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Thread: will the opus 150 power my system? I have all the figures

  1. #11
    Newbie
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    Apr 2005
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    45
    Zip -

    I now know why the engineer at OPUS was not worried about the 12 volt rail. Using the last post as reference, all (or most) of the cpu power is being pulled off the 5 volt rail. This is probably why he wanted to put the POL on the 5volt and not the 12volt rail. it would give the extra 2 amperes required to keep the psu under max amperage load.

    These are my new figures.

    3.3 volt rail
    ---------
    3.0 AMPS for motherboard/ onboard devices
    1.0 AMP for onboard video (amd says 3.0 AMPS for agp gpx card)
    0.5 AMP for PCI sound card
    --------------------------
    4.5 AMPS total for the 3.3 volt rail (Opus 10A max, 13A peak)

    5 volt rail (PROBLEM RAIL)
    ----------
    6.0 AMPS for CPU
    2.0 AMPS for motherboard/ onboard devices
    2.0 AMPS for 1x DDR dimm 256
    0.5 AMP for PCI sound card
    0.8 AMP for IDE hard disk 3.5"
    2.0 AMPS for 4 USB devices
    1.5 AMPS for DVD rom 5.25"
    -----------------------------
    14.8 AMPS total on the 5 volt rail (Opus 10A max, 13A peak)

    12 volt rail
    --------------
    0.3 AMP for motherboard/ onboard devices
    0.45 AMP for IDE hard disk 3.5"
    1.5 AMPS for DVD rom 5.25"
    0.3 AMP for cpu fan
    0.6 AMP for case fan
    0.5 AMP mouse and keyboard

    stuff outside case
    ------------------
    1.0 AMP for lilliput touch screen (I want to run it off the OPUS)
    0.3 AMP for relay to turn on amplifiers in car
    --------------------------------------------------
    4.35 AMPS total on the 12 volt rail without case fan (Opus 5A max, 6.5A peak)
    4.95 AMPS total on the 12 volt rail (if cooling is a problem)

  2. #12
    FLAC -zip-'s Avatar
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    Glad things are working out for you intense. Have not checked Opus website on the POL, but if you need one they will make one for you even if it not released yet. They were going to do that for me.

    Also, dont forget to get them to mod the Opus for removing the ATX (standby) on the 5v line. That way your USB ports will shut off when there is no power.

    I forgot to do that when I ordered mine, now I have to send it back
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  3. #13
    MySQL Error MatrixPC's Avatar
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    If you can build the Sproggy 4.5 and modify the PCB a little, it will power the spec well.
    The current sproggy has 10A on 3.3, 10A on 5.0 and 2 X 5A on 12. You can modify it to have more current on 5V and less on 3.3V (5A on 3.3 and 15A on 5V). That is how I power my Matrix PC.
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  4. #14
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    i have updated my first post for anyone who would like the information.

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