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Subject: Re: Athlon 1900

Author: Gian-Carlo Pascutto

Date: 07:09:51 12/30/01

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On December 30, 2001 at 09:33:38, David Dory wrote:

>A little confusing since ALL the top Athlon's run at 1.6 GHZ. What
>differentiates thd "1600" "1700" "1800" and "1900" is the CPU's ability to run
>"overclocked", that is, within higher design parameters.

This is completely wrong.

The '1600-1800' designation on the Athlon XP is used a performance
indicator compared to (of that I'm not sure) classic Athlons or
Intel's Pentium IV. It is not the clock speed.

However, the top Athlons _do_ run at differnt clock speeds.

For example:

XP 1800 -> 1533Mhz
XP 1900 -> 1600Mhz

This has _nothing at all_ to do with overclocking.

>They are stamped on the
>face, but you can't see it because of the heat sink and fan.

When you buy the _chip_, it generally does not come with a heat sink
and fan.

>They require excellent air flow for cooling, especially for the "overclocked"
>CPU's.

If you overclock it, then you get to keep the pieces if it breaks.

As for non-overclocked chips, they are actually pretty tolerant
to a bad installation in my experience, as long as you dont completely
botch it. (like, forget to connect the fan)

Many people seem to have a quest to make their chips run cool,
but there is no real need to, as long as it's within reason.
The Athlon can tolerate up to 90C! (but keep in mind that the
hardware monitors on the motherboard don't accurately measure
it's temperature)

>I was looking for a good chess computer/personal computer, and knew the computer
>stores wouldn't allow me to run a chess program on their floor models,

Depends on the store. I have a motherboard that is officially NOT
compatible with the Athlon XP, but I knew from an official source
that it usually works fine. I had no trouble finding a store that
lended me a chip for testing. (And it worked, it was a KT7A v1.0 btw)

> so - I
>took some Tic-Tac-Toe code in C++ (which, oddly enough has FULL minimax but not
>A/B) and made some alterations to it. Instead of the standard 9 it has 16
>squares (but that took _way_ too long to ponder it's moves through the move
>tree), so I added some moves into the TTT grid to help things along.

This is probably just as representative for the speed
of a typical chess program as TSCP is. (It probably fits
in the CPU's cache)

--
GCP



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