7B.E5@pagesz.net>  <01bc0ed2$8a1b57a0$2a262095@KAUFFMAM.vitro.com> <32F6EE46.7622@oce.nl>  <Pine.SUN.3.91.970211095516.18020A-100000@chris> <5dqoj2$9dg@samba.rahul.net>
Cc: slee@rahul.net
Organization: University of Nijmegen, The Netherlands
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