Connect radiator fans to PSU?

[zettez]

I have a Corsair Hydro H110 water cooler, a Corsair 900D chassi, a ASUS Rampage IV Black Edition motherboard and a Corsair ax1200i PSU. I also have 9 fans (7 chassi and 2 radiator).

My motherboard only has 8 headers for fans, so I plugged 7 (chassi) of my fans into the PSU and left my other 2 (radiator) in OPT_FAN1 and OPT_FAN3. I plugged my water cooler into CPU_FAN. I choose not to put a radiator fan in CPU_OPT because I want consistency between my radiator fans, I do not want one to go slower than the other one.

Should I put my radiator fans into my PSU instead of my motherboard?

 

[rolli59]

If you do that they will run full speed all the time which is fine if they are not high rpm fans.

 

[zettez]

If you do that they will run full speed all the time which is fine if they are not high rpm fans.

Thanks for the answer. I use AF140mm as chassi fans and the radiator fans are the ones that came with my H110.

Is it recommended to run everything through my PSU instead?

 

[rolli59]

Through the PSU everything will run full speed, through the board it is speed controlled which is preferred by most. I personally think putting the radiator fans on the PSU is fine but leave the rest as is.

 

[zettez]

Through the PSU everything will run full speed, through the board it is speed controlled which is preferred by most. I personally think putting the radiator fans on the PSU is fine but leave the rest as is.

Would there be any damage to my system if I ran everything from the PSU? I do not mind the noise. I was thinking mostly about my water cooler, will the pump be ok to run at 100%? And is there any problem if my system gets "too cold"?

 

[rolli59]

I would run the pump of the CPU fan for speed control and thermal management, plus you would get a warning that no cooler is installed and possibly issues.

 

[zettez]

I would run the pump of the CPU fan for speed control and thermal management, plus you would get a warning that no cooler is installed and possibly issues.

I heard the pump should be at 100% constant speed and the fans are what should be controlled. Is this true?

 

[rolli59]

Being a 3 wire connections it should run full speed anyway but one of them has to be on the cpu fan header.

 

[zettez]

Being a 3 wire connections it should run full speed anyway but one of them has to be on the cpu fan header.

Thanks, what about this setup:

CPU_FAN = first radiator fan.
CPU_OPT = second radiator fan.
PSU = all other fans + radiator pump?

 

[rolli59]

It will work!