Ower 8 Pin Motherboard with no 8 pin PSU?

Discussion in 'Motherboards' started by byteninja2, Jun 9, 2012.

  1. byteninja2

    byteninja2 banned

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    I got a asus p8p67, and am waiting to get a CPU for it. But, I noticed the asus uses a 8 Pin ATX power connecter, and my psu only has 1 6 pin and 1 4 pin. Could I like use half of the four pin and 6 pin to power the motherboard? Or, do I have to buy a 8 pin adapter?
     
  2. wolfeking

    wolfeking banned

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    are you talking about the CPU power? If so, thats not an ATX connector. Its a modified P4 connector. But you can use the 4 pin to power it. I would not get an adapter as it will still get the same power as the P4 your using.
     
  3. johnb35

    johnb35 Administrator Staff Member

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    If you plan on gaming with it, then its recommended to get a new psu with an 8 pin 12volt connector.
     
  4. spirit

    spirit VIP Member

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    Wolfe's right, you can still power the system fine with just one 4-pin P4 connector because it did it on my P75P55D-E for a while...

    ...but I'd follow what John said above and get yourself a better power supply with all 8 pins. :)
     
  5. byteninja2

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    Should I use a 6 pin? That should give some more power.
     
  6. johnb35

    johnb35 Administrator Staff Member

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    The 6 pin isn't used for the cpu, its used for a video card. You need to upgrade your psu to one that has an 8 pin cpu power connection.
     
  7. byteninja2

    byteninja2 banned

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    This year, in about 6 months, my psu will be upgraded. My gpu is taking all the draw d\from the pci, thats what scares me. Im putting all that power on the motherboard. And, some mobos use a 6 pin, I have seen it. And, isnt pci 75 watts max, so why does this sat 180 watts in the power section?
    http://techgage.com/article/asus_geforce_210_gt_220_gt_240/10
     
  8. johnb35

    johnb35 Administrator Staff Member

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    There is no such thing as a 6pin cpu connector, it's either 4pins or 8 pins. The 6 pin is used strictly for video cards.
     
  9. byteninja2

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    [​IMG]
    Whats this?
     
  10. johnb35

    johnb35 Administrator Staff Member

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    What is the model of the board so I can look it up? I do believe I see 8 pin connections up top.
     
  11. wolfeking

    wolfeking banned

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    That is a 6 pin power to the PCIe that some boards add for CF/SLI setups. It will not power the CPU at all.
     
  12. FuryRosewood

    FuryRosewood Active Member

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    supplementary power for PCI-e lanes, my biostar t-power n750 had a 4 pin molex for powering those lanes you do want to have 8 pin on your cpu power, a 6 pin pci-e power cable is not the same as a 2x4 pin 12 volt cpu power connector.
     
    Last edited: Jun 10, 2012
  13. byteninja2

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    Okay guys thanks, can I run it with a 4 pin and my low power 240 that takes all its power from a pcie?
     
  14. spirit

    spirit VIP Member

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    It would probably run OK, but I'd upgrade to an 8-pin PSU ASAP.
     
  15. byteninja2

    byteninja2 banned

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    Just figured out something.I guess that a 4 pin is all you need.Some electric association requires the motherboard to have a bigger input of power just to be safe.And a 4 pin is all you need, I guess, as the wires can carry enough power to a 8 pin with a 4 pin.But i ma still upgrading my psu as soon as I get my sli setup in 6 months.
     
  16. FuryRosewood

    FuryRosewood Active Member

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    the six pin is optional, you could run with a 4 pin, but i dont recommend it myself.
     
  17. StrangleHold

    StrangleHold Moderator Staff Member

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    The six pin is a PCIe connector, not keyed the same or wired the same as a 4/8 pin CPU power connector. The extra 6 pin connector is for PCIe slots if your running multi cards for extra power to the slots. If a board has a 8 pin CPU power connector, all are wired different. Some will work just fine with a 4 pin. Some will not boot at all with a 4 pin. Some will run fine, but you will have problems with a higher wattage processors, especially if your overclocking.
     
  18. byteninja2

    byteninja2 banned

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    I think it will run with a i3, only 65w I think.
     
  19. ClearCase

    ClearCase New Member

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    Last edited: Jun 11, 2012

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