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NZXT Kraken X40 Installation Question

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July 21, 2013 6:21:46 AM

I am currently in the process of building a new PC and using water cooling for the first time in the form of a NZXT Kraken X40 on a MSI Gaming Z87 GD65 board. The power for the X40 pump and the radiator fan uses a 3 pin connector that must be connected to the CPU fan header (no auxiliary power - everything runs off of this 3 pin connector). I know how to connect a 3 pin to a four pin CPU fan header but my question is this:


    Every review/overview has stated that I need to make sure the CPU fan header is running at a constant 12V. First of all, shouldn't that be automatically the case as I am connecting a 3 pin power connector to 4 pin connector? With no pwm, isn't the default full power?



    If I do need to check on this, how do I do this from the BIOS? Do I need to simply switch the CPU fan control to manual and set it to 100% - is that the same as making sure the voltage is constant?

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July 21, 2013 6:38:32 AM
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July 21, 2013 8:42:57 AM



Right, but is there anything that needs to happen after that to ensure the pump is receiving full power all the time and that the CPU fan header isn't being throttled by lower voltage? Would setting the fan speed to 100 esure the proper voltage?
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