powering multiple motherboards with one supply?

This is a discussion on powering multiple motherboards with one supply? within the Tech Board forums, part of the Community Boards category; Is it possible to power multiple motherboards with one supply? Are there y-adaptors? I suppose I would need a larger ...

  1. #1
    Linguistic Engineer... doubleanti's Avatar
    Join Date
    Aug 2001
    Location
    CA
    Posts
    2,459

    powering multiple motherboards with one supply?

    Is it possible to power multiple motherboards with one supply? Are there y-adaptors? I suppose I would need a larger power supply, but I want to do a case-mod that allows me to stack motherboards, so that I can make my cluster, well, into a small cluster. I hope so. I don't know where I can find current values for an ATX-style motherboard, or if the currents should all be the same if you have different motherboards at all. Let me know if you have ideas. I saw someone stuff a PC into a Nintendo, and now I'm inspired.
    hasafraggin shizigishin oppashigger...

  2. #2
    Registered User
    Join Date
    Jul 2007
    Posts
    43
    ur still around eh

  3. #3
    Linguistic Engineer... doubleanti's Avatar
    Join Date
    Aug 2001
    Location
    CA
    Posts
    2,459
    yup... still around... still geekin' it up... =p
    hasafraggin shizigishin oppashigger...

  4. #4
    Woof, woof! zacs7's Avatar
    Join Date
    Mar 2007
    Location
    Australia
    Posts
    3,459
    Get some pliers and carry on in that fashion

  5. #5
    Kernel hacker
    Join Date
    Jul 2007
    Location
    Farncombe, Surrey, England
    Posts
    15,677
    Yes, I'm pretty sure that can be done. You obviously have to watch the power consumption, because even ONE motherboard is often capable of getting a power-supply pretty close to it's limits if it's not the top end of the range. If you have older style processors and memory, you may have better luck. If you try to do this on "top of the range" processors, it's probably less expensive (and a whole lot easier) to use a power-supply per motherboard.

    I very much doubt that there are any Y-splits available on the market.

    --
    Mats

  6. #6
    Captain Crash brewbuck's Avatar
    Join Date
    Mar 2007
    Location
    Portland, OR
    Posts
    7,238
    Quote Originally Posted by doubleanti View Post
    I don't know where I can find current values for an ATX-style motherboard, or if the currents should all be the same if you have different motherboards at all.
    The currents are irrelevant. All that matters is that 1) The PSU supplies the right voltage for all the boards and 2) The total wattage of the PSU is larger than the combined wattage of all the boards.

    If you take the total wattage and divide by the voltage, you get the total current, but that's not really the point. You need to supply the POWER. If the power is sufficient, the current will be sufficient.

    With both boards hooked up, turn them on, and measure the DC voltage off the power supply. If it drops more than a few tenths of a volt below nominal, you are overloading the PSU.

    Also, remember that components on the motherboard may suddenly decide to draw a lot of power momentarily. With only a single board, this is not a problem, but if you are already pushing the PSU to the max, this could overload it, with results varying from the PSU switching off in an overload fault, to burning out the PSU or motherboards.

  7. #7
    Linguistic Engineer... doubleanti's Avatar
    Join Date
    Aug 2001
    Location
    CA
    Posts
    2,459
    I figured if you knew the peak current per pin on the motherboard power plug you could calculate the intake since you'd know the voltages too for the pin out. Just like for your IDE/SATA devices you can calculate the power consumption since it lists how much current each pin draws, and you know how much each pin provides as listed on the PSU. Thanks for the tips guys. I guess it's a matter of experiment now. Where can I get the female end of a PSU plug in case I need to make my own power splitters?
    hasafraggin shizigishin oppashigger...

Popular pages Recent additions subscribe to a feed

Similar Threads

  1. Replies: 16
    Last Post: 06-08-2009, 03:03 PM
  2. hmm i think i broke something (power supply)
    By MisterSako in forum Tech Board
    Replies: 1
    Last Post: 02-11-2006, 10:32 PM
  3. Phantom redefinition
    By CodeMonkey in forum C++ Programming
    Replies: 6
    Last Post: 06-12-2005, 05:42 PM
  4. Linker errors - Multiple Source files
    By nkhambal in forum C Programming
    Replies: 3
    Last Post: 04-24-2005, 02:41 AM
  5. Replies: 1
    Last Post: 05-01-2003, 02:52 PM

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21