curious fan placement question - water cooling

[ViviTheMage]

current fan placement :

2 on TOP of the top rad pulling upwards
1 in the front, pushing from outside in
PSU one pushing from inside out (no other way)

I want to add a rear one that I would assume pushes air from the inside out? Or should I do it outside in?

Should I change my top fans as well? Or no?

 

[Wanescotting]

Yes, change the top fans. Much better to bring in air from outside the case to cool those rads, as the air inside the case is hot. I would leave the other fans as-is this should give you a positive air pressure, which will lead to less dust build up.

 

[Schmide]

I want to add a rear one that I would assume pushes air from the inside out? Or should I do it outside in?

The common practice was in front, bottom, left and out back, right, top. However it has been show in many cases (double meaning), that reversing the top back fan to push air in, in a water cooling system with a rad at the top, lead to better temperatures.

 

[Schmide]

Yes, change the top fans. Much better to bring in air from outside the case to cool those rads, as the air inside the case is hot. I would leave the other fans as-is this should give you a positive air pressure, which will lead to less dust build up.

I vote against this BTW. Proper cooling in a case with radiators is based on air pressure and movement not air source.

 

[ViviTheMage]

The common practice was in front, bottom, left and out back, right, top. However it has been show in many cases (double meaning), that reversing the top back fan to push air in, in a water cooling system with a rad at the top, lead to better temperatures.

I am thinking of the air way than ... I'll switch the tops to push in. Should I have the rear fan blow in, or out?

I am going to add another fan up front to pull air in from the front more.

 

[Wanescotting]

I vote against this BTW. Proper cooling in a case with radiators is based on air pressure and movement not air source.

Well, everyone has their own way, certainly couldn't hurt to try each method and see what works for you I have top and bottom rads, so I bring air from the outside in, I found it to yield better results.

 

[Elganja]

my current setup:

 

[ViviTheMage]

That is pretty much what I have, plus a front fan. I am surprised back fan is going in though. Have you tried flipping it?

 

[Elganja]

That is pretty much what I have, plus a front fan. I am surprised back fan is going in though. Have you tried flipping it?

I have not, but I had been considering it.

 

[Lightflash]

It should not really make a huge difference turning the fan the opposite way. It might actually help temps to pull in air from the back since there is no other heat exhaust. But it would be nice to see if there is any change going from one to the other.