Case fans loud

[serij1805]

My pc case fans are bit loud.
I have azza inferno 310
The fans have 3 pin connectors and are connected to my mb 4 pin conectors
The mb is asrock b250 pro4
In uefi i see they are running 1700 rpm regardles of me cganging to silent mode or not.
But a lot of reviews on the case say that they are pritty silent. What could be the problem?

 

[Dark Lord of Tech]

3 pin fans can't be controlled.

They will run at FULL RPM. 🙁

 

[Paperdoc]

The manual for you mobo shows that the CHA_FAN1 and 2 headers use only PWM Mode. This Mode can NOT control the speed of any 3-pin fan - such a connection will result in the fan running at full speed all the time.

The Manual does show that the CHA_FAN3 header can be configured in BIOS Setup to use either PWM Mode or DC Mode (see p. 73). DC Mode CAN control the speed of 3-pin fans. However, then we need to deal with how many fans, and how to connect. Most fan headers have a limit of 1.0 amps total load for all the fan connected to that one header. So, tell us how many of these 3-pin fans you have. The AZZA Inferno 310 website indicates it includes TWO of their Hurricane RGB Lite fans, so is that all you have for the case vent function? The site does NOT provide a spec for the current consumed by these fans. However, they are constructed with separate sets of leads for the fan motor and the LED's. Most such fans consume less than 0.25 A for the motor function only (not including the LED's being fed from another source), so you CAN use a SPLITTER to connect two of these fans together to the one CHA_FAN3 header. A Splitter looks like this:

https://www.newegg.com/Product/Product.aspx?Item=N82E16812423161&cm_re=coboc_fan_splitter-_-12-423-161-_-Product

That is a 4-pin Splitter, but it works just fine with 3-pin fans. Note that it has two arm types. One arm has a female (with holes) connector to plug into the mobo CHA_FAN3 header. The other two arms both have male (with pins) connectors for you to plug your fans motor connectors into. There are no other types or arms. Do NOT get a Hub. That is a different device, and some of them look a lot like splitters with just several arms. But a Hub has a third type of arm that plugs into a power output from the PSU. A Hub can only work with 4-pin fans, so do not get one of those for your 3-pin situation.

 

[Paperdoc]

Thanks for Best Solution.