I am planning to get two Gentle Typhoon AP-15 fans(non-PWM) for my 240mm radiator. I am currently using Asus P8Z77-V PRO. I have just found out that Fan Expert 2 can only control chassis fans(can be non-PWM) and not CPU header fans. I believe the CPU fan controls in BIOS are also only PWM.
Are there any fixes besides getting a fan controller? I was thinking to connect two of the chassis fans to the CPU-header and and free up spaces and connect the GT AP-15s to the chassis fan slots so that I can connect the fans by Fans Expert 2. Basically swop the fans.
You are correct the CPU headers control PWM fans only. You can swap the fans around if you wish - the Chassis fan reference temp is the same as used for the CPU. Then use Fan Xpert 2 and see if you can get the speeds you want etc.