CPU Cooler Fan up or down?

[Feinberg]

So i bought a Cooler Master Hyper TX3 Evo and now i ask my self if the fan should point up or down.

If it points down, the Air will be pressed against the Backplate of my GTX 660.

If it points up the Air will head towards the Top of the Case. 

This the Hyper TX3

 

This is my Case in its current state.

 

[Nacho Marco Segui]

The fan should exhaust to the rear of the case

[PooPipeBoy]

Hot air rises, so if your case has an air vent on the top it can sometimes be beneficial to exhaust the hot air straight out the top.

Otherwise just send it rearward and the rear fan can pull the hot air out the back.

[MeltingPoint]

Rotate the cooler so that the fan blows air to the rear exhaust fan.

 

 

56 minutes ago, PooPipeBoy said:

Hot air rises, so if your case has an air vent on the top it can sometimes be beneficial to exhaust the hot air straight out the top.

Otherwise just send it rearward and the rear fan can pull the hot air out the back.

"Hot air rises cold air sinks" is not that important in cases because it is a small space and there is forced ventilation.

[LogicalDrm]

Coolers fan should blow air towards exhaust fan/s. Since you have rear exhaust, it should be blowing towards it.

3 hours ago, PooPipeBoy said:

Hot air rises, so if your case has an air vent on the top it can sometimes be beneficial to exhaust the hot air straight out the top.

Otherwise just send it rearward and the rear fan can pull the hot air out the back.

Like said above, that fact is irrelevant within case. Its more important to make airflow fluid. If one has rear exhaust, CPU cooler should blow towards it. If one has top exhaust, like me, then CPU cooler should blow towards them.

 

"Hot air rises" is more important when case is placed in closed space or under table. There air above case is much hotter than air closer to floor.

[Allshevski]

To the side. As an exhaust. Hot air rising has nothing to with the temperatures as it is barely measurable in PC cases.

[Kc7vwc]

On 3/26/2016 at 4:13 AM, Feinberg said:

So i bought a Cooler Master Hyper TX3 Evo and now i ask my self if the fan should point up or down.

If it points down, the Air will be pressed against the Backplate of my GTX 660.

If it points up the Air will head towards the Top of the Case. 

This the Hyper TX3

 

This is my Case in its current state.

 

I have done both orientations. Keep airflow in a straight line. Period. 

Almost 10℃ difference cooler under load when I had it blowing front to back, vs blowing up.

My case is a Cooler Master N200.