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From: awessels@ccwf.cc.utexas.edu (Allen Wessels)
Newsgroups: comp.sys.mac.system
Subject: Re: SE/30 vs. IIsi
Message-ID: <38419@ut-emx.uucp>
Date: 18 Oct 90 03:51:48 GMT
References: <3725@media-lab.MEDIA.MIT.EDU>
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Reply-To: awessels@ccwf.cc.utexas.edu (Allen Wessels)
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Organization: The University of Texas at Austin
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In article <3725@media-lab.MEDIA.MIT.EDU> das@media-lab.media.mit.edu (David Sheppard) writes:
>I'm trying to decide whether to buy an SE/30 or Mac IIsi.
>From what I've read, they are basically similar:
>       cpu  speed    max memory   slots  pmmu   fpa     floppy  
>SE/30  030  16MHz  8MB(8 slots)   1 PDS  (030)  68882   1.44MB
>IIsi   030  20MHz 17MB(4 slots)  si-slot (030) optional 1.44MB


The SE/30 will take 4 meg SIMMs, sot can be upgraded to 32 meg.  The si has
1 meg on the motherboard and 4 SIMM slots.

>
>With a PDS or NuBus adaptor, the si seems to be a 20% faster,

As I understand it, the si video is like the ci.  It shares RAM.  Apparently 
the video can access the 1 meg onboard while the cpu is accessing the SIMM
memory.  I'm not a tech, but this is supposed to slow the machine down in 
some cases.

I think the SE/30 is a better option.  If I outgrow a particular video card,
I can sell it and replace it.  Expansion capacity to 32 meg (128 in theory if
the SIMMs are designed right - according to myanual) is nice and roomy.  I
Portability is handy - I can unplug it, put keyboard/mouse in one hand and the
box in the other and I'm off.  If necessary, I can buy a Nubus expansion box
running out of the PDS.