sucks or blows, which is better?

[ToolPackinMama]

Yeah, the thing mounts via 4 holes in the motherboard around the socket;
not a 'spring clip'.

Technically those holes are supposed to be there but with it being so
common to use spring clips some, perhaps most, motherboard manufacturers
don't put them in because it gives a little more flexibility when routing
the circuit traces if the holes aren't in the way.

So... there is no way I would start drilling holes in my motherboard.
No way.

 

[ToolPackinMama]

It is obvious that, about this subject, there are at least two
different schools of thought

Yes, the blow school and the suck school.

 

[ToolPackinMama]

Yeah, but explaining fan performance isn't really a "school of thought."
Case static pressure prevents rear exhaust fans from reaching even close
to their published CFM. Adding a front fan decreases static pressure,
and increases rear fan CFM. Fact.

I notice you didn't say anything about a side fan. I have a side panel
fan in my case, that sucks air out of the case and blows it into my
room. It's sort of a side-fan, sucks/blows kind of a thing.

 

[Gianmaria Fontana di Sacculmino]

Yeah, but explaining fan performance isn't really a "school of thought."
Case static pressure prevents rear exhaust fans from reaching even close
to their published CFM. Adding a front fan decreases static pressure,
and increases rear fan CFM. Fact.

AMD doesn't agree with this fact.

 

[JAD]

Um I think he means the MB mount plate of the case needs holes
drilled in it.

 

[ToolPackinMama]

Um I think he means the MB mount plate of the case needs holes
drilled in it.

Then why'd he say:

 

[DaveW]

The CORRECT way to orient case fans is for fans in the front of the case to
suck in and for fans in the rear of the case to blow out.

 

[Al Smith]

I notice you didn't say anything about a side fan. I have a side panel

fan in my case, that sucks air out of the case and blows it into my
room. It's sort of a side-fan, sucks/blows kind of a thing.

Technically, your side fan sucks. Turn it around, and then it
would blow.

 

[ToolPackinMama]

Technically, your side fan sucks.

IMHO that's good.

 

[David Maynard]

Gianmaria Fontana di Sacculmino wrote:




Yeah, but explaining fan performance isn't really a "school of thought."
Case static pressure prevents rear exhaust fans from reaching even close
to their published CFM. Adding a front fan decreases static pressure,
and increases rear fan CFM. Fact.

Well, it's only a 'fact' if the case is sufficiently air tight every place
else so that the two fans are coupled.

 

[David Maynard]

So... there is no way I would start drilling holes in my motherboard.
No way.

Well, you COULD. It wouldn't work afterwards but you'd have holes in it <g>.

 

[David Maynard]

Technically, your side fan sucks. Turn it around, and then it would blow.

It depends on whether you're the suck-er or the suck-ee.

 

[David Maynard]

Um I think he means the MB mount plate of the case needs holes
drilled in it.

At that point I was talking about the motherboard.

Frankly, not having one, I don't know if its mounting goes on through to
the mounting plate or not but, regardless, it's got to get through the mobo
first and if the holes ain't there it matters not what the mounting plate's
got.

I.E. One skilled with a punch and drill could probably 'fix' a lack of
holes in the mounting plate but you're SOL if the mobo doesn't have them.

 

[ToolPackinMama]

I.E. One skilled with a punch and drill could probably 'fix' a lack of
holes in the mounting plate but you're SOL if the mobo doesn't have them.

Well, no, cos you could always use the stock heatsink/fan, which IMHO is
perfectly fine.

 

[ToolPackinMama]

It depends on whether you're the suck-er or the suck-ee.

It's, like, all relative n stuff.

 

[David Maynard]

David Maynard wrote:




Well, no, cos you could always use the stock heatsink/fan, which IMHO is
perfectly fine.

Surely.

I meant SOL with respect to using the silent tower.

 

[David Maynard]

It's, like, all relative n stuff.

Yeah. Relatives can be like that some times =:O)

 

[ric]

AMD doesn't agree with this fact.

Really? They claim on their site that a rear fan performs in a case, with
greater than zero static pressure, the same as they perform at zero static
pressure? No, they don't claim this.

Do they claim that a front fan doesn't reduce the static pressure seen
by the rear fan? No, they don't claim this either.

*Exactly* what do they claim (and where do they claim it?)

 

[ric]

Well, it's only a 'fact' if the case is sufficiently air tight every place
else so that the two fans are coupled.

Huh? The case need not be even close to air tight for a front fan to
increase CFM in a rear fan. Measure rear fan CFM as you switch a front
fan ON and OFF. The results are quite dramatic.

I guess "coupled" is a relative thing.

 

[David Maynard]

David Maynard wrote:




Huh? The case need not be even close to air tight for a front fan to
increase CFM in a rear fan.

All I said was 'sufficiently'.

Measure rear fan CFM as you switch a front
fan ON and OFF. The results are quite dramatic.

It depends on the case and it will have no effect at all on what I like to
humorously call the 'swiss cheese' models.

I guess "coupled" is a relative thing.

Of course.

If there is no other resort then it can help, if the case isn't punched
full of holes everywhere, but it isn't necessarily the best place to look
for improvement if one cares about noise.