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Thread: Corsair Link and RM650i fan

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    Default Corsair Link and RM650i fan

    I guess our host Jon is the one who may right answer, but who knows (Wolfie? Tazz?)?

    With the RMi-series units the Corsair Link software let to run the PSU fan at a fixed percentage speed (I suppose a percentage of the 12V supply, as on mobos), instead than running the PSU as semi-fanless (default behaviour).

    How does that actually work? Will the fan spin at that speed up to full power regardless of temp and load? Is there any unknown minimum speed built-in? Is that setting a permanent one or do I need to run Corsair Link at boot?

    Thanks in advance for any hint!
    Best, Luca

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    The "fixed" settings in Link only set a minimum RPM. If the fan controller feels the need to run the fan faster, because the temps are too high, then it will do so.

    That said: It's very UNLIKELY that the fan will spin faster because, even at 40% PWM, the provided airflow is adequate to keep the heat moving through and the fan pretty much stays at 500 to 700 RPM.

    UNLESS....

    The fan actually contributes to sucking more hot air in, like if the intake is right up against a graphics card or something. But since most people mount their PSU with the fan facing down, taking in ambient temperature air, that fan rarely ramps up.

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    Thanks Jon: is that setting a permanent one, or does it need the Link running at boot?
    Best, Luca

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    The MCU actually uses AC power to keep settings and there's no EEPROM. As long as the PSU has AC power, it will keep that setting. Once you unplug the PSU or flip the power switch on the back, you lose it.

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    Thanks again Jon: so fixed min speed with 40% PWM minimum setting and AC power always needed.
    Last question: when a C-Link enabled unit looses AC, and you should re-apply any personalized setting, does the unit need to be rebooted (as I think), or any change is actually applied "on the fly"?
    Best, Luca

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    About 15 seconds after you "apply settings" in Link, the unit should respond.

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