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

Author: stuart taylor

Date: 17:52:30 05/17/05

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On May 17, 2005 at 20:20:16, Dan Andersson 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,
>>
>
> Pretty insane values for hard disks, divide by ten. Slower rotation speed means
>that the data is read/written slower. Access times ar higher. That is if the
>drives are equal except for rpms. The positive is that slower drives usually are
>less needy in wattage.
>
>>b).what difference does this make to speed of computer functions, and which
>>computer functions does it affect?
>
> The use of virtual memory is faster with faster drives. Read/write trashing on
>a slow drive is hell. But slower drives mean longer battery life to enjoy.
>
>>
>>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 have no knowledge about the 915 chipset. But there are a lot of things that
>can make a difference like power saving modes, unified memory architecture, lack
>of native command queueing ...
>
>>
>>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?
>
> Choosing a crappy chipset will definitely bork the system.
>
>>
>>2).What is the difference between the proccessors from Intel Pentium Mobile
>>technology, if it is 730, 735, 740 till about 770 etc?
>
> The Pentium M 7xx should be equal except in core speed and energy consumtion.

What is core speed, and what does it affect?
S.Taylor
>
>>
>>Thanks for any answers, information or opinions.
>>
>>S.Taylor



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