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  • *noob* Power Requirement

    Dear all,


    My current setup:

    1 x VIA PM8M3-V Mobo
    1 x Intel Celeron D 331 2.66Mhz
    1 x DDR400 512mb RAM
    1 x Maxtor 3.5" 2mb 7500rpm HDD
    1 x Normal sized DVD Combo drive (IDE to USB connector)
    1 x powered USB 4 port hub
    1 x Liliput 619
    1 x USB BT
    1 x USB WiFi

    Soon to add list:

    GPS
    OBD

    I've checked my power requirements on the various sites posted here and my consumption varies (Note: Haven't added in Liliput 619 power consumption)

    From

    186watts (http://www.journeysystems.com/power_...calculator.php)
    166watts (http://carpc.kyferez.com/Tools/PSUWattageCalculator.php)
    103.5watts (Required CPU power: 91watts and Total Required PSU power: 155.24 watts) (http://www.ohmygodmyarmfelloff.com/MP3Car/PSUpower.asp)

    With the M2ATX power supplies:

    12v rail = 8A (96w)
    3.3v rail = 8A (26.4w)
    5v rail = 8A (40w)

    Well, can the M2ATX coop with this kinda requirement?


    Thanks in advance...

  • #2
    You're on teh right track.
    Ou may have missed this FAQ, I think: http://www.mp3car.com/vbulletin/showthread.php?t=68636

    Your CPU draws around 84w all by itself. That's pushihng the envelope, and you'll only have 12w for any other parts that pull 12v (screen, 3.5" HDD, normal-sized DVD drive, etc.) I figure this will come close to, if not overload your M2ATX.
    I'd look into a higher-rated PSU (Opus 250w or DSATX) or a CPU with a lower power draw for that motherboard.
    Have you looked in the FAQ yet?
    How about the Wiki?



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    • #3
      Originally posted by DarquePervert View Post
      You're on teh right track.
      Ou may have missed this FAQ, I think: http://www.mp3car.com/vbulletin/showthread.php?t=68636

      Your CPU draws around 84w all by itself. That's pushihng the envelope, and you'll only have 12w for any other parts that pull 12v (screen, 3.5" HDD, normal-sized DVD drive, etc.) I figure this will come close to, if not overload your M2ATX.
      I'd look into a higher-rated PSU (Opus 250w or DSATX) or a CPU with a lower power draw for that motherboard.
      Hi Darque,

      I've read the link you posted too. But it didn't state the processor I'm having? Not much of a computer guy, but it states Socket 775 on the specs of my CPU. Refering to your post of "84w", I'm guessing I'm using a Prescott processor?

      Looking at the link you provided again, it doesn't matter if I get a lower speed CPU, since it consumes the approx same amount of wattage, am I right on this?

      Hope this isn't spoonfed, but mind point me to a website that gives me the CPU choices that's using the same socket?


      Thanks in advance...

      Comment


      • #4
        Originally posted by SentraVIP View Post
        Hi Darque,

        I've read the link you posted too. But it didn't state the processor I'm having? Not much of a computer guy, but it states Socket 775 on the specs of my CPU. Refering to your post of "84w", I'm guessing I'm using a Prescott processor?

        Looking at the link you provided again, it doesn't matter if I get a lower speed CPU, since it consumes the approx same amount of wattage, am I right on this?

        Hope this isn't spoonfed, but mind point me to a website that gives me the CPU choices that's using the same socket?


        Thanks in advance...
        Other PRescott CPUs draw comparable amounts of power, but it's also very likely that your motherboard will support other configurations of P4 CPU that draw less power. Look for other socket 775-compatible CPUs.

        The Processor Electrical Specifications will show you. It's listed on that site as the Socket T. Most of the CPUs that use Socket T are higher-power CPUs, which suck lots of juice.

        My suggestion would be to bite the bullet and choose a different motherboard/CPU combination that's designed for lower-power use.
        Have you looked in the FAQ yet?
        How about the Wiki?



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        Comment


        • #5
          Hi guys... Just an update.

