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Thread: Homemade laptop cooler.

  1. #1
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    Default Homemade laptop cooler.

    Q: What happens when I'm bored and can't sleep?
    A: My wife gets her OLD laptop stand turned into a cooler.

    While I try to figure out how tired I'm going to be tomorrow if I can't get to bed soon I grab an old PC carcass, a wire stripper, screwdriver, and an old broken USB cable. Let's see... remove exhaust fan, remove CPU cooler fan, dismantle PSU and... remove fan. Looks like there's a 90mm and a couple of 80mm, but I'm too lazy to measure. Snip, strip, twist together all the black wires, twist together the reds with the yellows. Hmmm, can't find my electrical tape. Oh yeah, I've got a couple of feet of self-adhering silicone tape left over from one of many automotive repairs. Wrap that around there so we don't get any crossed wires and it will never come apart without a sharp blade and malevolent intent being involved.
    Homemade laptop cooler.-0315180652.jpgHomemade laptop cooler.-0315180720.jpg

    Hmmm, holes in the mesh are much smaller than the fan screws, which I don't have enough of anyway. OK, plan B is a large handful of black wire ties that came off of all those cables from my PC builds. After lots of poking plastic coated wire through many small holes and twisting, viola!
    Homemade laptop cooler.-0317002331.jpgHomemade laptop cooler.-0317002422.jpg
    Yay! Maybe now after an hour or so of gaming her CPU and GPU won't be too hot for her to rest her wrists on the laptop.

    OK, now that I've done something maybe my brain will rest. *crosses fingers and stumbles off to bed*

  2. The following user thanks HyperactiveSloth For this above post:

    calemus (17-03-2015)

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    Default Re: Homemade laptop cooler.

    I have too give you much credit for this. So glad you opted to join PureOC.

    How is the noise level? You going to test before and after temps?
    "If you got it, Build it"

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    Gu3
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    Default Re: Homemade laptop cooler.

    Quote Originally Posted by HyperactiveSloth View Post
    Q: What happens when I'm bored and can't sleep?
    A: My wife gets her OLD laptop stand turned into a cooler.

    Yay! Maybe now after an hour or so of gaming her CPU and GPU won't be too hot for her to rest her wrists on the laptop.

    OK, now that I've done something maybe my brain will rest. *crosses fingers and stumbles off to bed*
    Great idea. I have to admit I laughed when I read the zip tie fastening method and then the last line, and then thought...but...but...all that dust...LOL.

    But then again, Problem solved!

    Nice work Sloth!

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    Default Re: Homemade laptop cooler.

    Love it! Nice job there.

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    Default Re: Homemade laptop cooler.

    Now that is what I call modding...

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    Default Re: Homemade laptop cooler.

    Quote Originally Posted by Cyberburnout View Post
    I have too give you much credit for this. So glad you opted to join PureOC.

    How is the noise level? You going to test before and after temps?
    Good question. Let's find out before I'm off to work for the day.
    10 minute stress test
    Cooler off: Max average CPU 88.0, max core 93.0, threshold warning tripped at 7:39.
    Cooler on: Max average CPU 84.0, max core 90.0, threshold never reached.

    I'll have to do some more thorough tests later. Most important test will be the wife test. I'll know tonight if it got "hot to the touch" while she's using it or not.

    Oh, almost forgot, the fans are barely audible. Running at 5v they're quieter than the laptop itself. That's not bad for 10+ year-old random mismatched fans.

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    Default Re: Homemade laptop cooler.

    Quote Originally Posted by HyperactiveSloth View Post
    Good question. Let's find out before I'm off to work for the day.
    10 minute stress test
    Cooler off: Max average CPU 88.0, max core 93.0, threshold warning tripped at 7:39.
    Cooler on: Max average CPU 84.0, max core 90.0, threshold never reached.

    I'll have to do some more thorough tests later. Most important test will be the wife test. I'll know tonight if it got "hot to the touch" while she's using it or not.

    Oh, almost forgot, the fans are barely audible. Running at 5v they're quieter than the laptop itself. That's not bad for 10+ year-old random mismatched fans.


    Sounds like the wife owes you a cookie! not bad at all for random parts. Good stuff!
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    Default Re: Homemade laptop cooler.

    OK, now that I've had time to run supervised FurMark tests the results are very telling. It would appear that my wife's complaints about the performance of her laptop were indeed heat related.

    FurMark test with cooler off: GPU maxed out at 96C at which point the safeties kicked in and throttled it to prevent overheating. It was effectively "bouncing off the limiter" to use an automotive analogy. (I AM a car guy after all.) It only took 4-5 minutes to reach this point and after 10 minutes the CPU temps were at 88C.

    So, judging from this I would say that there was a definite restriction in performance just from heat alone. It was consistently hitting the error threshold of the CPU and the GPU was constantly throttling itself down.

