Originally posted by: The Boston Dangler
positive air pressure in a pc case will keep the insides very clean and cool, if there's a decent filter on the intake.
I've never understood the whole "positive air pressure" in the pc case thing and it helping anything.
To have positive air pressure, you're blowing more air in than is being exhausted, right?
So where's the air coming from in the first place? Outside the case, right? So, in essence, you're still blowing cat fur laden air into the case and I don't see how that solves anything.....the air is probably causing more problems that way, anyway.
Since you're bring more in than is exiting, the fur entering is just being trapped inside and floating around adhering to anything and everything inside instead of moving through quickly and being taken out quickly.
So, how does positive pressure work anyway? And really, how much positive pressure can you really build up in a pc case, with all its openings....like around your fans, optical drives, etc......and with normal pc fans (not talking insane fans like a San Ace 110 cfm fan or the like.)
Because, to me at least, it seems more logical to me to want either a balanced in/out flow. From what I have noticed about pc fans, like S-Flex, Zalman F3's, and the like, the more pressure they have to work against, and in this case positive air pressure, the less air they actually move. I know it's a rare fan that can maintain good air flow against resistance like a watercooling radiator, even an open one like a Thermochill.