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Posted by Hula Baloo on May 4, 2008, 12:14 pm
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I have my first new laptop since the days of the 286 chip (early 90s),
and am curious about the potential for heat problems I've heard so much
about with laptops. My new laptop is a Toshiba Satellite A215-S5825 with an
AMD Athlon dual processor TK-55 1.8 GHz CPU, 120 GB Fujitsu 5400 RPM HD, 1.5
GB DDR2 PC5300 RAM. This machine is far from the top of the line ones, so
I'd think heat would be less of a problem. On the other hand I know there's
a lot of stuff cramed into a tiny space in this thing, and you're always
seeing ads for laptop coolers. I'd really not bother with one of these
coolers, and I do have a 4 year maintenance contract, but if the CPU, mobo,
or other components are in jeopardy from heat, I might need one. My normal
use of this machine is a couple of hrs. daily in my lap in my den, connected
to my cable broadband via my Wi-Fi router and plugged into the house AC
power. Sitting in my lap, I doubt if the air flow is optimal, but the power
supply fan never seems to be running very fast nor its output all that hot
(it's pretty warm air, but you can hold your hand next to it as long as you
want without discomfort).
Any feedback about the need for a laptop cooler would be highly
appreciated. TIA
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Posted by Val on May 4, 2008, 12:58 pm
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From your usage description, the best recommendation is to get a solid, flat
surface to put the laptop on while on your lap. This will allow its feet to
hold it up and get some airflow, and will also keep your legs from getting
warmed by the machine. If you're not feeling hot air vented from the
machine, you're doing fine.
Val
I have my first new laptop since the days of the 286 chip (early 90s),
and am curious about the potential for heat problems I've heard so much
about with laptops. My new laptop is a Toshiba Satellite A215-S5825 with an
AMD Athlon dual processor TK-55 1.8 GHz CPU, 120 GB Fujitsu 5400 RPM HD, 1.5
GB DDR2 PC5300 RAM. This machine is far from the top of the line ones, so
I'd think heat would be less of a problem. On the other hand I know there's
a lot of stuff cramed into a tiny space in this thing, and you're always
seeing ads for laptop coolers. I'd really not bother with one of these
coolers, and I do have a 4 year maintenance contract, but if the CPU, mobo,
or other components are in jeopardy from heat, I might need one. My normal
use of this machine is a couple of hrs. daily in my lap in my den, connected
to my cable broadband via my Wi-Fi router and plugged into the house AC
power. Sitting in my lap, I doubt if the air flow is optimal, but the power
supply fan never seems to be running very fast nor its output all that hot
(it's pretty warm air, but you can hold your hand next to it as long as you
want without discomfort).
Any feedback about the need for a laptop cooler would be highly
appreciated. TIA
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Posted by BillW50 on May 4, 2008, 1:00 pm
Please log in for more thread options Hula Baloo typed on Sun, 4 May 2008 12:14:57 -0400:
> I have my first new laptop since the days of the 286 chip (early
> 90s), and am curious about the potential for heat problems I've heard
> so much about with laptops. My new laptop is a Toshiba Satellite
> A215-S5825 with an AMD Athlon dual processor TK-55 1.8 GHz CPU, 120
> GB Fujitsu 5400 RPM HD, 1.5 GB DDR2 PC5300 RAM. This machine is far
> from the top of the line ones, so I'd think heat would be less of a
> problem. On the other hand I know there's a lot of stuff cramed into
> a tiny space in this thing, and you're always seeing ads for laptop
> coolers. I'd really not bother with one of these coolers, and I do
> have a 4 year maintenance contract, but if the CPU, mobo, or other
> components are in jeopardy from heat, I might need one. My normal
> use of this machine is a couple of hrs. daily in my lap in my den,
> connected to my cable broadband via my Wi-Fi router and plugged into
> the house AC power. Sitting in my lap, I doubt if the air flow is
> optimal, but the power supply fan never seems to be running very fast
> nor its output all that hot (it's pretty warm air, but you can hold
> your hand next to it as long as you want without discomfort). Any
> feedback about the need for a laptop cooler would be highly
> appreciated. TIA
Well get something like BattStat (freeware) from:
http://users.rcn.com/tmtalpey/BattStat/
And you can watch the hard drive(s) and CPU temperatures. I have found
that just boosting up the back end of the laptop an inch or more keeps
my Gateway MX6124, Celeron 1.5GHz, 1GB very cool. CPU is usually about
130°F and the hard drive about 108°F. And the fan runs very slowly you
can't even hear it unless the room is dead silent.
