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Date:      Mon, 21 Sep 1998 08:39:30 -0600 (MDT)
From:      "Mark J. Sommer" <msommer@argotsoft.com>
To:        mistwolf@ethereal.net (Jamie Norwood)
Cc:        jjohnson@spry.com, mahe@twam.com, freebsd-questions@FreeBSD.ORG
Subject:   Re: mixing RAM for FreeBSD ?
Message-ID:  <199809211439.IAA10132@argotsoft.com>
In-Reply-To: <19980921061410.A29467@ethereal.net> from Jamie Norwood at "Sep 21, 98 06:14:10 am"

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Another thing to keep in mind is that if you can mix, you'll probably slow
your system down.  Most motherboards that allow mixing will run at the slower
SIMM speeds.  I.e. SDRAM typically less than or equal to 12ns, SIMMs typically
less than or equal to 60ns, the result is the overall machine will run its
memory bus at the 60ns mark.

> Actually, refer to your mommy board manual; I have an Iwill board from a while
> back that has been cohabitating a SDRAM DIMM and 2 SIMMs for well over a year 
> now; but the ASUS board in the game machine specifically says not to (The Iwill
> manual says it is OK.) 
> 
> When in doubt: RTFM :)
> 
> Jamie
> 
> > That is a hardware issue. DIMMS and SIMMS require different voltages, mixing
> > both would fry your board, cards, cpu and everything that makes it all cool
> > :)
> > 
> > -----Original Message-----
> > From: Loic Mahe' <mahe@twam.com>
> > To: freebsd-questions@FreeBSD.ORG <freebsd-questions@FreeBSD.ORG>
> > Date: Monday, September 21, 1998 12:04 AM
> > Subject: mixing RAM for FreeBSD ?
> > 
> > 
> > >Hello,
> > >
> > >I'm increasing the RAM for our FreeBSD box. Does FreeBSD allows to mix
> > >SIMM (EDO) and SDRAM ?
> > >The mother board (VX Pro 512k) doc says no, but perhaps is this only a
> > >Windows 95 limitation ?
> > >Thanks in advance.
> > >
> > >Loic Mahe
> > >--
> > >+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
> > >TWAM Informatique                                          www.twam.com
> > >tel/fax 05-61-24-65-66/66-30                              mahe@twam.com
> > >
> > >To Unsubscribe: send mail to majordomo@FreeBSD.org
> > >with "unsubscribe freebsd-questions" in the body of the message
> > 
> > 
> > To Unsubscribe: send mail to majordomo@FreeBSD.org
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> 
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