Re: Significant differences btw IPC and IPX?

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From: Craig Dewick
Date: Wed, 09 Sep 1998 00:00

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In <35F521D3.A4EFB4EE@quay.ie> Paraic O Ceallaigh <poc@quay.ie> writes:

>Apart from B&W Frame Buffer and possible slower CPU - are there any
>other significant differences between IPC and IPX (as shipped from Sun).

Yes, there are very significant RAM differences.

IPX's can support more RAM (up to 64 meg on-board) than IPC's (up to 48 meg
on-board), and both machines use different SIMM types.

IPX's use 4 or 16 meg 72-pin SIMM's with either single-bit parity or full
parity (parity variants can't be mixed). IPC's on the other hand use 1 or 4
meg 30-pin parity SIMM's.

Also, IPX's can be fitted with the Weitek PowerUp CPU upgrade, which
replaces the existing 40 MHz CPU with an 80 MHz one. IPC's cannot have their
CPU upgraded.

The only upgrade path common to both is replacing the CPU board with a
Sparc-5 clone board from Cycle Computer. These boards aren't cheap though.
8-)

Regards,

Craig.
-- 
            Craig Dewick. Send email to 'cdewick@lios.apana.org.au'
  Point a web browser at 'http://lios.apana.org.au/~cdewick/sun_shack.html' to
    access my archive of Sun information and links to other places. For info 
      about Sun Ripened Kernels, go to 'http://www.zeta.org.au/~craig/srk'

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From: cdewick@lios.apana.org.au (Craig Dewick)
Subject: Re: Significant differences btw IPC and IPX?
Date: 1998/09/09
Message-ID: <6t3ejq$30l$1@lios.apana.org.au>
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