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Worth it to switch all case fans to PWM fans?

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I currently have these fans on my Fractal Design R5.

http://www.newegg.com/Product/Produ...e=fractal_design_140mm-_-35-352-007-_-Product

While they are OK fans the idle RPM is still kinda noisy. Since they are only DC fans the ASUS Sabertooth X99 won't go less than 60% of fan speed. I am thinking of improving my case's idle acoustics. Do you guys think it is worth it to change all three of these fans out for some good old Noctua PWM ones?
 
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Bigger yet slower fans wont cut it for the computer case?
pc fans is way to subjective for me.
overclokced or not there are sweet spots with undervolting,but for that mb must be capable and finely tuned and somewhat lucky by scoring low leakege cpu.
 

Aquinus

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PWM tends to give you far better control of fan speed because you're pulsing +12v instead of a running at a reduced voltage.
 
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The 60% fan limit for DC is moronic to say the least. All DC fans work at 5V. And 5V isn't 60% of 12V. I don't get it why they limit it to locked 60%. It's so damn annoying. To my luck, it mostly works fine for me even at 60% and the rest are PWM anyway.
 
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maybe a bios update would allow you to better manage those fans,it iskind of strange as a newer board from asus is weaker in fan management as an older one,the older one circa 2009 crosshair iv formula
I think your board is nnot highe end from manufacturers pov.
 
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Was in the same boat OP, "bit the bullet" and :) TBH. I also did a bit of case modding whilst at it :) (SilverStone TJ06 factory case setup).



The TY-143s use PWM signal from mobo but are all powered off a splitter cable using 1x molex connector. The rear lower 120mm is powered off mobo, the rear upper 2x92mm had a PWM sharing feature so both are powered via 1 mobo header. The F12 PWM and 2x F9 PWM PST ~£11 delivered, the TY-143s were a steal on Amazon for £7 a pop, they tend to stay at low revs (<1000RPM) when idling/gaming but for stress testing can spin upto 2.5K if required :D .
 
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