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  • suggestions on power supply

    Hello,

    I've been reading about power supplies and I'm still unsure what i need and what all my options are so i am submitting to a newbie question... will someone help me pick a power suppy?

    I did the power supply wattage calculator and it said 179 watts.
    I was planning on going with the opus 150 but now i'm not sure what my options are (or if i'm doing something wrong)

    Here is what I have:

    --mobo
    Mach speed micro atx
    http://www.newegg.com/app/ViewProdu...-187-006&depa=0

    --cpu
    1.3 amd athlon
    http://www.newegg.com/app/ViewProdu...-103-156&depa=0

    --ram
    512 pc-2100
    http://www.newegg.com/app/ViewProdu...-141-504&depa=0

    --slim/slot dvd-rom
    I can find the link to my slim slot load dvd player but it was like this but dvd:
    http://www.newegg.com/app/ViewProdu...-154-014&depa=0

    -soundcard
    Soundblaster 5.1 surround card:
    http://www.newegg.com/app/ViewProdu...-102-173&depa=0

    --hd
    80 gb 7200 rpm 3.5

    --fans:
    one heatsink/cpu fan, one intake, one exhaust fan, and one other fan to circulate air to the bottom of the case when it gets too hot (my case is built into a cubby hole where the bottom has no inlet for cool air)

    --gps mouse/antenna.


    Thanks in advance and I'd greately appreciate the help.

    `S
    New System in progress:
    M10k
    Phaze TD1500 ~> Dynaudio MD130
    Phaze TD1500 ~> Seas g18rnx/p
    Zapco Ref 500.1 ~ 12" tc-9
    Behringer DCX2496 ~ Envision Electronics psu
    Transflective Xenarc

    My Car Pc Install
    My Boat Pc worklog

  • #2
    check out: http://www.firingsquad.com/guides/po...pply/page2.asp

    ive been struggling with the psu crap for a whlie myself, heres what ive learned:
    the watts you calculate makes no difference at all, need to look at what voltages all your components operate at, and what current they draw

    the opus 150watt supplies the following currents at their respective voltages:
    5V STBY - 1A
    3.3V -10A
    5V - 10A
    12V - 5A
    -12V - 0.2A

    check this guide out

    it shows the current draw at whatever voltage for common computer components... though i have found that the currents shown for the processors at the bottom of the page MAY be inaccurate, as I cannot find two consistent sources that show the same currents for the same processor

    for instance i have a p4 2.8ghz processor, and i have seen 10.11amps, 7amps, 5.1 amps... the list goes on... so who knows

    i would assume a 1.3 athlon would be lots less than a 2.8 p4...

    someone here has a p4 2.something on an opus150watt... i dont know how, but that works

    if you really like the shutdown controller & input voltage tolerance features of the opus, i'd say give her a shot, but no guarantees, but it gets complicated when those features are not all in one


    ehh i ramble, hope this helps

    Comment


    • #3
      I emailed opus and they said: SFX.1215. 150W power supply will be minimum for you.

      Can anyone give me some feedback on what are my other options are?
      New System in progress:
      M10k
      Phaze TD1500 ~> Dynaudio MD130
      Phaze TD1500 ~> Seas g18rnx/p
      Zapco Ref 500.1 ~ 12" tc-9
      Behringer DCX2496 ~ Envision Electronics psu
      Transflective Xenarc

      My Car Pc Install
      My Boat Pc worklog

      Comment


      • #4
        I've looked into the power invertes and I'd like to not put as much strain on the electrical system as i think these will produce. Anyone have any suggestions? two m1-atx power supplies maybe?
        New System in progress:
        M10k
        Phaze TD1500 ~> Dynaudio MD130
        Phaze TD1500 ~> Seas g18rnx/p
        Zapco Ref 500.1 ~ 12" tc-9
        Behringer DCX2496 ~ Envision Electronics psu
        Transflective Xenarc

        My Car Pc Install
        My Boat Pc worklog

        Comment


        • #5
          ttt
          New System in progress:
          M10k
          Phaze TD1500 ~> Dynaudio MD130
          Phaze TD1500 ~> Seas g18rnx/p
          Zapco Ref 500.1 ~ 12" tc-9
          Behringer DCX2496 ~ Envision Electronics psu
          Transflective Xenarc

