Delivering enough power?

This is a discussion on Delivering enough power? within the Tech Board forums, part of the Community Boards category; I just got done discussing a "power managment problem" with a friend. Roughly what im gearing towards is powering a ...

  1. #1
    In your face... ha ha ha Liger86's Avatar
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    Delivering enough power?

    I just got done discussing a "power managment problem" with a friend.

    Roughly what im gearing towards is powering a high end graphics card with high end CPU, example AMD-FX60 and 7900 GTX run in SLI. Also the system has 10 (ten) hard drives, 10 hard disks.

    Obviously a 400Watt PSU wont handle all of this, right? So, how stupid or not is it to modify the case to have 2 PSUs. Of course it has to be a big enough case, thats obvious.

    Will there be any sort of problems or negative outcome on having 2 really powerfull PSU close together? Aproximatly 1200watts total.

    The scenario is that one PSU would feed the motherboard and video cards and the second PSU will power only hard disks and CD drive.

    Does anyone see this layout as a hazard?

  2. #2
    Master of Puppets rwmarsh's Avatar
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    Well, they do make very powerful single PSU's (900+ watts). Check this one out, it may be useful, and would be easier than modifing a case to accept 2 PSU's.
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  3. #3
    In your face... ha ha ha Liger86's Avatar
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    $349.99 is kind of a lot of money, it seams like 2 $70 PSUs would be cheaper...
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    Master of Puppets rwmarsh's Avatar
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    Just an example, the first one I found...
    Using DEV-C++ Under Windows XP
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    (?<!re)tired Mario F.'s Avatar
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    I don't see much of a problem having two PSUs somewhat close together. If the case supports it (I don't anything anything short of a Mid-T will), go ahead.

    You just want to make sure you buy top notch material. Don't be greedy. If you have 10 HDs there (god knows why), just make an extra effort and buy 2 good PSUs designed to dissipate as much heat as possible.
    The programmer’s wife tells him: “Run to the store and pick up a loaf of bread. If they have eggs, get a dozen.”
    The programmer comes home with 12 loaves of bread.


    Originally Posted by brewbuck:
    Reimplementing a large system in another language to get a 25% performance boost is nonsense. It would be cheaper to just get a computer which is 25% faster.

  6. #6
    In your face... ha ha ha Liger86's Avatar
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    Quote Originally Posted by Mario F.
    I don't see much of a problem having two PSUs somewhat close together. If the case supports it (I don't anything anything short of a Mid-T will), go ahead.

    You just want to make sure you buy top notch material. Don't be greedy. If you have 10 HDs there (god knows why), just make an extra effort and buy 2 good PSUs designed to dissipate as much heat as possible.
    For sure a case is a full tower with some room on the bottom to be modified to use 2 PSUs, and of course good ventilation for the HDs. But my main concern is figuring out possible hazards. And finally a little thinking when it comes to turning on both PSUs with the front power button...
    From Ukraine with love!

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  7. #7
    Cat without Hat CornedBee's Avatar
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    Indeed - ATX PSUs are soft-controlled, so you'd have to find a way to coordinate them.

    I found this:
    http://www.xtremesystems.org/forums/...ad.php?t=78807
    And this:
    http://www.overclock.net/power-suppl...ply-guide.html

    Google rules.
    http://www.google.at/search?q=multip...utf-8&oe=utf-8
    All the buzzt!
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    In your face... ha ha ha Liger86's Avatar
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    Quote Originally Posted by CornedBee
    Indeed - ATX PSUs are soft-controlled, so you'd have to find a way to coordinate them.

    I found this:
    http://www.xtremesystems.org/forums/...ad.php?t=78807
    And this:
    http://www.overclock.net/power-suppl...ply-guide.html

    Google rules.
    http://www.google.at/search?q=multip...utf-8&oe=utf-8
    Those are some really good links indeed thanks for the help. The one I found most interesting is the second one, now i know which wires need to be jumped simultaniously with the main PSU for example to be able to have them both start at the same time when i press the power button.
    From Ukraine with love!

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  9. #9
    (?<!re)tired Mario F.'s Avatar
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    There will be an excess of heat in-around the PSUs. That's what I mean. Not the HDs. Being a full tower I guess is good as long as there is some space between each PSU (don't do this if they are going to be touching each other). A cheap PSU not always offers good ventilation. They tend to get very hot.

    You are now going to have two, inside a closed case in which fans are what separates a working machine from a meltdown. I would really suggest you spend good money on the PSUs.

    And... a extra fan for your case blowing out. Actually, perfect would be an extra pair of fans. One blowing in and another out. If you don't want to spend on the PSUs, at least consider the case fans.
    The programmer’s wife tells him: “Run to the store and pick up a loaf of bread. If they have eggs, get a dozen.”
    The programmer comes home with 12 loaves of bread.


    Originally Posted by brewbuck:
    Reimplementing a large system in another language to get a 25% performance boost is nonsense. It would be cheaper to just get a computer which is 25% faster.

  10. #10
    The Right Honourable psychopath's Avatar
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    Keeping your rig in a large container filled with liquid nitrogen may also be benificial.
    Memorial University of Newfoundland
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    Mac and OpenGL evangelist.

  11. #11
    In your face... ha ha ha Liger86's Avatar
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    Quote Originally Posted by psychopath
    liquid nitrogen may also be benificial.
    trying to keep the system as maintence free as possible.

    Quote Originally Posted by Mario F
    If you have 10 HDs there (god knows why),
    Well why do you think blockbuster has unlimited rentals for $27 or something like that a month? *lightbulb*
    From Ukraine with love!

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