[SOLVED] How to lower Fans RPM

[iirtaza25]

So I recently installed a corsair h100i AIO cooler, upon doing this i noticed my PC got noticeably louder, through the use of some application I found out that my PC fans were spinning at around 3,800-4,000 RPM which is crazy high, I've monitored my temps and everything is normal, played games and my CPU temp would hover around 45-50 degrees celcius, put my hand around the pc and its all cool air so i dont think its an overheating issue, however Ive noticed that my CPU (which is an AMD Ryzen 5 3600) is now clocking at speeds of around 4.10 Ghz which it never did in the first place, I would like to solve this Issue ASAP to avoid any long term damage to my hardware

 

[Deleted member 362816]

It's clocking higher because the temps are lower and it has boost headroom. That is not going to hurt your hardware. As for the fans being at 100% if they are plugged directly into the motherboard just go into bios and set a manual fan curve that you can tolerate for noise.

 

[iirtaza25]

It's clocking higher because the temps are lower and it has boost headroom. That is not going to hurt your hardware. As for the fans being at 100% if they are plugged directly into the motherboard just go into bios and set a manual fan curve that you can tolerate for noise.

I tried messing with the BIOS for the fan speeds but no success, I have another theory though, I plugged the pump cable into a CPU fan header but I noticed on my motherboard I have a Chassis/Water Pump Fan Connector do you think plugging it into there might fix the issue?

 

[Paperdoc]

Have you made connections as specified in the H100i manual?

1. One cable from the PUMP has a wide connector that must plug into a SATA power output from the PSU. Its smaller connector must plug into the mobo CPU_FAN header. That latter just feeds the PUMP speed to the CPU_FAN header for monitoring. If you try to look at the "CPU Fan Speed" in BIOS Setup, it will show there the PUMP speed!
2. One cable is to connect between a socket on the Pump to a USB2 header on your mobo. THIS is the means for the iCUE software utility to communicate with the H100i system AND do its control jobs.
3. The system comes with a SPLITTER that you must use to connect both RAD FANS to a socket on the Pump. THIS is how those fans are fed power AND have their speed controlled. To "see" the speed of those fans you MUST look in iCUE -their speeds are NOT available anywhere in BIOS Setup if you connect this way.
4. Have you installed iCUE and keep it running? THAT is how the H100i system can control the cooling of your CPU by controlling the speed of the RAD FANS connected to the PUMP. iCUE must be running AND it requires that connecting cable from pump to USB2 header.

If you have made different connections, you will get odd results until you adjust them to something that Corsair did not specify.

 

[iirtaza25]

Have you made connections as specified in the H100i manual?

1. One cable from the PUMP has a wide connector that must plug into a SATA power output from the PSU. Its smaller connector must plug into the mobo CPU_FAN header. That latter just feeds the PUMP speed to the CPU_FAN header for monitoring. If you try to look at the "CPU Fan Speed" in BIOS Setup, it will show there the PUMP speed!
2. One cable is to connect between a socket on the Pump to a USB2 header on your mobo. THIS is the means for the iCUE software utility to communicate with the H100i system AND do its control jobs.
3. The system comes with a SPLITTER that you must use to connect both RAD FANS to a socket on the Pump. THIS is how those fans are fed power AND have their speed controlled. To "see" the speed of those fans you MUST look in iCUE -their speeds are NOT available anywhere in BIOS Setup if you connect this way.
4. Have you installed iCUE and keep it running? THAT is how the H100i system can control the cooling of your CPU by controlling the speed of the RAD FANS connected to the PUMP. iCUE must be running AND it requires that connecting cable from pump to USB2 header.

If you have made different connections, you will get odd results until you adjust them to something that Corsair did not specify.

yep! have done all that and correctly connected the cables, its not the AIO cooler that im worried about its the case fans, they are loud, spinning at 3800+ RPM and I have no idea why, done a bunch of things do diagnose it but no luck

 

[JohnBonhamsGhost]

im worried about its the case fans, they are loud, spinning at 3800+ RPM

if your case fans are PWM and connected to the motherboard;
use the motherboard manufacturer's utility designed for controlling fan speed curves and such,
create a custom profile with lower RPMs.

 

[Paperdoc]

Ah, I had assumed since you r post related the problem to recent installation of the H100i system, that the noise was with those fans. Bit not so.

Check these and post back info.

1. What mobo - maker and exact model or name.
2. What fans for the case - how many of each make and model.
3. Where are those fans plugged in? Label of mobo header or if connected directly to a Molex power output of the PSU.
4. Look at fan wires. Does each have THREE wires ending in a connector with 3 holes? Or, 4 wires and holes?

I do not use iCUE. But from reading its manual, it is clear that iCUE is intended to take over control of ALL your fans that are connected to mobo headers. When you install it, you must configure it for EACH fan, then adjust the settings for each. I expect that really iCUE somply is giving you an easier tool for fan control than simple BIOS Setup screens, but using the mobo control system. So iCUE probably changed all your old mobo fan header settings to its own default new settings, and now you need to use iCUE (not BIOS Setup) to re-adjust all those. With the info above, we can offer more targeted advice.