          My Car Pc Install
          My Boat Pc worklog

          Comment


          • #6
            Could someone clue me in if 'PW-200-V 12V, 200Watts ATX micro PSU', ITPS, and shutdown controller be a better choice?
            New System in progress:
            M10k
            Phaze TD1500 ~> Dynaudio MD130
            Phaze TD1500 ~> Seas g18rnx/p
            Zapco Ref 500.1 ~ 12" tc-9
            Behringer DCX2496 ~ Envision Electronics psu
            Transflective Xenarc

            My Car Pc Install
            My Boat Pc worklog

            Comment


            • #7
              No it's not. the ITPS can only regulate 60W. I however, am using the Pw-200V and a 7.2Ah battery to survive crank & keep the computer running after switching the ignition off. I'm still working on the regulator circuit but the PC can run off the battery for a good 20 minutes so it's all looking very promising .

              I'm running an AMD XP 2500+ barton underclocked to 1900+, Soyo k7vme cheapo m/b; 256mb ram, 160gb 7200 rpm seagate, PW-200V, usb keyboard, ps-2 miniature trackball currently. Max current draw so far was 7A with Prime 95 torture test. That's only 84W.
              Progress: 80% - Permanent install left.
              Motion LS800 Tablet PC and dock.
              Vista, Bu-535 GPS, RoadRunner, MPT2006.

              Comment


              • #8
                Originally posted by Arathranar
                No it's not. the ITPS can only regulate 60W. I however, am using the Pw-200V and a 7.2Ah battery
                .
                I have just starting to put my stuff together and have a PW200v I tried to run it up on the bench tonight with only a 7.2ah battery on and it failed to start just spun the fan once when I turned it on, but the board started ok when I plugged in the 150w psu that came with the case. Any ideas have not searched yet as I have other things to play with but saw your post and thought id'e ask on the off chance. The battery is stand alone but has showed over 13 v for 5 days without charging just wondering if its just not enough by itself to spin the pc up, and to idle to search for a 160ah one ive got in the shed somewhere(old landy battery if it woudn't start I could take the plugs out and get home on the starter moter lol) will fish out the other battery tomorrow and put it on charge for a couple of weeks.
                EPIA MII: 512m Ram: LinITX 8" Touch Screen: Carnetix P1290 PSU: 802b PCMCIA Wireless card: Slot DVD Player: Touchpad: Wireless Keyboard: BU303 GPS Mouse:
                Win 2000: RoadRunner Front End: Michelin Mapstore GPS: Netstumbler:

                Comment


                • #9
                  Hook up a multimeter to check the voltage and current draw when you try and start the computer. On mine, I see 5-7A current draw and the battery drops from the 12.85V no load voltage to about 11.8V fairly quickly then stabilizes. After that it drops slowly (over about 20 minutes) to below 11V. Eventually it hung when I resumed from standby with the battery only providing 10.8V. .

                  If your pc draws too much current (e.g. 10-12A), a 7.2Ah may not be able to supply that without dropping it's output voltage lower than the PW-200V and/or your pc are happy with. Since my PC was still running stably when the battery was at 11V (and monitoring software on the PC was seeing the 12V at only 10.3V!), I'm beginning to suspect my PC doesn't actually need the 12V much - but I've been told my AMD barton uses the 12V for the cpu. Since then I've read it's entirely up to the m/b manufacturer where they power the cpu from so really I've got no idea .
                  Progress: 80% - Permanent install left.
                  Motion LS800 Tablet PC and dock.
                  Vista, Bu-535 GPS, RoadRunner, MPT2006.

