PSU orientation

[Korben]

Hi,

I have a question regarding the orientation of the PSU in my current in-progress-build. First the components:

Case: H210 (miniITX)

MB: not finally decided yet, but B550 chipset

CPU: Ryzen 3 3300X

GPU: Gigabyte GeForce RTX 2060 SUPER Windforce OC

PSU: Seasonic Platinum 400W Fanless (!)

 

Since the PSU is fanless, I'm currently tending to put the PSU with ventilalion holes upside, so the GPU can "breathe" through the PSU. But, again since the PSU is fanless, the GPU might breath hot/warm air from the PSU so maybe it is better to put the ventalation holes downside? And if downside, it is better to remove the dust filter? Since there is no fan: "less" dust but better breathing?

I am not sure. 

 

Advice appreciated

 

(PS: the PSU is a leftover from an old NAS build, a new PSU is not really planned currently. I could use the one from my current rig, but that seemed kind of ridiculous to me since it's way overpowered for this build. And the cable management would be a tough one).

[Mateyyy]

I'd put it fan side (well, the side where the fan would normally be) down, just so there's 0 dust going into it.

[Korben]

8 minutes ago, Mateyyy said:

I'd put it fan side (well, the side where the fan would normally be) down, just so there's 0 dust going into it.

Hm, interesting perspective. So you mean the dust collected, say from the back of PSU, would fall down and not pile up inside the PSU? Nice thinking, thx! 

[Mateyyy]

4 minutes ago, Korben said:

Hm, interesting perspective. So you mean the dust collected, say from the back of PSU, would fall down and not pile up inside the PSU? Nice thinking, thx! 

Well if it's fan side down, unless you have something like a fan in the rear that blows air towards the PC or something and incidentally also towards the PSU, there's really not going to be any dust going inside it.  

If it's fan side up, assuming your PSU has a very open grill as most fanless units do, all the dust inside the case will most likely set down inside the PSU. Also, the graphics card's fans won't really help at all imo, they're just going to be taking away any incidental airflow around the PSU area.

[Fuzzyy]

Let the PSU have its own environment and remove the dust filter, it will be fine. Otherwise when your system is under load, your PSU will be introducing heat into the system and the GPU will get hotter if it sucks the hot air coming from your PSU. I would go with 2 intake + 2 exhaust for your case.