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From: lauac@mead.qal.berkeley.edu (Alexander Lau)
Newsgroups: comp.sys.mac
Subject: Re: Doing like 50
Message-ID: <24612@agate.BERKELEY.EDU>
Date: 19 May 89 08:37:42 GMT
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In article <2648@nmtsun.nmt.edu> vogelei@nmtsun.nmt.edu (Todd Vogelei) writes:
>
>In the June Macworld is a note about Motorola announcing a 50 Mhz
>68030 which is said to be faster than any Risc or Cisc currently 
>available at up to 12 MIPS.  The Chip is expected to ship in 
>production quatities in late '89.

As a side note to this, Motorola also said that the 25 MHz 68040
would actually be faster than a 50 MHz 68030.

>My question for you tech types out there is what would happen if 
>I were to yank the 16Mhz '30 out of my mac IIx and drop in one of these
>screamers.  Would it make a diff?  Would my mac now rnn at 50 Mhz 
>(or whatever the speed was?)
>
>Inquiring minds want to know!

Well, I'm not really a tech type, but I'm a rumor monger, so here
goes: Apple had to completely redesign the logic board in order to
take advantage of a 25 or 33 MHz 68030 (coming soon), so don't expect
a 50 MHz chip to do you much good.

The 68040 is software-compatible, but not pin-compatible with the
rest of the 680x0 family. Therefore, Apple will have to redesign
the logic board again. Perhaps another 15-18 months.

>Todd 
>vogelei@nmtsun

--- Alex
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