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I am overwhelmed with 120mm fan choices... - Page 2

post #11 of 14
Quote:
Originally Posted by nleksan View Post

If you want some seriously good fans, then the only ones I recommend are the Koolance 2600rpm 120x38mm and 120x25mm 2600rpm fans, which push 117CFM/106CFM and 5.4mmH2O/6.33mmH2O respectively. Dual ball bearing motors and only $8-9/ea. I have tried countless fans, and you will not get better fans than these until you step up to Sanyo Denkei San Ace fans.
I have a feeling those Koolance fans are actually Deltas, lol. That 2600rpm 120x38 is from the AFB-series so you have to use PWM or it clicks like hell
Don't know about the 4000rpm though, it looks like a PFB and i'm not sure if that one ticks. I only know FFBs ticks like hell ...
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post #12 of 14
I have a bunch of the Koolance fans, some of all 3 (the 120x38mm and 120x25mm 2600rpm as well as the 120x38mm 4krpm),and not a singleone has any motor noise out of the ordinary. I have run some for six months "as they came", just opened the box and pluggedthem in, while other iI first opened up and added 3-5 drops of Redline 0W40 (true) synthetic oil, an ester based motor oil that has kept my race engines literally clean as new and reduced wear (such as camshaft lobe scuffing) by at least ninety percen.
The difference between the two is that the ones that have Redline oil have about 1/3rd the speed variance (report between 2590-2610rpm) as the out of the box ones (2565-2640rpm). They also undervolt even better, but how much exactly I can't say as I haven't had the opportunity to play with my sound pressure meter tommeasure the acoustic profiles.

I CAN say that none of them have ever had any clicking, even with as little as 25 percent power or as much as 130 percent (3050rpm). I have quite a collection of fans, including a large number of Delta, Pabst, Panaflo, Nidec, and Sanyo Denkei fans, and these are actually the most similar to the San Ace and Nidec fans, in appearance, performance, and build.
   
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post #13 of 14
Thread Starter 
I appreciate all your input on the Koolance fans, at least your able to tell me why you recommend them.

I had to chuckle a little bit at this part though, you sound like a spokesperson for Redline! I definitely believe what you are saying though. I'm a tried and true believer in synthetics for my cars as well, so I'm quite sure they would enhance performance of fan motors as well.
Quote:
Originally Posted by nleksan View Post

...Redline 0W40 (true) synthetic oil, an ester based motor oil that has kept my race engines literally clean as new and reduced wear (such as camshaft lobe scuffing) by at least ninety percen....

I'm being a little lazy so I haven't done any research of my own on the Koolance fans, can you tell me which ones would be ideal if I had no interest in buying or using a fan controller?

Aside from 4 PWM fans on my radiator, the other 3 or 4 case fans are going to be running wide open but I dont want it to sound like a ShopVac under my TV. Some noise is acceptable, as my OEM Corsair fans are ramped up to 2200 RPM at the moment but they are very tolerable. Most of the time I don't notice them at all because of the window A/C unit that is about 3 feet away from the PC.

At most, the only control over my case fans that would possibly interest me would be 2 fixed speeds, a Low and a High setting if you will, and completely automatic. That way I can maintain positive case pressure when the radiator fans ramp up. I dont care for dirty PC's or too frequent cleaning sessions either, so I usually strive for constant positive pressure. I know it's redneck but I use cigarette smoke to check all my case openings for pressure differential.

Usually I just add more case fans until I get my desired airflow, but it would be nice to get away with fewer, but higher performing fans. At the moment, I'm actually running with no rear exhaust fan. I have moved that fan to the floor of the case as an intake. The only exhaust fans are my 2 OEM Corsair radiator fans, blowing straight out the top. My PSU is bottom mounted so it's airflow is a closed circuit.

And many thanks for everyone's input in this thread, which is basically an age-old rehash of the same question that many many people have.
Edited by Baskt_Case - 5/26/13 at 4:22pm
    
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post #14 of 14
Quote:
Originally Posted by nleksan View Post

I CAN say that none of them have ever had any clicking, even with as little as 25 percent power or as much as 130 percent (3050rpm). I have quite a collection of fans, including a large number of Delta, Pabst, Panaflo, Nidec, and Sanyo Denkei fans, and these are actually the most similar to the San Ace and Nidec fans, in appearance, performance, and build.
You should reveal what these fans actually are tongue.gif Might be custom Deltas or something (the ones i mentioned) because i'm pretty sure no one else has that unmistakable Louver that PFB-series has biggrin.gif (184CFM version by the way) and the 116 is definitely a custom AFB-job
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Ayase Eli
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Zotac SSD Premium 480GB OCZ Vector 180 480GB Hitachi 7K3000 3TB 7200rpm ID Cooling Frostflow 240L 
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ID Cooling Frostflow 240G Phanteks F140MP x2 CoolerMaster Silencio FP120 x2 Phanteks F140SP 
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