Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!rutgers!umn-d-ub!cs.umn.edu!ux.acs!clarson
From: clarson@ux.acs.umn.edu (Chaz Larson)
Newsgroups: comp.sys.mac.hardware
Subject: Re: Apple is dumping 120ns SIMMS into SE/30s
Keywords: cheap chips
Message-ID: <1060@ux.acs.umn.edu>
Date: 1 Feb 90 22:43:24 GMT
References: <15@hite386.UUCP>
Reply-To: clarson@ux.acs.umn.edu (Chaz Larson)
Organization: University of Minnesota, ACSS
Lines: 24

In article <15@hite386.UUCP> steve@hite386.UUCP (Steve Hite) writes:
>
>   Why does Apple put low speed memory chips in their high speed SE/30s? 
>   Are they too cheap to use 80ns?  
>
>   Needless to say, I'm not too smart about hardware. But it seems to me
>that if I had bought only 4 megs of 80ns memory (upgrading the SE/30 to
>5 megs total) then I would have to replace the 1 meg of 120's with 80's or
>my fastest memory access speed would still only be 120ns.  Hmm...that stinks,
>Mr. Pepsi!! 
>

I am under the impression that the SE/30-II-IIx-IIcx machines are designed for
120ns RAM, and can't take advantage of faster SIMMs, so that your 8 megs of
80ns RAM are only being addressed by the OS at 120ns anyway.

<chaz>


-- 
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                 Chaz Larson - clarson@ux.acs.umn.edu
            "Hey, I'm no Jack Kennedy..." - Flaming Carrot
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