Help Deciphering mmH2O between brands

[killer tiger]

I recently purchase a Noctua NF-A9 pwm fan as a replacement for my zigmatek fan on the zigmatek heat sink [loki]. On my q6600 at 2.4ghz.

My big question is does this numbers mach or how do I convert them.

Noctua fan is 2,28 mmh2o the Xigmatek fan is 3.7 mmh2o

[Zeke]

Convert them to what exactly (Pa, mmHg, something else)? Those numbers indicate the static pressure the fan can output (at 100% RPM I suppose). What that says is that your Xigmatek would be more efficient on a radiator compared to Noctua. Note that doesn't mean Noctua is worse, as there are a lot of side factors, such as noise, airflow and so on.

[ZetZet]

It's a value of water displacement in a tube during the experiment. Xigmatek has more static pressure

[MeltingPoint]

Take it as a grain of salt. Manufacturers do not have the same testing methods so the numbers are meaningless when conparing different brands

[.spider.]

Take it as a grain of salt. Manufacturers do not have the same testing methods so the numbers are meaningless when conparing different brands

Yes, Blacknoise is the only company I know which gives information about how they measure.