old thinkpad horsepower increase

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From: Andrew Beals (bandy_at_cinnamon.com)
Date: Wed Aug 07 2002 - 16:24:14 EDT


[claimer: I made the timing comparisons with a Goofy clock]
[claimer: I paid my own money for the daughterboard]
[claimer: I haven't tried to claim the $40 bounty for the 730T's cpu card]
[disclaimer: I have no connection whatsoever with the mentioned parties]

My interest piqued by the ads I've been running into by CUIINC on ebay, I
finally felt I had the spare cash to put a bit more horsepower into one of my
old 730T tablet machines.

The program I used for my speed tests is a copy of "Planet's Visibility",
freeware, by Alcyone software http://www.alcyone.de. It takes a measurably
long time to run, even on a hopped-up 730T so I figured it would make the best
candidate for a test of my new cpu.

Hardware: 730T* machines, 24Mib RAM (8Mib + 16Mib Kingston), 220Mib flash
card, sitting in a dock with an external monitor attached, 16 colors.
Software: Planet's Visiblity [PVIZ] version 1.5.3, W95
Methology: boot system, login, stop ether card, remove same, run speed test

I configured the software for San Jose, California as the location, and ran
the timing test on the Sun's visibility [the default object], and timed the
change from the 2001 calendar year to the 2002 calendar year. This
effectively does 365 sunrise/sunset calculations and also pays attention to
the moon's position so it can plot out any eclipses. The granularity is finer
than one hour, and it may be down to the minute.

Time:
19 min 55 sec on 730T
        * 486SX/33 [no math co-processor!]
45 sec on 730TE [self-timed at 36sec via "one mississippi..."]
                (56 sec if screen paints twice due to bug in program)
        * 486[SLC?]/75
27 sec on 730T w/ cuiinc 133MHz cpu card [<18sec mississippi'ing]
                (33 sec if screen paints twice due to bug in program)
        * AMD 5x86/133

For comparison, it runs in 3 secs with two screen paints on a
PentiumIII/550MHz, sharing with SETI_at_Home, ReflectionX, etc.

Conclusion: If you need the horsepower in a 730T formfactor, it's a great buy.


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