« Reply #2 on: December 24, 2015, 02:00:45 pm »
I haven't used a z170 series board yet, but I use a stock 3 pin CPU cooler on my z97 board and it's speed varies based on heat and load. You don't get the granular control a 4 pin fan provides, but fan RPM should vary even if a 3 pin is used.
There are exceptions. I only have SIV installed. Others have reported unexpected fan behavior when their BIOS settings conflict with easytune or ANY of the fan control utility software. Further, the z100 series boards come with auto green, power management, and additional utilities that could cause undesired behavior if used in conjunction with conflicting BIOS settings. Ensure you are using correct BIOS settings as dmdilks points out. OS based utilities can override the profiles set in BIOS.
« Last Edit: December 24, 2015, 02:20:39 pm by shadowsports »
![](https://forum.giga-byte.co.uk/Themes/Reseller/images/ip.gif)
Logged
Z390 AORUS PRO (F10) \850w, 9900K, 32GB GSkill TriZ RGB - 16-18-18-38, RTX 3080Ti FTW3 Ultra, 960 Pro_m.2, W11
Z370-HD3P (F5) \750w, 8350K, 8GB LPX 3200 - 16-18-18-38, GTX 970 FTW SC, Intel SSD, 2TB RAID1, W11
Z97X-UD5H \850w, 4790K, 32GB Vengeance, RTX 2080 FTW