    FurMark test with cooler on: GPU maxed out at 85C where it reached equilibrium and remained hovering just below that temp. It took over 7 minutes to reach that max and after 10 minutes it was still stable at 83C-85C with a CPU temp of 73C. At the 20 and 30 minute marks, temps still remained stable.

    So, all-in-all the cooler is achieving success. I'd like the temps to be even lower, but for a 3-year-old laptop of it's size and capabilities I'm willing to settle for it.


    My wife tends to ignore PC issues and just keeps using it until something is obviously and annoyingly wrong. Over the past few months I've done progressively more aggressive optimizations and each time it helped... until the next time she chose to mention that it was "acting up again." Prior to that she had mentioned that it was getting hot. I took it apart and gave it a good cleaning and that helped. She occasionally would say it felt hot again, but then the problem "went away" so I didn't give it much thought. I was too busy removing viruses and ever more annoying browser extensions and hijackers. She's actually quite internet savvy, but she does still fall for some of the classic lures and ends up with stuff that she "has no idea where it came from." The last time it started "acting up" I decided to run a full benchmark test just out of curiosity since I had just finished the kids' builds and had been using the PassMark software recently. It turned up something interesting. I had set the baselines to compare it to other laptops similar to hers so I could tell if it was running as well as it should or if it just seemed slow because it was 3 years old and running more and more demanding software as time progresses. After a full optimization it benchmarked about where it should be compared to like machines, except for one thing. Some of the machines in the baselines only had integrated graphics and some had the same GT 540M GPU that hers has. The problem was that in the graphics tests hers was scoring exactly the same as the integrated machines, NOT the ones with the GPU. No wonder it seemed like games were much laggier lately! Her laptop was only running on the CPU and the GPU was doing nothing. After a driver re-install it now benched like it should and she was WAY happier with her in-game graphics. One problem, though... It was getting HOT! We're not taling warm to the touch, we're talking hot enough you wouldn't want to rest your hand on it. Where you might ask was this hot spot? Directly over the GPU of course, which also happens to be exactly where she rests her wrist when gaming. So, that brings us to the present when I decided she needs a cooler.

    Since it seems to be doing good enough to keep it "under the red line" I'll have to call it good enough for the moment. Another cleaning may be in order, but beyond that it may just have to stay this way. I'm just worried that if I keep cracking it open to fiddle with it more than it may not run at all one of these days. It's been a great machine for years and my wife really likes it, but I'm thinking next year at tax time I'm going to recommend we spend a little on her and get her a new one. It's still a good laptop, but with the amount and degree of use it gets it may be due for retirement by then.

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    Default Re: Homemade laptop cooler.

    Quote Originally Posted by Cyberburnout View Post
    Sounds like the wife owes you a cookie! not bad at all for random parts. Good stuff!
    Mmmmm, cookie! Fortunately, she'll have to use an oven to bake it now instead of her laptop.

  11. #10
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    Default Re: Homemade laptop cooler.

    I know this is blasphemous, but buy her a Mac.

    Seriously. My kid is going away to college, and asked for a Mac. My initial gut reaction was Hell No! But then I thought about it.

    Windows requires significant care and feeding every day. The amount of malware target at the "average" windows user is astonishing. Further, sites that I've trusted for years are becoming filled with click bait (I'm looking at you Filehippo), making it almost impossible to find the "correct" link to click on to download software.

    Macs, love them or loathe them, simply don't require the constant attention that a Windows machine does. Linux doesn't either, but it requires a significantly higher investment in learning, which typical users simply don't invest. So. Though I generally not a Mac person, I'm buying a Mac for my daughter. All else fails, she can carry it into the Mac Store and let them fix it.

    For that matter, as much as I like my Lenovo U300s Ultrabook (with Windows 7), my Asus Zenbook is just awful. (2 years newer, with Windows 8.1) partly it's the OS, and partly it's the ridiculous screen resolution (2560 x something or other on a 13" Widescreen) and other ridiculous hardware decisions. I should have bought a Macbook for the same price as the Asus, and I could have dispensed with Crap Cleaner, Revo Uninstaller, StartX, Avast, Malwarebytes, and probably half a doze other applications that make the damned thing "usable". In fact, next time I do buy a laptop for myself, It'll likely be a Mac. <sigh>. I feel violated by the thought. LOL

    The long and short of it is, if you want to do less support for your wife's PC, buy her a Mac.

    S.

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    Default Re: Homemade laptop cooler.

    Quote Originally Posted by Gu3 View Post
    The long and short of it is, if you want to do less support for your wife's PC, buy her a Mac.

    S.
    You sir! sound like you are trying to deny me my cookies. Me want cookies!!! "Om-nom-nom-nomnom-nomm-nomnom" *crumbs fly everywhere*

  13. #12
    Gu3
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    Default Re: Homemade laptop cooler.

    LOL.

    Think of it this way. More time to EAT cookies, and build cool things that don't involve "fixing" Windows! LOL

    On the other hand...it that's what it takes to get Cookies...by all means! LOL

    S.

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