Is it better to have a fan blowing on the pi or blowing out?

Xeon

Most people do, but you don't hear me gassing on about it.

"sorry could not resist"

ortsac

@redbatman First of all, you ask for everyone's opinion, and we have given it truthfully. Now that I see the case that you have, it has plenty of holes on the side that can either disperse the hot air out or draw the cool air in, and therefore the preference is yours not ours. It is now a matter of whether you would want for the fan to blow dust into the heatsink or draw it from the vents.
Personally, I do not even use a fan or a case on my setup. The RPi is good without it. The fan will just present itself as another load on the power supply, and in the long run will just present itself as a mechanical failure. Also, an enclosure is just too constrictive.

cyperghost

@ortsac
Good choice
I also prefer the bare PI and if I'm using housings then kinda that.

edmaul69

@cyperghost couldnt decide on one flavor of pi? 😄

RedBatman

I thank everyone for their replies.

cyperghost

@edmaul69 Well as are here some discussions that the future PI might be a bit faster (more CPU power, more GPU RAM....) this is the best soulution for now.
[IRONIC OFF]

This is just a picture from a store... Wasn't able to find one with only two layer :)
But these kind of cases works very well - don't look very ugly and provide good cooling.

Indeed I have one PI B rev1 still in use ... it's a little heatball.

RetroFreak89

Blowing on the Pi gave me best results

Xeon

@retrofreak89
It will. because the flow is aimed directly at the cpu sink.
This is why i said it depends on the flow thru the case.

RetroFreak89

@xeon my case has holes at the bottom so it blows onto the arm CPU then the air goes underneath and out the case

Xeon

@retrofreak89 said in Is it better to have a fan blowing on the pi or blowing out?:

@xeon my case has holes at the bottom so it blows onto the arm CPU then the air goes underneath and out the case

When it sucks the flow is spread over a large area.
When it blows the flow is aimed directly at the cpu.
So a larger amount of air hits and pushes away heat when blowing directly on the cpu.

However blowing increases dust build up and sucking decreases it.

Choose wisely.