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  • Desktop in truck questions and PW-200-M question.

    Hey guys, newbie here and I want to throw a computer into my s10!
    I was wondering if a PW-200-M supply would be able to power an old-ish emachines computer-AMD athlon cpu, 512mb ram, and a 80gb hd (Probably upgrade to a larger one). Plane is to gut it from the case and make a new box for it, and put it under the seat.

    Then put a 7" touchscreen where my radio is mounted, and then a headphone jack to rca cable hookup with a splitter (Making 2 sets of 2 rcas) to my subs amp, and my mids/high amp.

    But I need to know if that supply will be sufficient enough or if I would need a larger one (On a budget, this will be a slow build as I have the money to do so.)

    If I need a larger supply, What would be best? (Cheapest and work) Either a supply or regulator or? I would prefer not to use an ac/dc converter because the stock supply is large and I need more space then i have already lol.

    Another question with you car puter guys, When you have a pc setup, Do you have a head unit or do you use your pc as one like i plan? Also do you keep the normal cd/dvd drive the pc uses? (To upload new software play dvds/music etc?)

    Any help would be great!

  • #2
    Well, I've been on this site ALL day, gathering information.

    Apparently those picopsu's (pw-200-m) are pieces of crap, because they are unregulated. (SUCKS because all other psu's are $80+)
    I did find a few china "M2 atx's" But I think they are fakes, and still $50.

    The touchscreen I am looking at is a china ebay unit, but looks decent for $140.

    I have the desktop MB out of the case, and ready to make a new one (Thinking lexan/plexi)

    I have read that the desktop HDD are not the way to go, but rather the 2.5 laptop hdd's. I'd prefer to use my desktop HDD as thats what I have available, but i also have an 80gb 2.5, but unsure of its condition.

    Still need to know about the music system, How you guys have your set up, using a headunit or straight to amps? (And if straight to amps if i could do a headphone to RCA's with 2 splitters to make 2 sets of rca outs (one for subs, one for mids and highs) plugging the headphone end of the rca straight into the motherboard.

    Also would like to know about softwares-Freeware preferably. A good music software is most vital to me.

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    • #3
      Do not go the cheapest route on your power supply. You will end up with all kinds of gremlins over the course of a car PC installation which will all be tied to the lack of adequate power for your system. Based on the fact that you're using a desktop motherboard/CPU combo, i'd suggest bare minimum a genuine m2. I ran an athlon 2800 (think it was 2.2ghz) some years back and even with the m2 and extra point of load power supplies i never had a stable environment.
      mp3Car.com Senior Tech Blogger (Want a product reviewed? Contact me.)
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      • #4
        Originally posted by Sonicxtacy02 View Post
        Do not go the cheapest route on your power supply. You will end up with all kinds of gremlins over the course of a car PC installation which will all be tied to the lack of adequate power for your system. Based on the fact that you're using a desktop motherboard/CPU combo, i'd suggest bare minimum a genuine m2. I ran an athlon 2800 (think it was 2.2ghz) some years back and even with the m2 and extra point of load power supplies i never had a stable environment.
        Does a desktop mb and cpu really eat that much juice? I mean, Whats an amd athlon 1600 take up? 65 watts max? Then the mb maybe 15w at the most, and a hard drive depends if i go with a desktop/laptop hd but I dont see how that would take up 160 watts? Maybe I'm missing something.

        What mb and cpu's do you guys use? I was under the impression you guys used a regular desktop type mb and cpu?
        The only reason I'm considering doing a carpc is because I though I could get away with it rather cheap considering I had an extra desktop pc sitting around and thought I could get a cheap ebay psu/touchscreen

        Comment


        • #5
          ^ but because you didn't list any specific model numbers, be sure to check a pc power calculator to make sure that the m2 is sufficient for your needs.

          hdd's: in theory, 2.5" drives have less moving mass, so in theory are better. the reality is that there has not been any proof here that 2.5" drives are better then 3.5 drives--in one case, a single 3.5" drive outlasted 2 car wrecks-- the cars were totaled...

          sound: you can do it either way. i run 'headless', but many other members keep a HU installed for a backup audio source, or for easier integration of am/fm..
          My OLD 2001 Mitsubishi Eclipse GT:
          "The Project That Never Ended, until it did"


          next project? subaru brz
          carpc undecided

          Comment


          • #6
            What's your "headless" setup? How do you have it hooked up?

            Comment


            • #7
              no head unit.

              i am a little different because i installed a carpc for a full-active audio setup-- where the carpc controls what frequencies go to which speakers, but the concept-- where you add soem 3.5mm-to-rc adapters, and split the signal to the different amps is the easiest method.
              My OLD 2001 Mitsubishi Eclipse GT:
              "The Project That Never Ended, until it did"


              next project? subaru brz
              carpc undecided

              Comment


              • #8
                So my method will indeed work? I was worried the sound would be too diluted by the time it reached the amps. Your setup sounds interesting though, how did you accomplish that?

                Comment


                • #9
                  your method will for sure work with aftermarket amps with a gain control. because factory amps don't have a gain control to adjust for different input sensitivity, they can be less consistent.

                  as for how i accomplished my setup--check the posts in the "high end car audio section"
                  My OLD 2001 Mitsubishi Eclipse GT:
                  "The Project That Never Ended, until it did"


                  next project? subaru brz
                  carpc undecided

                  Comment


                  • #10
                    So I have 2 emachines desktops, one with an amd 1600+ xp CPU the other with an amd sempron. Would an opus 150 work for one of these?
                    Or I have an HP desktop with a p4 CPU.

                    Unfortunatey since they're name hrand desktops I can't underclock/volt the CPUs

                    Comment


                    • #11
                      You need to look up the max TDP for the specific CPUs in the systems you're considering.
                      There are different variants of CPUs that may have different power draws, so knowing that it's a Pentium 4 at 2.8Ghz doesn't provide enough information.

                      I suggest downloading CPUID and running it on each to determine EXACTLY which CPU you have in that system.
                      Cross-reference that on Chris Hare's CPU Electrical Specs site (Google it) for the Max TDP.

                      Use that information to determine what PSU choices would work for your hardware.
                      All the CPUs list the output for each rail. Your focus needs to be on the 12v rail.
                      Have you looked in the FAQ yet?
                      How about the Wiki?



                      Under normal circumstances, a signature would go here.

                      Comment


                      • #12
                        Or if you know the cpu model number you can go to http://www.cpu-world.com/index.html All info on all cpu's. hope this helps SNO

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