                  Comment


                  • #10
                    Originally posted by Arathranar
                    .
                    Thank for that I was asuming it was just not heavy enough for the first crank without been backed by its big brother, or still hot from a charge. But as my lcd screen turned up today I thought it was about time to start building instead of trying to absorb info from the users here,
                    EPIA MII: 512m Ram: LinITX 8" Touch Screen: Carnetix P1290 PSU: 802b PCMCIA Wireless card: Slot DVD Player: Touchpad: Wireless Keyboard: BU303 GPS Mouse:
                    Win 2000: RoadRunner Front End: Michelin Mapstore GPS: Netstumbler:

                    Comment


                    • #11
                      Ime not sure about the pull of my board its amercuryPVCLM-l with onboard everything including a factory clocked via processor clocked from (I think)800 to 1500. It may be because its overclocked its a bit fussy because I had to threaten it to get it to post anyway.
                      EPIA MII: 512m Ram: LinITX 8" Touch Screen: Carnetix P1290 PSU: 802b PCMCIA Wireless card: Slot DVD Player: Touchpad: Wireless Keyboard: BU303 GPS Mouse:
                      Win 2000: RoadRunner Front End: Michelin Mapstore GPS: Netstumbler:

                      Comment


                      • #12
                        Originally posted by old_lou
                        But as my lcd screen turned up today I thought it was about time to start building instead of trying to absorb info from the users here,
                        Well its a goer I am on it now on a wireless card. Will sort out the dc dc tomorrow
                        EPIA MII: 512m Ram: LinITX 8" Touch Screen: Carnetix P1290 PSU: 802b PCMCIA Wireless card: Slot DVD Player: Touchpad: Wireless Keyboard: BU303 GPS Mouse:
                        Win 2000: RoadRunner Front End: Michelin Mapstore GPS: Netstumbler:

                        Comment


                        • #13
                          Originally posted by Arathranar
                          No it's not. the ITPS can only regulate 60W. I however, am using the Pw-200V and a 7.2Ah battery to survive crank & keep the computer running after switching the ignition off. I'm still working on the regulator circuit but the PC can run off the battery for a good 20 minutes so it's all looking very promising .

                          I'm running an AMD XP 2500+ barton underclocked to 1900+, Soyo k7vme cheapo m/b; 256mb ram, 160gb 7200 rpm seagate, PW-200V, usb keyboard, ps-2 miniature trackball currently. Max current draw so far was 7A with Prime 95 torture test. That's only 84W.

                          Ahh.. this is so fustrating being a computer noob. thanks for your help.

                          I think i will go with a setup like this:
                          regulator post:
                          http://www.mp3car.com/vbulletin/show...lchair+battery

                          batt islator:$30
                          http://www.jcwhitney.com/autoparts/P...X/appId-385764

                          200w power supply: $60
                          http://www.mp3car.com/store/product_...products_id=40

                          startup/shutdown controller: $54
                          http://www.mp3car.com/store/product_...products_id=65

                          gel cell battery: $0-$60
                          http://www.batterymart.com/battery.mv?p=GEL-8GU1
                          (will try to find a used wheel chair battery first)

                          I think this would work...anyone think it wouldn't?
                          New System in progress:
                          M10k
                          Phaze TD1500 ~> Dynaudio MD130
                          Phaze TD1500 ~> Seas g18rnx/p
                          Zapco Ref 500.1 ~ 12" tc-9
                          Behringer DCX2496 ~ Envision Electronics psu
                          Transflective Xenarc

                          My Car Pc Install
                          My Boat Pc worklog

                          Comment


                          • #14
                            The regulator post you've mentioned doesn't really seem (from my quick glance) to actually have details of how to regulate the 12V into your pw-200. The pw-200 doesn't regulate the 12v, so you either need to not care (which probably means you need to be isolated from potentially destructive voltage spikes during crank. I'm not sure a battery isolator achieves that.

                            My 7.2Ah sealed lead acid battery cost me $10.
                            A diode to prevent low or zero voltage from the main battery is only about $2 but that might not match your needs.

                            Maybe you should summarize your intended setup and your understanding of the posts so we know what we're discussing. Otherwise we'll all have our own interpretation of the posts you'll linked and confusion will result!
                            Progress: 80% - Permanent install left.
                            Motion LS800 Tablet PC and dock.
                            Vista, Bu-535 GPS, RoadRunner, MPT2006.

                            Comment


                            • #15
                              Have you read this post on regulation?
                              http://www.mp3car.com/vbulletin/show...671#post355671
                              It details what I'm intending to try.
                              Progress: 80% - Permanent install left.
                              Motion LS800 Tablet PC and dock.
                              Vista, Bu-535 GPS, RoadRunner, MPT2006.

                              Comment

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