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Article #1593

Summary: Monitors and MacII performance?

#1593
From: Norman Graham
Date: Wed, 19 Jul 1989 02:21
45 lines
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The original post went something like this:

>Does the size of a MacII monitor influence the speed of the machine?
>(In other words, will a <MacIIcx:Dual Page Display> be slower than
>a <MacIIcx, Single Page Display>?) As a related question, does
>running multiple monitors degrade the MacII's performance?

I only got three responses so I won't bother to summarize. The 
responders were:

     Kenneth K.F. Lui	   claris!wet!tempest@ames.arc.nasa.gov
     Don Gillies           gillies@a.cs.uiuc.edu
     Steve Burdick         sburdick@cup.portal.com

Draw your own conclusions. Responses follow.

----- Start of Responses -----
Ken writes:
>If the hardware itself doesn't slow down the Mac II, then the
>extra pixels that it has to refresh, and take care of, and so on,
>will degrade performance.  If the hardware is designed correctly,
>I don't think it should degrade a system's performance as a
>whole, but when larger displays are concerned, and there aren't
>any graphics co-processors or co-processors in general to keep
>track of screen pixels, there will be system performance
>dropoffs.
-----
Don writes:
>only the Macplus is slowed down by the display.  The MacSE and higher
>all have dual-ported video ram, and custom circuitry to refresh the
>display (the Mac+ display is refreshed by generating CPU interrupts).
-----
Steve writes:
>I don't have much to offer except the observation that Versaterm4.0
>requires vastly more memory as you increase screen size and colors.
>(That's memory assigned under multifinder).  
----- End of Responses -----

Well, that's all. Does anyone else care to comment?
+Norm
-- 
Norman Graham                            Oklahoma State University
  Internet:  norman@a.cs.okstate.edu     Computing and Information Sciences
      UUCP:  {cbosgd, rutgers}           219 Mathematical Sciences Building
              !okstate!norman            Stillwater, OK  74078-0599
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!rutgers!okstate!norman
From: norman@a.cs.okstate.edu (Norman Graham)
Newsgroups: comp.sys.mac
Subject: Summary: Monitors and MacII performance?
Keywords: monitors speed mac II
Message-ID: <4811@okstate.UUCP>
Date: 19 Jul 89 02:21:37 GMT
Organization: Oklahoma State Univ., Stillwater
Lines: 45