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5400 vs 7200 rpm notebook drive, and heat?

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5400 vs 7200 rpm notebook drive, and heat? Liam 07-11-2006
Posted by Liam on July 11, 2006, 3:06 pm
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I'm looking at getting an Alienware Sentia m3450 notebook.
With the dual-core Centrinos, the Intel 950 graphics chip, it should
run reasonably cool, no?
("Cool" as in heat, of course. *g*)
So, I'm deciding between a cheaper 5400 rpm drive or a faster 7200
drive, and was wondering if the faster spin causes additional heat? I
know that notebook drives already produce a lot of the heat in a
notebook. Will this make any real difference?
Is 7200 over 5400 worth the extra cost? I'm basically using it for word
processing and Office tasks, but sometimes games (obviously because of
the graphics chip, older games like EVE-Online, Sid Meyer's Prirates!,
Civ-2, Neverwinter Nights 1, etc.)
Should I stick with 5400 or is 7200 worth the extra money I could use
elsewhere?
Thanks for any feedback!
Liam


Posted by Bob I on July 11, 2006, 3:14 pm
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The drive is the slowest part of the system. How slow is acceptable to you?

Liam wrote:

> I'm looking at getting an Alienware Sentia m3450 notebook.
> With the dual-core Centrinos, the Intel 950 graphics chip, it should
> run reasonably cool, no?
> ("Cool" as in heat, of course. *g*)
> So, I'm deciding between a cheaper 5400 rpm drive or a faster 7200
> drive, and was wondering if the faster spin causes additional heat? I
> know that notebook drives already produce a lot of the heat in a
> notebook. Will this make any real difference?
> Is 7200 over 5400 worth the extra cost? I'm basically using it for word
> processing and Office tasks, but sometimes games (obviously because of
> the graphics chip, older games like EVE-Online, Sid Meyer's Prirates!,
> Civ-2, Neverwinter Nights 1, etc.)
> Should I stick with 5400 or is 7200 worth the extra money I could use
> elsewhere?
> Thanks for any feedback!
> Liam
>


Posted by Liam on July 11, 2006, 3:22 pm
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Bob I wrote:
> The drive is the slowest part of the system. How slow is acceptable to you?
>
Well, that's my question, isn't it.
How much of a difference is 7200 from 5400? Noticeable? Sometimes
noticeable during certain tasks? All the time noticeable?
In just numbers 7200 is what, 25% faster than 5400? But I know in
actual useage that doesn't mean performance is exactly 25% faster all
the time.
So, some feedback on the difference between the two would be nice.
Thanks!
Liam

> Liam wrote:
>
> > I'm looking at getting an Alienware Sentia m3450 notebook.
> > With the dual-core Centrinos, the Intel 950 graphics chip, it should
> > run reasonably cool, no?
> > ("Cool" as in heat, of course. *g*)
> > So, I'm deciding between a cheaper 5400 rpm drive or a faster 7200
> > drive, and was wondering if the faster spin causes additional heat? I
> > know that notebook drives already produce a lot of the heat in a
> > notebook. Will this make any real difference?
> > Is 7200 over 5400 worth the extra cost? I'm basically using it for word
> > processing and Office tasks, but sometimes games (obviously because of
> > the graphics chip, older games like EVE-Online, Sid Meyer's Prirates!,
> > Civ-2, Neverwinter Nights 1, etc.)
> > Should I stick with 5400 or is 7200 worth the extra money I could use
> > elsewhere?
> > Thanks for any feedback!
> > Liam
> >


Posted by Bob I on July 11, 2006, 3:33 pm
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So are you getting LOTS of memory to prevent program swaps to pagefile?
Are you the kind of person that has to have every program you might use
open at the same time? Do you play music and movies? A good 7200 is
nearly 50% faster than a 5400. So, how slow is acceptable to you?

Liam wrote:
> Bob I wrote:
>
>>The drive is the slowest part of the system. How slow is acceptable to you?
>>
>
> Well, that's my question, isn't it.
> How much of a difference is 7200 from 5400? Noticeable? Sometimes
> noticeable during certain tasks? All the time noticeable?
> In just numbers 7200 is what, 25% faster than 5400? But I know in
> actual useage that doesn't mean performance is exactly 25% faster all
> the time.
> So, some feedback on the difference between the two would be nice.
> Thanks!
> Liam
>
>
>>Liam wrote:
>>
>>
>>>I'm looking at getting an Alienware Sentia m3450 notebook.
>>>With the dual-core Centrinos, the Intel 950 graphics chip, it should
>>>run reasonably cool, no?
>>>("Cool" as in heat, of course. *g*)
>>>So, I'm deciding between a cheaper 5400 rpm drive or a faster 7200
>>>drive, and was wondering if the faster spin causes additional heat? I
>>>know that notebook drives already produce a lot of the heat in a
>>>notebook. Will this make any real difference?
>>>Is 7200 over 5400 worth the extra cost? I'm basically using it for word
>>>processing and Office tasks, but sometimes games (obviously because of
>>>the graphics chip, older games like EVE-Online, Sid Meyer's Prirates!,
>>>Civ-2, Neverwinter Nights 1, etc.)
>>>Should I stick with 5400 or is 7200 worth the extra money I could use
>>>elsewhere?
>>>Thanks for any feedback!
>>>Liam
>>>
>
>


Posted by timeOday on July 14, 2006, 12:58 am
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Bob I wrote:
> So are you getting LOTS of memory to prevent program swaps to pagefile?
> Are you the kind of person that has to have every program you might use
> open at the same time? Do you play music and movies? A good 7200 is
> nearly 50% faster than a 5400. So, how slow is acceptable to you?

It really doesn't make all *that* much difference, outside of certain
tasks, though it is sometimes noticeable.

I recently upgraded from 4200 RPM drive to 7200 RPM drive and here are
some benchmarks.

On a synthetic benchmark:
Timing buffered disk reads: 86 MB in 3.00 seconds = 28.64 MB/sec
Timing buffered disk reads: 156 MB in 3.01 seconds = 51.85 MB/sec

based on that, you'd think WOW! And for copying a huge file, it does
make a very big difference:
real 2m17.606s
real 1m17.829s

But then look at boot times:
54.7s
47s
App loading times are comparable - you'll save a few seconds here and there.

And compile times:
real 0m58.301s
real 0m55.941s
not much improvement there.

On the plus side, energy usage (heat) isn't much different between the
two, either.

So if you want to spend some extra money and save a few seconds here and
there, go ahead. But if you ask me it's MUCH more important to have
enough RAM first. Whether to spend any leftover money on CPU or disk
just depends on what you're going to be doing.

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