AIO connection

[totti100]

Hi,

 

I bought AIO cooler Cooler Master Masterliquid Illusion 240. It is my first AIO. My MB is B450 Mortar max, and my CPU is Ryzen 5 5600.

I do not have pump header on my MB. Should i connect AIO pump to CPU Fan header or SYS Fan? There is confusion about this as i find different answers. Some people say to use CPU Fan header for the pump and SYS Fan for radiator fans because CPU Fan header is "safer" for the pump. Others say to use SYS Fan header for the pump, and CPU Fan header for radiator fans because in that case, radiator fans will spin depending on CPU temp, and pump will work at 100%. What option should i pick?

 

Also, what should i pick in my BIOS..... PWM,DC OR Auto? Should i do anything else in BIOS to optimize my AIO?

 

Thank you 

[Tegneren]

I believe you can set each of the headers to be regulated by the CPU temp, or something else, in BIOS. So I dont think it actually matters for your motherboard, they all provide the same current an regulation, its just the placement that decides what they are named.

Use PWM for both, unless the fans only has 3 pin plugs, in that case use DC mode for the fans.

You can choose to adjust the fan curve in BIOS. Your CPU dont get that hot so I would set it to run a bit slower than stock just to reduce noise

 

[alyen]

The reason why people often suggest the CPU fan for the pump is that it may only be the standard fan header that can warn you when the fan fails.

 

I always have HWInfo running and have the CPU temperature in the windows bar and might use Sysfan header or one header that leaves the fan/pump running at 100% since AIO pumps are intended to be ran at full speed.  Most newer motherboards these days seem to have fan control for all headers, but some lower end boards may not.

[totti100]

Ok, i connected my AIO pump to SYS Fan, and radiator fans to CPU Fan.

In BIOS i put it on auto and smart fan for the pump and fans. Should i put pump to PWM so it can work on 100% all the time? Is that ok for pump lifespan?

 

CPU temps are jumping from 28c to 36-37, and they get back again. It can jump sometimes to 40c for sec or two and they are back again fast on low 30s. Most of the time they are around 31-32c, but i hate those jumps. Is that normal? I had Arctic Esports duo and temps were 32-33c stable on idle most if the time. In games my AIO goes from 43-50c, and in cinebench 55c. It does not go over that.

 

Are those temps and jumps ok for ryzen 5 5600? And would new MB with pump fan header improve performance or make it stable without those temp jumps?