Flat on a desk/table the CPU will run about 150°F and the hard drive
about 120°F. And the fan will kick in on high speed about 15% of the
time under these conditions. And on my lap strangely enough, it runs the
coolest of all. But I am careful not to block the bottom vent with my
legs.
I never owned a laptop yet that gets very hot at all except my Toshiba
laptops. And the only ones I owned was from the 90's and none of them
had vents on the bottom. So those laptop fans probably won't do much for
those anyway. So I don't think much of those fans anyway. But I suppose
some people own laptops which does gets very hot. So they probably help
some people out a lot. :-)
--
Bill
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Posted by - Bobb - on May 5, 2008, 9:50 am
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> Hula Baloo typed on Sun, 4 May 2008 12:14:57 -0400:
<snipped>
>>Sitting in my lap, I doubt if the air flow is
>> optimal, but the power supply fan never seems to be running very fast
>> nor its output all that hot (it's pretty warm air, but you can hold
>> your hand next to it as long as you want without discomfort). Any
>> feedback about the need for a laptop cooler would be highly
>> appreciated. TIA
>
> I never owned a laptop yet that gets very hot at all except my Toshiba
> laptops. And the only ones I owned was from the 90's and none of them
> had vents on the bottom. So those laptop fans probably won't do much for
> those anyway. So I don't think much of those fans anyway. > --
> Bill
I've had a few laptops with 'no vents on the bottom' yet the antec coolers
work fine. Even though no DIRECT air blowing in/out of bottom vent, it
still 'surrounds the bottom of the case with cool air' and dissipates the
heat. Usually the bottom of the motherboard/case is one big heat sink for
the processor and better to cool it than not.
http://www.antec.com/us/productDetails.php?ProdID=75004#
http://www.antec.com/pdf/flyers/NoteBookCooler.pdf
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Posted by BillW50 on May 5, 2008, 2:40 pm
Please log in for more thread options - Bobb - typed on Mon, 5 May 2008 09:50:43 -0400:
>> Hula Baloo typed on Sun, 4 May 2008 12:14:57 -0400:
> <snipped>
>>> Sitting in my lap, I doubt if the air flow is
>>> optimal, but the power supply fan never seems to be running very
>>> fast nor its output all that hot (it's pretty warm air, but you can
>>> hold your hand next to it as long as you want without discomfort).
>>> Any feedback about the need for a laptop cooler would be highly
>>> appreciated. TIA
>>
>> I never owned a laptop yet that gets very hot at all except my
>> Toshiba laptops. And the only ones I owned was from the 90's and
>> none of them had vents on the bottom. So those laptop fans probably
>> won't do much for those anyway. So I don't think much of those fans
>> anyway.
>>
> I've had a few laptops with 'no vents on the bottom' yet the antec
> coolers work fine. Even though no DIRECT air blowing in/out of bottom
> vent, it still 'surrounds the bottom of the case with cool air' and
> dissipates the heat. Usually the bottom of the motherboard/case is
> one big heat sink for the processor and better to cool it than not.
> http://www.antec.com/us/productDetails.php?ProdID=75004#
> http://www.antec.com/pdf/flyers/NoteBookCooler.pdf
I looked at this design and it is ass backwards for my needs! As my
Gateway MX6124 draws air through the bottom and exhausts it out the left
side. This cooler also creates a vacuum on the laptop's bottom. Thus it
creates a negative air pressure which leaves far less airflow for the
laptop to use to cool itself.
And if the fans are powerful enough, they will force airflow backwards
against the laptop's fan. Which is a very bad idea IMHO. Not much good
can come from this. And I really would like to see the data of the CPU
and hard drive temperatures with and without this notebook cooler.
And I am sure cooling the bottom even without any vents on the laptop
helps a lot. Although when I leave my laptop on a flat surface, the CPU
temperature rises by about 20°F. Although if I raise the rear of the
laptop just an inch, it drops down to 130°F (55°F) or less. And
according to:
http://www.heatsink-guide.com/content.php?content=maxtemp.shtml
Thus my Celeron M 1.5GHz maximum temperature is 69° to 70°C (156° to
158°F). So I am running far less than that just by raising up the back
of the laptop just an inch. Although it runs at 150°F (66°C) when
operated as it was designed to be used. And I can tell you that at about
165°F (74°C), my laptop can suddenly lockup. I have seen this happen on
a table with a table cloth. Raising it up an inch though, the heat drops
down very quickly to 130°F.
--
Bill
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