Watercooling on CPU Fan or SYS FAN PUMP

So the pump is connected to SYS PUMP and the radiator fans to CPU FAN, that's how I've connected them currently, and I have a resting temperature of about 25-26 degrees (I haven't tested with heavy games yet). It should work even with the radiator fans set to intake while keeping the large fan, or do I absolutely need to change the direction of the radiator fans and set them to exhaust? Since the temperature (without having tested under load with heavy games) is a constant 25-26 degrees. And if I change the fans' direction, can I still keep the large fan without it causing issues, except that it becomes unnecessary? Because if I remove it, I have a big hole in the front which looks ugly and no more RGB ))

However, I've noticed something that worries me a bit; when I use the software specific to this water cooling (Armoury Crate) and I activate the "silent" option (instead of standard) in the fan settings, suddenly I hear little crackling noises that seem to come from the CPU fan (I feel like I hear this noise inside the case near the LCD screen on the CPU). I thought it was due to the pipes or some air being pulled in, but I believe it comes from the CPU fan itself, and when I set my fans (still using the software) to ultra, well they spin at full speed with a crazy noise from the radiator fans but that must be normal when they run at full capacity (around 4500-5000 RPM).

I'm wondering if I placed the water cooling pipes badly or rather the radiator that I installed in the only direction I could on the front (no other possible location in this case), and if I reverse the direction so that the water cooling pump pipes come from the bottom and go up towards the CPU, well the case won’t allow it due to the thickness of the pipes being blocked by the case chassis, and I understand that on the front, it’s better if the pipe cables go down to rise to the CPU).

Or maybe I should disassemble the CPU cooler and turn it completely upside down (so I’d have the screen inverted lol) so that the pipes leading to the CPU are just above the CPU?

I'm worried about this annoying noise whenever I set it to silent mode..

Thanks anyway!

I also got this feedback (yes I know I'm abusing and letting myself be swayed in every direction lol but I prefer to have multiple opinions to be sure, even if it might not be the best option I admit lol):

"Armoury Crate often causes issues (in the Asus forums it is called 'the wart')

Why not adjust everything related to the fan in the BIOS settings?
Normally, it should be possible

Anyway, you have no other choice but to reverse the direction of your big front fan (it might be the airflow conflict that is causing the 'noise')

There you go...

For the connections on the motherboard, I was also told this in the end:

"I understood the SYS_FAN_PUMP system... ok, actually... better to connect the pump to CPU_OPT (as usual), otherwise you have to go into the BIOS and change SYS_FAN_4_PUMP from slope to stair...

basically, sys_pump can do both... but is originally set up for a fan control lambda"

I'm confused...

Hello,

the location where they are connected doesn't matter much, theoretically the pump goes to the opt, but the other sockets can work too and indeed, according to the manual, you need to configure the sys_fan in pump mode in the BIOS. As long as your temperatures are good (to be checked under stress), don’t worry too much about it.

For the speed of the watercooling fans, connected to the cpu-fan you should have the option to configure a curve in the BIOS (I don’t know if this is possible on all BIOS).

For the fan placement, you have 1 large fan in the front + watercooling drawing air from the front, and the rear and top fans exhaust? If so, that’s good.

For noise issues and the placement of the watercooling, I invite you to watch this video (in English), it’s very well explained: https://www.youtube.com/watch?v=BbGomv195sk

Thank you very much for this feedback

I conducted these tests for the pump and radiator fan connection with this data, let me know what you think, the best configuration and what I should change, if you see anything to gather from it? Thank you very much (For the AIO pipe mounting cables, fan direction radiator, I will leave it like this from now on, I don’t have much choice anymore )

Fan connection configuration 1: (data taken from the BIOS)

-Pump on opt: Fluctuates between 1285 to 1450 RPM

OPT CPU fan speed control: silent

Fan control uses temperature input: CPU

Temperature interval: 3

CPU OPT FAN CONTROL MODE: Auto

CPU OPT STOP: Disabled

CPU OPT MODE: slope

-Radiator fan; fluctuates between 640 to 690 RPM

CPU FAN speed control: silent

Fan control uses temperature input: CPU

Temperature interval: 3

CPU FAN CONTROL MODE: Auto

CPU FAN STOP: Disabled

CPU FAN MODE: slope

In this configuration, with the Armoury Crate software, in mode:

-Silent: the little click noise is clearly audible and the RPM drops to 0
-Standard: (no more little click noise) RPM 840,
-Turbo (no more click noise and no excessive noise from the fans, nothing more than in standard mode) RPM 1440-1470,
-Full speed RPM 4950-5010 (no more little click noise but the fans are running at full blast with intense noise, especially the CPU fan)

CPU temperature in this configuration both in the BIOS and on the desktop (at rest) between 26-27 degrees

Fan connection configuration 2:

-Pump on SYS FAN 6 PUMP: RPM fluctuates between 1320 and 1340

Speed control for the 6TH SYS pump fan: silent

Fan control uses temperature input: CPU

Temperature interval: 1

SYS FAN 6 pump control mode: PWM

SYS FAN 6 pump stop: disabled

SYS FAN 6 pump mode: slope

SYS FAN 6 pump fail warning: disabled (the fail warning is disabled everywhere regardless of the configuration)

-Radiator fan on CPU FAN: RPM fluctuates between 666 and 674

CPU FAN speed control: silent

Fan control uses temperature input: CPU

Temperature interval: 3

CPU FAN CONTROL MODE: Auto

CPU FAN STOP: Disabled

CPU FAN MODE: slope

In this configuration, with the Armoury Crate software, in mode:
-Silent: the click noise of the CPU fan is clearly audible and the RPM drops to 0
-Standard no more click noise from the CPU fan) RPM 840
-Turbo mode no more click noise) RPM 1440-1470 and no excessive noise from the fans, about the same as in standard
-Full speed: RPM 4950-5010 (no more little click noise but the fans are running at full blast with intense noise, especially the CPU fan)

CPU temperature in this configuration both in the BIOS and on the desktop (at rest) between 28-29 degrees

There you go

I also received this feedback:

"I understood the SYS_FAN_PUMP system... okay, actually... no, it’s better to connect the pump to CPU_OPT (as usual), otherwise you have to go into the BIOS and change SYS_FAN_4_PUMP from slope to stair... basically, sys_pump can do both... but is originally set to a standard fan control."

I don't know what slope or stair are, the person seemed to say that it should be set to stair if I connect it to CPU_OPT, but I don't know what it's for and if I should also change it on SYS PUMP and CPU FAN, because as described in my feedback, everything in my BIOS is set to "slope".

or this:

"you need to have the pump connected to one of the SYS_FAN_PUMP sockets with a profile that prevents it from dropping below 70%. The AIO fans connected to the CPU_FAN socket with the profile you want. The case fans connected wherever you want except CPU_OPT with the profiles you want. And if you can, change the case or the AIO; they are not really compatible with each other."

If that's the case, I have no idea how to do it in the BIOS depending on whether I plugged the pump into SYS PUMP or CPU OPT. Is it only the pump connection that I need to set to 70-80% or those of the three radiator fans on CPU FAN? And if yes, how exactly do I do that? Won't setting it to 70-80% all the time make the fans run too fast? Is that the idea?