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Fan control question

S

Secretweapon

Weaksauce
Joined
Sep 24, 2004
Messages
117
I have a question on using the RPM / Fan control with ASUS Fan Xpert 4.

Current setup:

6 x Corsair LL Whites (Planned Radiator fans) - (2200rpm max)
4x EZ-DIY moonlight Whites (Case fans) - (1600rpm max)
All 10 fans are hooked up to a FH10 Deepcool 10 port Fan hub on CPU FAN header on ASUS DH.

As far as i know only fan 1 port is detected by MB and the Fan Xpert software (which is occupied a corsair fan) If I raise the fan speed to say 1800rpm, the corsair fans will all match. What I'm not sure on is how the EZ-DIY fans will react, will they just raise to that rpm(yikes?) Or a percentage of the 1600rpm max? I don't want to damage them with the higher rpm settings.

The EZ-DIY ARGB hub also has 5 PWM fan ports (Connected to one of the MB chassis fan ports) that I could just swap the 4 fans back to.
 
The motherboard will send a PWM signal to the computer fans and they will run at the corresponding frequency. So if your motherboard is putting out 30% the Corsair fans and EZ-DIY will both be running at approximately 30% of their max RPM.
The fan curve is not necessarily linear so if you have a 2000 rpm fan and you run it at 25% it does not necessarily mean it will be spinning at 500 rpm, but it should be pretty close. An example of one of the fan curves from Fan Xpert 4 is below.
Since you are mixing two different fans that may have different stall speeds you will want to make sure that you don't set the lowest PWM/rpm speed to where the non-sensored fans do not spin since being stalled can cause them to overheat and damage them.
1614564301047.png
 
Thanks! They won't be going anywhere lowest speed until I get my WC loop in. Maybe I'll switch over then.

Fan splitter would mean potentially more cables in the front, I think 4 of these fans is getting dangerously close to the 1A header limit.
 
I agree, 4x fans might be too much on single fan header. A fan rated 0.20A can and do draw 3-6 times that 0.6-1.2A) at startup or if something stops impeller from turning.
 
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