Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cs.utexas.edu!uunet!world!boris
From: boris@world.std.com (Boris Levitin)
Newsgroups: comp.sys.mac.misc
Subject: Re: The New Macs: Greedy Compromises?
Message-ID: <1990Dec2.085558.26111@world.std.com>
Date: 2 Dec 90 08:55:58 GMT
References: <1142@duteca.UUCP>
Organization: The World @ Software Tool & Die
Lines: 13

reinoud@duteca (Reinoud Lamberts) writes:
>A narrower memory bus [on the LC's 020 CPU] greatly reduces system cost: 
>fewer memory chips necessary, fewer bus buffers, cheaper printed circuit board
>(smaller, fewer traces, maybe fewer layers). A 68020 is nearly as fast
>as a 68030, and if the 16 bit bus accesses are handled cleverly (doing
>a fast page mode access on every second 16 bit word when possible) you
>can tweak a very nice performance out of it.

As a result of its narrower memory bus, the LC delivers only roughly 75%
of the Mac II's performance in non-FPU tasks.

The 030 is roughly 25% to 30% faster than an 020 running at the same clock 
speed.