Is static pressure the only crucial factor for radiator fans

[Warpten_]

I happened to look up the specs sheets for the fans in my PC and noticed that my Corsair QL120 case fans should have higher static pressure at 1500rpm than the MSI TORX4.0 fans that came with my AIO cooler. Would this then make the Corsair fans a better choice for the radiator if I don't plan run them at full speed or are there factors other than just static pressure which should be considered for radiator airflow?

I realize posting an equation may be overly complicated for a quick forum question but I believe the pressure at a certain RPM can be calculated as P_2 = P_1 x (RPM_2/RPM_1)^2

Basically the math says that static pressure should be proportional to the RPM squared. Looking at the specs sheet from MSI, this equation hold true for the maximum and minimum pressure and RPM.  At 1500RPM the equation yields a lower pressure for the MSI fans compared to the Corsair fans at the same speed. 

None of these fans seem to be particularly suited for radiator mounting but I expected the fan included with an AIO to have far higher pressure at all RPMs which is why I'm wondering if I have missed something as this is not the case. 
 

[TatamiMatt]

9 minutes ago, Warpten_ said:

I happened to look up the specs sheets for the fans in my PC and noticed that my Corsair QL120 case fans should have higher static pressure at 1500rpm than the MSI TORX4.0 fans that came with my AIO cooler. Would this then make the Corsair fans a better choice for the radiator if I don't plan run them at full speed or are there factors other than just static pressure which should be considered for radiator airflow?

I realize posting an equation may be overly complicated for a quick forum question but I believe the pressure at a certain RPM can be calculated as P_2 = P_1 x (RPM_2/RPM_1)^2

Basically the math says that static pressure should be proportional to the RPM squared. Looking at the specs sheet from MSI, this equation hold true for the maximum and minimum pressure and RPM.  At 1500RPM the equation yields a lower pressure for the MSI fans compared to the Corsair fans at the same speed. 

None of these fans seem to be particularly suited for radiator mounting but I expected the fan included with an AIO to have far higher pressure at all RPMs which is why I'm wondering if I have missed something as this is not the case. 
 

Are the max pressure values the same regardless of RPM? Another way to put it, are both fans max RPM's 1500?

 

Also if you have the spec sheets for both are you able to send them? Or links to them?

[podkall]

The question is if your AIO even needs better fans, or if the fans that came with it are already good enough.

[ChrisLoudon]

25 minutes ago, Warpten_ said:

Basically the math says that static pressure should be proportional to the RPM squared

Dude, you're about to head into a rabbit hole of misery.

 

I'm not gonna say a fan is a fan is a fan but I kinda am.

 

I would class myself as a custom loop fanatic and I couldn't give a toss as to whether my fans are this that or the next thing.

 

Does it look good in this build? Yes / No.....

[OddOod]

Welcome to the forums!
In theory, more static pressure is more good. But at the end of the day you have to ask yourself: Is it worth the time? 
It kinda comes down to what's your goal? What are you trying to achieve? Better noise? Better temps? Bigger number in some benchmark? 

[Warpten_]

Thanks for the replies and warm welcome, everyone! I think I will keep the fan setup the same as before as you guys suggested since it may have been more trouble than it was worth. I have also realized that I confused my fan with another from MSI so the pressure is actually much higher and more reasonable. Thanks again