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6pin AUX to 6pin PCI-E connector possible for modular PSU?

Hey everyone and thank you for taking the time to read my question.

I have a silverstone strider plus 500W modular PSU powering a sapphire 7950 Boost that has 2x 6pin PCI-E power connectors.
http://silverstonetek.com/product.php?area=en&pid=274

The back of the psu has 1 connector for an 8pin PCI-E and 3 connectors for 6pin AUX (Sata/molex). My question is if it is possible to plug in a 6pin PCI-E cable into one of the 6pin AUX connectors? The reason I ask is because I am sleeving my PSU and making my own cables, and want to avoid double wires from the 8pin PCI-E connector into 2x 6pin-PCI-E connectors for my graphics card. It would be a lot easier and look a lot nicer to create a 6pin aux to 6 pin PCI-E cable, but I am worried that the pins are powered differently. From my understanding the AUX connectors use +5V while PCI-E use +12V? Please correct me if I am wrong or enlighten me if this would be possible. Thanks!
2 answers Last reply Best Answer
More about 6pin aux 6pin pci connector modular psu
  1. Best answer
    You are actually quite lucky, silverstone was kind enough to provide the pinouts of their modular connectors, they can be found in this document
    http://silverstonetek.com/goods_cable_define/st50f-p-cable-define.pdf

    The PCI-e connector is H3 which is 3 +12V, and 5 Com lines in the PSU, the aux connectors (H5/H9) have a 12V, 5V, 3.3V, and 2 Com lines, so normally no an Aux plug cannot feed a PCI-e connector.

    And while you could make a cable to force it to, a single 12V pin should not feed the power to a PCI-e connector so even though having the pinout of the PSU allows you to make the cable to do it, i would definitely advise against it.
  2. hunter315 said:
    You are actually quite lucky, silverstone was kind enough to provide the pinouts of their modular connectors, they can be found in this document
    http://silverstonetek.com/goods_cable_define/st50f-p-cable-define.pdf

    The PCI-e connector is H3 which is 3 +12V, and 5 Com lines in the PSU, the aux connectors (H5/H9) have a 12V, 5V, 3.3V, and 2 Com lines, so normally no an Aux plug cannot feed a PCI-e connector.

    And while you could make a cable to force it to, a single 12V pin should not feed the power to a PCI-e connector so even though having the pinout of the PSU allows you to make the cable to do it, i would definitely advise against it.


    Thanks so much for the quick response. The pin-out for the connectors was a great find.
    I guess I'll have to live with double wires.
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