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Re: MacIvory

    Date: Fri, 2 Sep 88 13:41 PDT
    From: Mr.Spock@SAMSON.CADR.DIALNET.SYMBOLICS.COM (Mr. Spock)

	Date: Fri, 2 Sep 88 12:08 EDT
	From: Charles Hornig <Hornig@ALDERAAN.SCRC.Symbolics.COM>

	    Date: Fri, 2 Sep 88 08:47 PDT
	    From: Mr. Spock <Mr. Spock@SAMSON.CADR.DIALNET.SYMBOLICS.COM>

		Date: Fri, 2 Sep 88 08:47 EDT
		From: Hornig@ALDERAAN.SCRC.Symbolics.COM (Charles Hornig)

		    Date: Fri, 2 Sep 88 02:20:48 EDT
		    From: chseow@wheaties.ai.mit.edu (Choong Huei Seow)

		    According to Symbolics [this was when I was at AAAI], this MacIvory has
		    a performance of a 3620 machine. Is the slowdown due to the Memory board
		    residing on a Nubus slot ?

		The slowdown is due to the disks available for the Mac II being much
		slower than the disks Symbolics now sells on its 36xx line.  We expect
		this problem to resolve itself as the disk manufacturers realize that
		there is a market for fast disks.

	    Well, that shoots the whole MacIvory down for me (rats!!).  We have a
	    3620 and it's slower than molasses.

	Older 3620's shipped with slower disks (Maxtor XT2190's).  We now sell
	them with Maxtor XT4380's.  Check your system before you jump to
	conclusions.

    OK, I stand corrected.  What's the speedup?  Maybe I want to upgrade..

The speedup for a typical 1-sector read is approximately 30%.  The newer
disks both seek faster and have a higher transfer rate.