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Thread: How important are in-line capacitors?

  1. #1
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    Default How important are in-line capacitors?

    I have a Seasonic FOCUS Plus SSR-750FX power supply, and an EVGA GTX 1080 SC GPU. This GPU has only takes one 8-pin power cable, though the PSU only comes with cables that have two 8-pin plugs at the end of them.

    Its not a huge deal, though I have a glass windowed case, so the extra 8-pin dangling off isn't preferable. I thought about getting one of those extensions, but figured I'd try to get something from the manufacturer, so I contacted Seasonic. They said they don't sell the single slot cables themselves, but directed me to their partner's website:

    https://www.btosinte.com/Seasonic-8p...N-8-62PCIe.htm

    I thought great, only ~$11 after shipping/taxes, except that it's out of stock. After talking with BTOS and Seasonic, it sounds like they may not be making that cable anymore. Seasonic support suggested I get this cable:

    https://www.btosinte.com/Seasonic-8p...S-862PCIeB.htm

    It's the same cable without the inline capacitor. I asked what the implications of that are, they said:

    Yes it's safe. Inline are put in order to reduce ripple to very low level. Without you will be still below the average. Not using them is not increasing any risk or harm to PSU or components. You are good to go.
    What are your thoughts? I do have my machine connected to a UPS, if that makes a difference.

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    Default

    Seasonic is correct.

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    Default

    The caps are totally and completely optional.

    All they do is improve the ripple a tiny bit, but even without the capacitors, the ripple is among the best-in-class.

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    Thank you! I will probably pick this up then

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    Do in-cable capacitors help at all with the high slew-rate of some video cards?
    Last edited by ashiekh; 03-31-2019 at 09:12 PM.

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    main improve : good review
    mainboard / vga have huge solid capacitor filter input. but the DC load use a tiny rifa 2,2nF film capacitor

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