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Inaudible PWM fans?

post #1 of 6
Thread Starter 
I'm looking for replace my Scythe Slipstream SY1225SL12HPVC-V PWM fan with something just as quiet. After running prime95 with it cranked all the way up, my fan started making scratching noises (only had it for a week!) so I'm looking for something more durable, just as inaudible (@800 rpm), but also has as much airflow. I would prefer something with higher static pressure as I will use it as a heatsink fan. I really like Slipstreams as they are inaudible at 800 rpm.

I still have another one of these on my NH-D14 which hasn't started making these noises yet. These PWM Slipstreams have an inherit ticking sound but this is different.
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post #2 of 6
yeah, the Slips are inconsistent. Good when they're good, iffy when they aren't.
The Noctua NF-F12 is very quiet up to about 1k, at least as a pusher. I've tried fans that have cooled a bit better (Sanyo Denki for instance), but always go back to the F12 for the noise:cooling ratio. Certainly quieter than the Slipstream PWM. A little pricey though.
Tom's Hardware recently did one of the better fan comparisons I've seen. They use the NH-D14, with each fan mounted solo in the center. http://www.tomshardware.com/forum/325062-28-cooling-roundup-2012.
    
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post #3 of 6
I have to wonder how accurate some of those tests are from my own personal experience. I have a Hyper 212+ and had to swap out the fan because it was so ridiculously loud. Either I got a bad fan, or it's a bit louder than 32dbA. My Slipstreams were much quieter, but still a bit loud for my taste. It wasn't until I swapped all my fans for Cougar Vortex and Thermalright TY-140s that the noise levels became tolerable.
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post #4 of 6
Thread Starter 
A lot of companies lie about the specs of their fans. IME, Noctua and Silenx wayyyyy overrate their specs. I initially purchased the 212+ because my friends recommended it and assured I would not be able to hear it. NOPE, even at 600rpm that thing was hopeless with scratchy motor noise and ticking. I then bought a Cougar Vortex but I didn't like the ticking motor noise at low rpms but it performed extremely well at high rpms. I can't tolerate noise at idle so I returned it too. Slipstreams are the best I've tried so far so I'm afraid to move from them.

After reading around a bit more especially on silentpcreview, I found out that Noctua has once again over-marketed the NF-F12. Quite noisy at low speeds with motor noise. I was really hoping that the F12 would actually be inaudible up to 800rpm. I could always try one and return it back to amazon if I don't like it.

I have quite the picky ear so I've ditch HDDs all together and store things on SSDs tongue.gif
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post #5 of 6
I think it's the adjustable VR on those. I've been running two Scythe SY1225SL12LM-P (intake and heatsink @ 250-400rpm during idle) and my system is sonically invisible. They can run 0-1300, depending how you have them set up and the maker of your motherboard can greatly affect how good or bad they run and sound.

Edit: Assuming they will fit, I'd recommend the TY-140 over anything. They have 120mm holes, but are ~150mmx140mm
Edited by Jocelyn84 - 4/8/12 at 5:25pm
     
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post #6 of 6
Thread Starter 
I discovered I can vary the speed of 3pin fans even with 4 pin headers on my mobo. This opened up a lot more possibilities so I've decided to get Gentle Typhoons instead. They are supposed to be the best high static pressure - perfect for heatsinks.

I'll probably get a SY1225SL12LM-P sometime down the line as an intake fan. Will have to see.

I also noticed that I plug in more fans into my rig, I have boot issues where the comp will auto restart as if I pushed my OC too far. And if I plug in a fan while my comp is on, my mouse and keyboard would stop working. Seems like adding more fans screw up my USB ports. Can anyone explain what is going on?
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