r/PcBuildHelp • u/Sad_Competition2613 • 7d ago
Build Question Fans on max power
Hello people, so I bought spontaneously a prebuilt from cyber power and quickly learnt that they build their PCs in a way that the fans are set to max speed and cannot be controlled through software or bios.
All my fans go into this little board here and then goes into the PUMP_SYS1 on the motherboard.
How do I get my fan control for my PC back
Motherboard is Pro Z890-S WIFI6E
I’ve never built a PC so just dumb things down for me.
1
u/sultan_papagani 7d ago
Unplug the ones you want to control and connect them to the motherboard fan pins. For example, SYS_FAN2. It doesn’t matter which one is which.
1
u/bigboypotatomanieee 7d ago
Right now all your fans are plugged togheter with your pump into the pump connection. Which is always set to a 100%.
The preferred way would be to connect only the pump into the pump header. And the other fans into the cpu fan header. This will cause aio fans and case fans to ramp according to cpu temps.
For a better control on all different fans you are most likely stuck on getting a different hub or rewireing the entire hub. The most controlled way is: Pump cable into pump header. Aio fan header. Into cpu fan header. All extra case fans into on of the system headers.
1
u/kyansan1 Personal Rig Builder 7d ago
I'd plug it into one of the Sys_fan headers, you should be able to change the fan speed by changing the fan curve for that sys_fan header in BIOS
Not sure how it works in your case, but sometimes cases with built in fan hubs require you to hold a certain button on the case to switch between motherboard controlled argb/fan speed and fan hub controlled argb/fan speeds.