AIO without enough headers

[Yirith]

My brother's friend bought some components and I just assembled the PC.

 

The problem is that there is no another CPU OPT header, just the CPU FAN one and I connected the radiator fans with splitter included in the AIO box to that header. The schematics say that the block should be connected to the CPU OPT header but I've connected it to the SYS FAN header and set it to be CPU controlled in the BIOS.

 

The radiator fans are randomly ramping up but the CPU temps are about 35°C

 

What can I do to prevent this?

 

The AIO is Deepcool LE500 and motherboard is Aorus B550 Elite

[_ben--]

Connect the block/pump to the CPU header, and the fans to to the System fan header. Set the CPU fan header to be at full speed and the SYSFan to perform as usual, Auto is fine. This should ensure your pump works without hitches and should stop your rad fans from ramping up unnecessarily. I did this on my old system that didn't have proper connectors for AIOs following some old thread as well and it worked nice and quiet, temps were great.

[Robchil]

11 minutes ago, Yirith said:

My brother's friend bought some components and I just assembled the PC.

 

The problem is that there is no another CPU OPT header, just the CPU FAN one and I connected the radiator fans with splitter included in the AIO box to that header. The schematics say that the block should be connected to the CPU OPT header but I've connected it to the SYS FAN header and set it to be CPU controlled in the BIOS.

 

The radiator fans are randomly ramping up but the CPU temps are about 35°C

 

What can I do to prevent this?

 

The AIO is Deepcool LE500 and motherboard is Aorus B550 Elite

usually for watercooled systems i would recommend connecting nothing on the CPU fan header as it is locked to use CPU temp as control method for fan speed. 

Connect the AIO in the AIO fan header, and the fans in chassis 1 header or what else are available. then it's possible with aorus/gigabyte software to adjust better fan curves. 

 

you might have to disable monitoring on the CPU fan header in bios to avoid a warning at every boot. 

and if i where you i would consider a fan controller to connect all fans to, and one pwm cable to the mainboard. 

 

[Yirith]

I tried ben's solution and for now the ramping up is not occuring so it's fine. I'll tune the fan settings in BIOS if the temps are about to go wild.

 

Cheers guys!