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Cooling Laptops (homebrew)

post #1 of 18
7/4/05 at 8:07am
Thread Starter 
Has anyone done anything short of fan control to modify their laptop to increase the cooling? I don't mind the fans that much, but I like to have my laptop on whenever I'm awake at least, and since I have Insomnia that means around 19 hours a day usually. It runs pretty hot, I added some 1/2 inch tall anti-slider pads to the bottom, it has increased the air flow pretty well (2-3 change in celcius). But has anyone ever thought of a dock with a pelsier cooler or something of that nature to cool the air flowing through? I don't want to just add the little fan stand to it, because if that is all I'm doing I can add fans on my own. Also, has anyone modified/added new fans to their cases?

I run about 67C CPU, 58C System just in normal use with browser/bittorrent/mail app/launch apps. The lowest it goes is about 59C CPU, 50C System.

Sager 4080 P4 2.8 GHz, 1 Gig 3200 Ram, Radeon 9600 Mobility, 60 gig 7200 RPM harddrive.
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post #2 of 18
7/4/05 at 9:03am
Well... Get a centrino and undervolt it.
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post #3 of 18
7/4/05 at 11:12am
Thread Starter 
Quote:
Originally Posted by bit3
Well... Get a centrino and undervolt it.
I can underclock mine now, but the point is I want to cool it. If I had wanted a slower processor I would have ordered the centrino with my laptop, I wanted the p4 because I don't like the centrino. (Bad experience with multiple while working with them at my last company.)
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post #4 of 18
7/4/05 at 1:04pm

this is what i do.

it helps lower my temps from CPU ~50C, HDD ~48C down to CPU ~30C, HDD ~40C.

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post #5 of 18
7/4/05 at 3:28pm
i just gotta post under you... i got a worse score on the 2k1... same computer w/ integrated graphics... i hate this piece of crap
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post #6 of 18
7/4/05 at 3:59pm
Underclocking is not the same as undervolting as far as I'm aware.
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post #7 of 18
7/4/05 at 11:35pm
I had A/C duct run to my desktops to blow cold air in to them - I remember a few years back about talk of using differntial metal to cool CPUs (cold air is formed on one side, warm on he other; you would suck the warm air out and blow the cold air on to the chip)

If there was a protable way to get cold air in to a laptop I think it would sell.
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post #8 of 18
7/4/05 at 11:57pm
That is what you get for going with P4..LoL!

Intel Pentium-M was designed to run with lesser power than P4, while at the same time give that similar, if not better, performance than P4.

Keep in mind in many benchmarks, the Intel Pentium-M 2.0 surpasses Pentium-4 3.2
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post #9 of 18
7/5/05 at 12:08am
Thread Starter 
I had 6 Pentium M's die on me at work, whereas I've never had a failing Pentium 4. That is why I went with P4. Onapartyrock: are you referring to peltier systems, or just heatsinks? I was considering maybe running water from a freezer unit through piping and coiling it under my fans to cool the air. I'll look into that.
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post #10 of 18
7/5/05 at 12:22am
Quote:
Originally Posted by Strange Species
Underclocking is not the same as undervolting as far as I'm aware.
undervolting is lowering the power.. underclocking is lowering the clock per cycle..
big difference there. look it up..

i can't say much about the p4.. the P-M is amazing, best processor from Intel since P2.. 1/3 of the p4's heat?, runs faster than most p4's, mine benchmarks like a 3.8p4 with HT... , and uses up a lot less power..
and the P4.. in my opinion and most people's opinion is Intel's worst..
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post #11 of 18
7/5/05 at 12:54am
Quote:
this is what i do.

it helps lower my temps from CPU ~50C, HDD ~48C down to CPU ~30C, HDD ~40C.


Isn't the fan electromagnet going to wreck havok on your hard drive/storage media?
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post #12 of 18
7/5/05 at 12:54am
Undervolting lowers the power without lowering the clock speed. However, since you have a P4, I'm not sure how effective that'll be. The Pentium-M was built to be stable and produce less heat, and voltages were specifically planned for stability--hence, why you can go below it without any problems.

Besides applying thermal grease (Arctic Silver Ceramique and Arctic Silver 5 seem to be the two reigning champs), have you considered using a laptop cooler? A cooler is basically just a series of fans that you place your laptop on, and then it transfers the built up heat out and away. Plus, many of them have adjustable heights, so you can tild it towards and away from you. As an added bonus, most recent ones have USB hubs as part of their design, so you can use it as a mini-desktop.

There was a REALLY nice one wiht 4 USB ports, but I can't remember it for the life of me! Anyways, just try searching for "laptop coolers" on Google, and you'll get a bunch.

Quote:
If there was a protable way to get cold air in to a laptop I think it would sell.
There are about three products that use this... one fits inside a 5.25" bay, and that's the smallest one. There's really no way to do this for a notebook, unfortunately...
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post #13 of 18
7/5/05 at 4:23pm
There was one that somebody posted some time ago where he just cut a hole in his desk and mounted a small electronics fan into the desk to blow air from beneath the desk strait into the air vents. Similar to unfalliblekrutc, but not quite as extreme and aestheticaly more pleasing.
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post #14 of 18
7/5/05 at 5:10pm
I am amaze people still play starcraft these days...

That is one awesome game.
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post #15 of 18
7/5/05 at 6:24pm
Well its simple buy a smal styrofoam cooler, that is slightly bigger than the base of your laptop. You can cut a groove out of the inside rim of the cooler so your laptop fits nice and snug. Fill the cooler with ice and voila cooled air into your laptop. This is probably more bootleg than sitting your laptop on top of a fan but it will work as long as too much moisture doesn't get pulled inside to short it out.

And a side note, if you have had 6 pentium M's fail don't get a pentium 4 get a AMD athlon they run cooler and faster than a P-4 even the Mobile P-4s. If I wasn't getting a pentium M cause I will be putting my laptop through light use I would get the AMD its a better chip for raw speed... though in benchmark tests of certain games it seemed to be worse than pentium.
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post #16 of 18
7/6/05 at 1:52am
Quote:
Originally Posted by CollegeStudent
Well its simple buy a smal styrofoam cooler, that is slightly bigger than the base of your laptop. You can cut a groove out of the inside rim of the cooler so your laptop fits nice and snug. Fill the cooler with ice and voila cooled air into your laptop. This is probably more bootleg than sitting your laptop on top of a fan but it will work as long as too much moisture doesn't get pulled inside to short it out.
You could try http://www.kooleraire.com if you serious about a cooler, I've used this on camping trips...
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post #17 of 18
7/6/05 at 2:55am
Quote:
Originally Posted by unfalliblekrutc

this is what i do.

it helps lower my temps from CPU ~50C, HDD ~48C down to CPU ~30C, HDD ~40C.
LOL

Not as creative as this guy's "portable mod"...

"The Ultimate Portable PC"


I just had to share that one...
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post #18 of 18
7/16/05 at 4:04pm
roffle!
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