Newsgroups: comp.sys.amiga.hardware
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!metahawk
From: metahawk@itsgw.rpi.edu (Wayne G Rigby)
Subject: Re: A3000: 16mhz vs. 25mhz
Message-ID: <2+9gfvj@rpi.edu>
Keywords: A3000
Sender: Wayne Rigby
Nntp-Posting-Host: jec414.its.rpi.edu
Organization: Rensselaer Polytechnic Institute, Troy NY
References: <11064@uwm.edu> <3858@ux.acs.umn.edu> <5308@network.ucsd.edu>
Distribution: usa
Date: 9 May 91 06:24:49 GMT
Lines: 28

In article <5308@network.ucsd.edu> simon@ivem1.uucp (Simon) writes:
>Does anyone know the exact difference between a 16mhz A3000 and
>a 25 mhz A3000 other than these numbers?  Another words, is there
>a way that I could upgrade a 16mhz A3000 to a 25mhz A3000, by say
>replacing the crystal or the 68030 chip.  I'd like to get the
>16mhz A3000 w/ PowerUp program, and upgrade myself to a 25mhz.
>
>Anyone? Anyone? Anyone? Anyone? Anyone? ...
>-Simon
>
>-- 
>*   Simon Lee                   *   Southwestern Regional Resource for  *
>*   simon@ivem1.ucsd.edu        *   Intermediate Voltage                *
>*   sulee@ucsd.edu              *   Electron Microscopy, UC San Diego   *

Nope, can no do.  Replacing the crystal and/or the 68030 would be a BAD idea.
The only way you could upgrade to a 25 MHz machine is to get a 25 MHz
accelerator board.  The only boards I've heard for the 3000 are 68040
25 MHz.  So, my suggestion would be to either go for a 25 MHz 3000, or
get a 16 MHz and upgrade to an '040.

PS: thanks for the dissemblance on the bus/timing limitations Dave Haynie!

                                   Wayne Rigby
                                   Computer and Systems Engineer (in training)
                                   Rensselaer Polytechnic Institute
                                   metahawk@rpi.edu