[*] PowerCache performance in LC

[Info-Mac]

Download: http://archive.info-mac.org/info/hdwr/c ... g-html.hqx

I recently started a Clock Chipping Home Page, with information on
how to accelerate your Apple Macintosh computer. For those of
you who do not have access to the World Wide Web, I will maintain a
stuffit file with all of the html files from the site. The
package will work best if read with a WWW browser like Netscape
Mosaic which can be found at:
ftp://ftp.digital.com/pub/net/infosys/N ... 093.sit.hq
x

The site, and this stuffit file, includes the latest Mac Crystal
Oscillator Speedup History file as well as others, with information
on accelerating the IIsi, IIfx, C610, C650, C660av, Q605, Q610, Q650,
Q660av, Q700, Q800, Q900, Q950, PM6100(av), PM7100(av),
PM8100(av), PPC PDS card, LCIII, LC475, PB's, and Duo's.

For those of you who use the WWW, the URL for the site is:
http://bambam.cchem.berkeley.edu/~schrier/mhz.html


Marc Schrier

The file should appear in info-mac/info/hdwr




>
>Hello:
> Could someone who can keep megahertzes in their head a little
>better than I lay out the clock speeds for the new AVs vis a vis their
>middle-aged Quadra counterparts? I realize that clock speeds are not a
>measure of the machines performance, but the data would be helpful.
>Couldn't find it in MacWorld's report on these machines. Thanks.
>
>-Bill Barnett [email protected] American Museum of Natural History

------------------------------

Following are the clock speeds and processors of all the Macs I can



About 8 months ago, I requested info about users' experiences with LCD
projection panels. I got a number of responses, and I was going to post
to sumex, but didn't get a chance to. Yesterday I got a request from one
of
the Info-Mac readers to send him any info I did get. It cleared out the
cobwebs, and I realized that there wasn't anything like this currently on
sumex, so I'm posting it now.

However, everything in the technology world changes almost on a daily
basis.
I'm sure there's been many changes, especially with the October rollout of
new Macs, and the never-ending run of 3rd party vendors to introduce new
peripherals to keep up with Apple's changing line.

If you seen any changes in this field since last May that could enhance
this report, please send them to me at [email protected], and I'll udpate



Mac Crystal Oscillator Speedup History 2.3 April 1994

There has been a great deal of interest expressed over the net about
these simple and inexpensive Macintosh modifications that yield 20-
40% speed increases. Over the last year or so I have been doing a
fair amount of crystal oscillator swapping/acceleration on Mac's,
and gathering information from others. I've made several posts to
comp.sys.mac.hardware with the bulk of this info and as new
machines come out, and new concerns surface, I will try to add them
to this history of the modifications, post them on
comp.sys.mac.hardware and make them available for anonymous ftp
on sumex-aim.stanford.edu in /info-mac/info/hdwr. Included in this
version is some of the news on the PowerMac's and Marlin Prowell's
new C650 modification.





Newsgroups: comp.sys.mac.hardware,comp.answers,news.answers
Reply-To: [email protected] (Elliotte Harold)
Organization: Department of Mathematics, NJIT
Summary: This document answers several of the most frequently asked
questions about Macintosh hardware on Usenet. To avoid
wasting bandwidth and as a matter of politeness please
familiarize yourself with this document BEFORE posting.
Keywords: FAQ, Macintosh, mac, macintosh, Mac, hardware
Approved: [email protected]
Followup-To: comp.sys.mac.hardware

Archive-name: macintosh/hardware-faq
Version: 2.2.1
Last-modified: June 12, 1994



Dear Moderators:

I think the following report on the DayStar PowerCache performance in LC's would
be a useful addition to the info-mac/reports directory.

The following explanation of how the PowerCache minimizes the effect of the LC's
16-bit data path was written by Steve Tuttle, the Online Resources Mgr for
DayStar Digital. I will submit an expanded report to the info-mac archives
as soon as Steve forwards the results of the benchmark tests on the unenhanced
LC and IIci, but the results as presented give a good indication of the
performance difference between a PowerCache-enhanced LC and IIci.

"Altho it would appear intuitive that due to the 16 bit path on the LC you are
going to be forced to run slower, it is not necessarily the case. You see, all
Macs have some sort of delays inherent in their design: The II,IIx,IIcx, &
SE/30 all have 120ns RAM and require 2 wait states to be added to the memory