[bobni]

On a H100 what is the best possible fan for a push configuration from a performance, reliability and noise standpoint? Am I correct in looking at only PWM fans ?

COUGAR CF-V12HP Vortex Hydro-Dynamic-Bearing (Fluid) 300,000 Hours 12CM Silent Cooling Fan with Pulse Width Modulation is used and many say it performs very well.
http://www.newegg.com/Product/Produc...82E16835553002

Noiseblocker NB-Multiframe M12-P 120mmx25mm Super Ultra Silent PWM Fan - 1000-2000 RPM is another choice but not any info on performance with a H100. I read a post that these make a clicking sound when at 1000 rpm , anyone know for sure?
http://www.performance-pcs.com/catal...ac33c1715adf37

It appears the above two are top choices based on performance , noise and reliability. There are delta fans that will outperform but have terrible noise problems, but I do wonder how a delta would perform when controlled by PWM.

Interested to hear opinions on the best of the best , at this point lets leave value/cost out of the deliberations.

 

[t-ramp]

The 1850rpm Gentle Typhoons are popular.

 

[Worple]

^ What he said

 

[TechSoldier]

And they are very quiet!

 

[pchow05]

AP-15 or Cougar either 12mm fan.

 

[Mergatroid]

You should have posted this in the H100 thread or the Hydro series thread. The fans you linked to are not as good as the H100 stock fans. If you're more interested in performance, just stick with the stock fans. They offer excellent air pressure and cfm.

If all you're interested in is noise, then try some Yate Loons, they are one of the best budget fans available. Another good option is Scythe Gentle Typhoons.

Here is a thread on fan testing:

http://www.overclock.net/water-cooling/859483-round-6-fan-testing-working-thread.html

Note, there's no such thing as "the best fan". Some have better pressure, some better airflow, some lower noise and some offer a compromise of those three specs. For a rad, the most important thing is the static pressure. I would recommend trying the stock fans before deciding to replace them. They're quite good.