I just checked, in my city I can get only the GT 1450rpm , not 1800rpm. but it's bad isn't it?

I can also find in our stores slipstream 1200 rpm, and Arctic Cooling AF12025 PWM.

which one is better?
I need mostly silence, cooling is very important too tough [=
if there's need , I'll take 2 fans.

Will Arctic Cooling AF12025 PWM do the job? or even 2 fans like this? I can't find the Akasa in my city... Only : 1. GentleTyphoon A14 2. AC AF12025 3. Apollish 4. ZM-F3 5. Slipstream 1200rpm which one has the best static pressure? and which one will drop the temps the most ? about the RPM speed, ca...

Hello! I need a new fan for my cpu cooler ultima-90 ,and I need it to be quiet AND as cooling as possible , I've been thinking about : 1.Scythe S-flex 1600rpm 2.Scythe GentleTyphoon AP15 3.Enermax Apollish 4.Scythe SlipStream 1200rpm 5.Arctic Cooling AF12025 PWM another question : will it help if I ...