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Gentle Typhoons or Noiseblocker NB-BlackSilent PRO PL-1/2?

post #1 of 17
Thread Starter 
Short version: I'm adding two fans to my case: one exhaust fan at the top-rear of the case and one 'movement' fan on the bottom/center. I want them to be damn quiet (silent if possible), but still move air well through the computer. Which fan between the Gentle Typhoon, NBBS PL1, and NBBS PL2 would you guys pick for either/both roles?


Long version: If I understand the air flow right, it's flowing in via a front/bottom fan through the 5.25 drive bays into the main chamber. PSU is on in the bottom/rear corner, and a GTX 460 separates the main chamber into an upper and lower area. Air is vented the back of the case from the GPU itself, and air that drifts up around the GPU is vented out via 1x 120mm fan on the rear/top of the case.

SPsCurrentAirflow.png

What I'm looking for is more like this:

SPsExpectedAirflow.png

The bottom/center area has no vents through the bottom, but I'm more expecting it to move air already in the case upward and only drawn in a little new air via the exposed vents by the PSU. I believe one or both fans on the GTX Hawk Talon Awesome are pushing air against the sink/card, so the bottom-mounted fan would feed it more air and move some up around it into the upper chamber.

If choosing between the various Gentle Typhoons, the NBBS PL1, and the NBBS PL2, which would you guys suggest for the 'movement' and exhaust fans?
    
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post #2 of 17
prices the same? that would be my main factor on deciding between those fans. the GT's excel where static pressure is involved, i would say put a 140 at the top of the case because it will move as much (if not more) than a 120mm fan but quieter (as long as you dont get a really cheap one, xigmatek makes some pretty decent and inexpensive 140mm fans) and on the bottom it shouldn't matter too much.... GT's and NB's are both impressively quiet fans but GT's are really shine above the rest when being used on rads/heatsinks/high static pressure situations

edit: if their are no vents in the bottom of the case then their is no need for that bottom fan... just get a nice 140mm fan for the top and call it a day

edit2: just looked in my case and i got a NB pk-3 and a thermalright x-silent and i would honestly say that i should i have just gotten 2 thermalright x-silent's the NB is very nice but i really didn't need such a nice 140mm fan since its only running at such low RPMs (i would highly recommend the 140mm thermalright x-silent)
Edited by twich12 - 7/9/11 at 2:16am
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post #3 of 17
Thread Starter 
The difference between the two is about $7-9, with the Noiseblocker being more expensive but, unlike the GT, you can actually find it.

I've been reading a lot more about air movement in cases and it seems like I'm now looking at another quasi-positive-vs-negative thought train. On one hand, the top of of my case has only one fan mount at the top/rear and no case wall mounts for fans at all. On the other hand, I'm not averse to busting out power tools to make the room necessary; I just want to see if an easier/simpler option exists first. I have a feeling I'm going to be cutting a spot for a side-mounted fan though, just to feed fresh air directly to the CPU cooler.

Anyway, not deviating too far from the topic, anybody else have a preference for Gentle Typhoons vs NBBS PL-1/2s for intakes, exhausts, and internal movement fans? Are the GTs worth waiting for? The NBBS worth springing for?
    
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post #4 of 17
Well, this is quite interesting topic.. because I'm also to replace my front intake fan (lame Corsair 600T 200mm fan), which fall into between the GT AP-15 and a recommended 140mm fan. My thought was, AP-15 can move a decent wave of air but I also think that 140mm fans will do better.. Is it Noiseblocker really worth it? Because I read on

140mm fan roundup and Fan Roundup

There are better 140mm fan than Noiseblocker...
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post #5 of 17
Thread Starter 
In that same article, the top three were Thermalright's X-Silent and TY-140 and the Scythe Slip Stream 140. I figure if I go to a 140mm fan, I'll do one of those. I haven't heard a peep from anyone about the 140mm GTs, and the 140mm Noiseblockers were beat out by the fans listed above.

I need to compare numbers to see how those 140mm fans compare to the 120mm GT and NBBS fans, but even then the area below my DVD drive can only fit a 120 so it would mostly be for future reference for case side- or roof-mounted fans.
    
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post #6 of 17
OP: Did you ever pick?

I'm trying to decide between the GT-13 and the PL-1/PL-2 as well!
post #7 of 17
For HS I would always recommend AP-15, the pressure to noise is unmatched for 120mm not even 38mm thick fans beat it. For airflow Noiseblocker, or certain 38mm delta surprisingly can actually match it, but it's very close. Also AP-15 have a larger fanning cone of airflow than most, so if you want a narrower cone of airflow, like for specific case intake or directional flow management, NB or deltas could be better.

Or just get 140mm fan, the TY-14 is unmatched.
post #8 of 17
I have the Blacksilent Pro in both 140mm and 120mm and imo they are overpriced and unimpressive.

The NB-Multiframe however, is exceptional.
    
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post #9 of 17
I thought CFM was for case fans while static pressure was for heatsinks and radiators. Haven't heard anybody here using Noiseblocker fans as case fans.
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post #10 of 17
Noiseblockers are low pressure fans built for acoustics. I'm sure they would be fine on wide spaced fin heatsinks (actually tried and they're not shabby), but they're definitely not known for static pressure.

At least regarding their Blacksilent, Blacksilent Pro, and Multiframe line. Maybe they make high pressure fans I'm not familiar with.
Edited by Otterclock - 3/22/12 at 9:37pm
    
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