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Which PCI-E power cable should I use?

Discussion in 'Graphics Cards' started by JC316, Aug 16, 2006.

  1. JC316

    JC316 Knows what makes you tick

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    My X1800GTO came with a PCI-E to 4 pin molex power connector, my new Antec smart power 2.0 has a PCI-E cable on it. Now should I use the stock PCI to Molex, or should I use what comes off the power supply?

    I am not sure, but I think I killed my X1800XL by using a store bought adapter that used two molex adapters, I could be wrong about that though. If anyone has had any experience with this, please let me know.
  2. W1zzard

    W1zzard Administrator Staff Member

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    should make no difference .. i suggest you use the one from the psu since it's probably on its own rail and reduces the cable mess
  3. JC316

    JC316 Knows what makes you tick

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    Thanks Wizzard. I used the PS cable and it works fine. As an added bonus, it fixed my lockups when I overclock above 550. I am running 600/600 at 1.175V 2.0V now.

    I think since the molex used one power pin in order to power two pins on the card, it was causing stablity issues.

    Anyway, thanks for the information.
  4. ace80

    ace80

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    I shouldn't think it really matters what u use, although i would think you get a better more clean supply straight from the psu. When i had my X800gto2 i used to use the 4-pin to pci power adapter, then i bought a new psu that had the pci express power supply and used that instead. I did find that when i changed and was using straight from psu it helped my overclock ever so slightly.
    I now have a X1800gto, using the same psu, using the pci express power cable stright from the supply and have had no problems whatsoever. (although now i am upgrading psu due to not enough amps on the 12v when overclocking heavily)

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