I have an Asus P8Z77-V motherboard and a hyper 212 evo cpu fan. One rear exhaust fan and two front intake fans all 120mm. I also installed the latest version of Asus Fan Xpert 2. My question is how do these two things interact? Is Q Control overriding Fan Xpert? Is Fan Xpert overriding Q Control?
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In theory, once you've run the Fan Xpert 2 calibration routine, that should be active within the OS.
Should I disable Q Control in the bios?
No need. The profile you apply in Windows is the active one. Leave the Q-Fan settings at default.