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HOT OR NOT ? Power Supplys and Heat

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  • HOT OR NOT ? Power Supplys and Heat

    Ive done alot of reading ... plan to do more but it seems it comes down to only 3 things ... Heat - Power - and space.

    So what I want to know of people who have pc's ... is HEAT that big of an issue? I would think heat would kill most pc's. Additionally do placing the units near car AC's cause moisture to condense?

    Can the companies who claim to make pc's that fit in your glove box really do that with 100 watt power supplies? Wouldent it get too hot in there?

    And how about summer/winter weathers.... Do I have to buy military units to operate in Ohio USA climates? Do I have to take the pc inside when not in use? My car gets 140F in the summer and 0F in the winter ..... Ive not seen any "operating temp's" within this range ... that were not military units . ??

    Am I just being a silly paranoid noob with this worry? I'm sure these are all noob questions ... but hey Any input from folks in similar climates is helpful.

  • #2
    can't really say much as far as heat goes, as alot of the components inside a pc are not happy with it, but generally the silicon parts in a pc (north and south bridges, gpu, and cpu) are capable of running up to around 75c without breaking down... though a "safer" number would be a max of 55c loaded, or 131F.

    Now cold on the other hand, look at all the overclockers in the desktop area of computers, with their north, cpu, and gpu under peltiers with watercooling, and even short runs of ln2.... only things that should get finicy with extreme cold is the hd (fluid bearings) and if a few of the misc small chips on the mobo get very cold.

    These are all running conditions. If the unit is off, heat nor cold is a big issue. as it would need to get hot or cold enough to break down the parts itself, and 140F won't do that without the computer itself adding to the heat.

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    • #3
      well, if heat and cold ever are a problem, jus wait until the car warms up or cools down a little before turning the computer on? lol

      there are a lot of threads about this, a lot of people have pcs in their cars with temps that go up that high, some have problems, some dont..

      but about the AC, yeah, its better to not have the pc too close to any ac ducting, or at least not in the path of the ducting, as temp changes can make condensation, which as we all know = BAD

      i'd recommend searching for heating issues, its been discussed many times, really just have it in a ventilated area, and if it does get too hot or too cold, just have a switch on the ACC line, and when the car has warmed up, or cooled down, flip the switch for the computer to turn on (its what i'd do anyway)

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      • #4
        I ran some H.A.L.T. testing on a pc last year. The only thing that crashed during temperature changes was the hard drive. Freaken maxtor....65c the drive failed and some where around frezzing it failed also. But after we let it sit for a couple seconds it started right back up. I think the power supply failed at 65c also. May have been 65c with vibration tesing of about 5G's.

        Now my pc has a really bad (home made 12volt regulator) power supply and in the heat we have been having in california, 110F, i've had the system not detect the hard drive. Again i think the hard drive may be the most problematic part.

        I was just in a meeting today, at work, talking about tempatures inside pc's. Looked like the engineer working on the temp study was quoting around 45-50c ambiant, for operation. Not sure about running the whole pc at 75C. You would probably get less then a year out of a pc running at 75c, alot less then a year
        Um, I guess this is where you put something witty.WITTY

        My Web site, in the design stage. http://home.comcast.net/~cstrachn

        Modified RRSkinEditor http://www.mp3car.com/vbulletin/showthread.php?t=65723

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        • #5
          THanks guys

          I have done some searches and reading on the temp. issues .. and well.. LOL it made me paranoid and had me write this post to see if someone who has done this carpc thing for a long time has perhaps "realized" the solution.

          I had that thought to just turn it on and off with a power switch .. but still wasent sure about storage issues... and damn if the airduct doesnt blow right at the spot I wanted to put it.

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          • #6
            Originally posted by pRoFiT View Post
            I ran some H.A.L.T. testing on a pc last year. The only thing that crashed during temperature changes was the hard drive. Freaken maxtor....65c the drive failed and some where around frezzing it failed also. But after we let it sit for a couple seconds it started right back up. I think the power supply failed at 65c also. May have been 65c with vibration tesing of about 5G's.

            Now my pc has a really bad (home made 12volt regulator) power supply and in the heat we have been having in california, 110F, i've had the system not detect the hard drive. Again i think the hard drive may be the most problematic part.

            I was just in a meeting today, at work, talking about tempatures inside pc's. Looked like the engineer working on the temp study was quoting around 45-50c ambiant, for operation. Not sure about running the whole pc at 75C. You would probably get less then a year out of a pc running at 75c, alot less then a year
            Good info Profit!

            I want more than a year out of this unit ... I think otherwise its a waste of money and time ......

            Now you've got me thinking of a docking station that you plug in and out of like a removable car stereo... but that seems like a mountain in that I've never seen something like that and obviously it needs designed from the ground up.

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            • #7
              yeah, thats 75c rating is the silicon rating, forgot to mention that, tis the rating the manu specs that the core can still function correctly.... no way in heck i'd be running that hot for longer thana few minutes, else your going to recieve a new paper weight every year or so. heh

              ::EDIT:: Here is a more core specific set of charts on breakdown temperature for processors, as they tend to be the most temp sensitive silicon based chip your going to be dealing with... i would say component but the hd has the cpu beat, lol. Also has a formula to calculate wattage usage for those of you crazy enough to go for ocing in the car

              http://www.heatsink-guide.com/conten...=maxtemp.shtml

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              • #8
                Originally posted by Draxx View Post
                Now you've got me thinking of a docking station that you plug in and out of like a removable car stereo... but that seems like a mountain in that I've never seen something like that and obviously it needs designed from the ground up.
                I did it. Click here to see it. Works really well, better than I expected.

                I didn't do it for the heat issues, though. Docking the unit actually makes it run hotter.

                If it makes you feel any better, I've gotten several years out of my VIA, which just today gave up the ghost while on the workbench (blew a cap). The Mini is over the year mark, now and it's still working okay.
                Originally posted by ghettocruzer
                I was gung ho on building a PC [until] just recently. However, between my new phone having internet and GPS and all...and this kit...Im starting to have trouble justfiying it haha.
                Want to:
                -Find out about the new iBug iPad install?
                -Find out about carPC's in just 5 minutes? View the Car PC 101 video

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