Quote from: NotFuzzyWarm on June 05, 2015, 10:49:39 PM

Quote from: Evan on June 05, 2015, 09:25:03 PM

Quote from: Geiger on June 05, 2015, 08:24:25 PM

Quote from: Evan on June 05, 2015, 04:41:14 PM

Max be 239CFM That's very close to my Big boy deltas I use to cool my radiator for my OC i7 3930k~ 4.7ghz.....
Whats the Air Pressure? My delta at 252CFM is: 1.412 IN H2O 35.877 mmH2O

What do you mean by "1.412 IN H2O 35.877 mmH2O". I'm sure you make sense. It's just that I know the lingo.

1.412 Iches of H2O
Or
35.877 milmeters H2O

Often called a 'head' of water

It is the pressure required to support a water column of the specified height. It is equivalent to 9.80665 Pa, using the equation:

P = ρ·g·h/1000

or TL/DR how hard the air coming from that fan is pushing

It refers to how much resistance the fan can overcome while moving x-amount of air. In our case, the resistance comes from pushing the air through the narrow passageways of the heatsinks. Another term for it would be back-pressure.

The higher that resistance the harder the fans has to work to move air through it.

Fans for miners or any other device with high-density fins on the power devices have to over come a substantial back-pressure to be able to move the required airflow through the heatsinks.

By and large to produce high pressure a fan either A) has to be fairly thick to control how much air leaks between the fan blades and the housing. Is why most PC fans @ 25mm thick suck at producing any real pressure. Miner fans are generally >35mm thick. Or B) the other way to get the pressure is speed. Put the 2 together and yer Golden.

You guys seem pretty knowledgable. How would 2 fans stacked together work? Twice as good, waste of a fan or total disaster?

Geiger

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