At 15:30 -0400 10/16/2005, Quadlist wrote:
From: "Casolai !" <[EMAIL PROTECTED]>
Subject: Re: [q] Daystar upgrades
Date: Sun, 16 Oct 2005 16:54:00 -0600
The quad doublers are for quadra's and centris systems. They run at double
the speed of the original cpu, up to 50mhz, so they can't be used on
quadra's with a 33mhz cpu originally. They are only for 20mhz and 25mhz 040
systems, upgrading them to 40mhz or 50mhz.
I'm not sure about the turbo 040, but I'm sure somebody else here can chime
in about them.
The Turbo 040 is for 68030 based Macs. It works without an adapter
in the IIci, and (IIRC) the IIvi and IIvx. With various adapters it
can be installed in the Mac II, IIX, IICX, IISI and SE/30. Oh, I
believe there's also an adapter for the LC, LCII and Color Classic,
because I have a couple of those laying around here--okay, I checked.
This adapter puts the PowerCache in the Color Classic, LCII and the
LC. However, the PowerCache (68030 based accelerator, up to 50 MHz)
generally used the same adapters as the Turbo040, so it may be
possible to put the Turbo040 in the LC, LCII and Color Classic as
well.
In general, the 68040 chip is very over-clockable, so I'm not sure
that there is much point to the Quad upgrade from Daystar. With a
bit of soldering, the Centris 650, Q650 and Q800 can often be bumped
up to 40 MHz. See:<http://homepage.mac.com/schrier/mhz.html>
Jeff Walther
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