H100i fan question

Tiebar90 · Nov 11, 2017

Question about the fan setup on my h100i cpu cooler. I currently built a new pc and have placed the cooler at the top of the case. The fans are on the side of the radiator that are closest to the inside of the computer. The other side of the radiatior is connected to the case itself.

My question is, do I set up the fan direction to blow air from the inside of the case then through the radiator then outside the case? Or do I set up the fans to pull air from the outside of the case, through the radiator, then last through the fans? I wish there was a way to mount the fans to the top of the case because then cool air would go right through the radiator from outside.

CountMike · Nov 12, 2017

Best to let fans sit where they are and let them blow out thru radiator.

Tiebar90 · Nov 12, 2017

CountMike :

Okay because right now under gaming I get about 55-60 C.

krells · Nov 12, 2017

You can flip the fans around so they pull outside air in through the radiator and it will drop the cpu temperature a bit. It might increase you gpu temperature a degree or two depending on how good the airflow is in your case.

richiestang_78 · Nov 12, 2017

I would change it so the fans are mounted to the case, then the radiator to the fans to pull the air through simply to make cleaning the radiator easier. There is no real difference in performance either way and ease of cleaning is more important.

Tiebar90 · Nov 12, 2017

I have 3 case fans on the front blowing air into the computer and one in the rear right next to the radiator sucking air out

richiestang_78 · Nov 12, 2017

Is it under the radiator or on top? Basically its just easier to have the fan underneath pulling air through the radiator so you can vacuum/blow off the radiator fins.

https://www.youtube.com/watch?v=UyC3lZ5WFMk

Tiebar90 · Nov 12, 2017

So lunch fans are under the radiator. If you look at the picture you posted above, my fans are visible under the radiator and the radiator is attached directly to the case on top, nothing in between besides a dust guard that came with my case.

So my fans take air from inside the case and blow it through the radiator

Tiebar90 · Nov 12, 2017

Let me try to take some pictures.

richiestang_78 · Nov 12, 2017

Gotcha, it works but dust will eventually build up in the space between the fans and radiator meaning you will have to take the fans off to clean it out.

krells · Nov 12, 2017

richiestang_78 :

This makes sense if you are exhausting air out the top of the case. I think OP is looking to pull cooler air from outside the case in through the radiator to lower cpu temperatures. In that case you would end up trapping dust between the radiator and fan like you are trying to avoid.

Tiebar90 · Nov 12, 2017

krells :

Yes I wanted cooler airflow to cool down cpu temps. My CPU is at about 55-60 C when gaming. So i was wondering if I change the configuration of my fans across my radiator if it will cool it down a lot more. Right now there is really no way to get a lot of dust on my radiator as the fans are inside the case which. then ontop of the case there is a dust guard.

Tiebar90 · Nov 12, 2017

http://i.imgur.com/ZKs1PrG.jpg

this is how my cooler is set up. the arrows on the picture show the direction of air flow. My case is also much much larger with more space. i have three large fans on the front sucking air into the case and one on the back blowing air out of the case, essentially where the one is in the picture in distance to the radiator.

richiestang_78 · Nov 12, 2017

It totally works, but dust is going to build up in the space between the fans and radiator requiring you to remove the fans to get at the dus at some point. Like I said I would put the fans on the other side of the radiator pull air through.

Tiebar90 · Nov 12, 2017

Oh so the same direction but on the other side of the radiator attached to the case instead of the radiator attached itself? Hats a good idea. Also is 55-60 C bad for the temp playing games?

richiestang_78 · Nov 12, 2017

No thats fine, when you get into the 80s start to worry and when you hit 90 something is wrong.

CountMike · Nov 13, 2017

Fans for radiator cooling are made so they have more static pressure than case fans so they can blow air thru relatively tight spacing between the fins. That advantage is lost if such fans are used in pull configuration and may be better to swap them for high flow ones.
My measurements show that radiator is much cooler than processor itself and that few degrees higher temperature of air inside the case dosn't translate to higher temps of processor.
For instance: 50c on processor on a good AIO cooler has only bout 30c at the surface of radiator. With 55c on processor there's only 31c on radiator. 60c gave only 32c on radiator. It's only when cooling capacity of AIO system is grossly underestimated that fans, their speed and their position gets into any significant play but by than it's too late and should be changed to something better.

Tiebar90 · Nov 13, 2017

CountMike :

my fans arent set up as pulling air from the radiator their setup as pushing air from inside the case through the radiator.

also after playing codww2 today for about 2-3 hours my cpu got up to about 72 C. is that okay? i imagine it is if the cpu is sucking air from the computer and the computer case air is warm because of my gpu, etc. maybe i should put the fans ontop of the computer case so their sucking in air from my room which is cooler then the air in my computer? I dont mind cleaning the top more often and i do have a pretty good dust gaurd on the top as well.

H100i fan question

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