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Subject: Re: 2 important questions regarding laptop and other computers.

Author: Robert Hyatt

Date: 21:04:32 05/17/05

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On May 17, 2005 at 20:14:56, Ryan B. wrote:

>On May 17, 2005 at 19:58:35, stuart taylor wrote:
>
>> 1). What exactly is the implications of RPM in hard disks?
>>a). in comparing 42000 rpm to 72000 rpm,
>In chess none

Makes a +huge+ difference if you use endgame tables.

From someone that does this. :)



>
>>
>>b).what difference does this make to speed of computer functions, and which
>>computer functions does it affect?
>>
>will affect read/write speed.  For chess this should not mater.

RPM doesn't really affect bandwidth.  In fact, the fastest spinners actually
have lower sustained bandwidth because clocking the bits becomes a problem.  As
a secondary issue, the fastest disks are not the best capacity drives, for the
same reason.  Best SCSI drives for capacity today are the 7200 and under
drives...




>
>>c).Does the new 915 chipset make  the rpm slower? (I read that they make
>>something a little slower, but I couldn't understand exactly what, and if it
>>causes any handicap).
>>
>I really doubt it.
>
>>d).One computer salesman told me over the phone that it represents the weakness
>>or strength of the computer. Does he know what he's talking about?
>>
>no
>
>>2).What is the difference between the proccessors from Intel Pentium Mobile
>>technology, if it is 730, 735, 740 till about 770 etc?
>>
>speed
>
>>Thanks for any answers, information or opinions.
>>
>
>>S.Taylor
>
>
>The Pentium M is a very fast cpu and good for chess however for engines that hit
>the hash table a lot the slower RAM access of a laptop may slow things down a
>bit. Might try turning off ETC if it is an option in your favorit chess program
>when playing on a laptop.



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