          I've successfully connected the Lilliput, powered using the M2ATX as per my list of hardware above. Guess I'm lucky.

          Got another question though,

          I've notice I've got my screen flickering. Is that normal? Or is that some sorta sign that I'm on the verge of power consuption?

          I'm currently powering it off from my work bench using an ATX PSU connected to the M2ATX. Well, it's working but am wondering if this means it'll work on the car too?


          Thanks!

          Comment


          • #6
            Not to get off topic too much but did you need that fan control cable in the faq in order to get youratx power supply to realize it is on and provide power to the m2?

            Comment


            • #7
              Originally posted by SentraVIP View Post
              Hi guys... Just an update.

              I've successfully connected the Lilliput, powered using the M2ATX as per my list of hardware above. Guess I'm lucky.

              Got another question though,

              I've notice I've got my screen flickering. Is that normal? Or is that some sorta sign that I'm on the verge of power consuption?

              I'm currently powering it off from my work bench using an ATX PSU connected to the M2ATX. Well, it's working but am wondering if this means it'll work on the car too?


              Thanks!
              Try changing the screen refresh rate to something other than 60 Hz. that usually helps.

              The symptoms of an overloaded M2 are things like: shuts off unpredictably just after power up, cycles on and off, fries some parts on the M2, or fries the mobo. Are you sure you want to risk it?
              ~Jimmy

              Comment


              • #8
                Or just early expiration.
                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

                Comment


                • #9
                  Originally posted by ckny View Post
                  Not to get off topic too much but did you need that fan control cable in the faq in order to get youratx power supply to realize it is on and provide power to the m2?
                  Hi!

                  I just hack the ATX PSU and short the pins to get power to the M2ATX as discribe in the FAQ... I also have a switch on the IGN wire.

                  Comment


                  • #10
                    Originally posted by JimmyFitz View Post
                    Try changing the screen refresh rate to something other than 60 Hz. that usually helps.

                    The symptoms of an overloaded M2 are things like: shuts off unpredictably just after power up, cycles on and off, fries some parts on the M2, or fries the mobo. Are you sure you want to risk it?
                    I've changed the refresh rate. Still there's flickering. Maybe due to electronic interference? Everything's on a small table now.

                    Well, I don't have any of the symptoms you mentioned now. But can I safely assume that it will be as good when I install it in the car?


                    Thanks!

                    Comment


                    • #11
                      Run it for several hours to make sure it doesn't overheat. If it's good, it's good and you can probably try it in the car.

                      Like I said earlier, it is possible that it will shorten the life of the M2, but maybe not. What the hell, give it a run.
                      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

                      Comment


                      • #12
                        Err... Thanks for the reply. Mind I ask, what are the symptoms of overheating? It catches fire? *I hope not*

                        Or something more subtle like, machine hangs and stuffs?


                        Thanks

                        Comment


                        • #13
                          If a PC (specifically, the CPU) overheats, you'll have one of a few symptoms, depending on the hardware and it's features:
                          - It could hang up without warning, as you mentioned.
                          - It could simply shut off, again without warning.
                          - It could give you an alarm if the motherboard supports a temperature alarm (not all do)
                          - The CPU could fry, although not burst into flames. If the CPU fries, it's dead and must be replaced.

                          I suggest checking out Motherboard Monitor 5. It will monitor system temps using built-in temp sensors (if your system has them, which it probably does) and can take action if the temps reach a pre-set limit. The action could be displaying a warning, playing a sound or forsing a shutdown.
                          Have you looked in the FAQ yet?
                          How about the Wiki?



                          Under normal circumstances, a signature would go here.

                          Comment


                          • #14
                            Tried MBM5. They don't have my specific mobo model.

                            Funny thing about the MBM though, I tried a few models which I think is as close as mine, but the readings are different? Be it temp, voltage and etc...

                            Anyway, just a quick update...

                            I'm calling my next setup 'INFERNO'

                            The M2 burst out in flames!

                            Well, I'm stress testing it with heavy CPU load last night for a few hours and 'Whoosh'... Flames come out!

                            Like I said, a system revamp and a new name for my project...

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