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Help deciding on case fans.

post #1 of 7
Thread Starter 
Hello,

I'm going to be upgrading the fans in my case fans soon and I was wondering which ones I should get. Christmas brought a performance pc's gc so I'll be getting my stuff from there. I also have a silver arrow ready to put in my case once my new ram gets here

I'm trying to make it as quiet as possible while getting better airflow. Funnily enough, even with stock fans I don't think my psu fan has ever turned on But I want more performance and less sound! (I know, I know, less sound usually equals less performance) For the three front 120mm intakes I was thinking Gentle Typhoons or Silverstone air penetrators . Now I know you might look funny at me for suggesting the Silverstones, but between my intakes and where the heatsink and graphics card is 6 inches. Right now the airflow when it reaches those two is rather weak. It was my understanding that keeping the air moving in a column was what the air penetrators were for. Does anyone have experience with the 120mm air penetrators as regards performance and sound vs the GT's? Feel free to suggest other fans though. However, I have no idea what speed I should use. I don't think I'll need AP-15's to better my current stock ones (something tells me those specs are a bit disingenuous, though I could be wrong. A possible setup I was mulling over was the top two intakes as air penetrators and the bottom one as a GT. I could gut the stock ones and use them as shrouds for intake GT's if that would be a good idea; case>GT>shroud.

There is a 120mm exhaust also. While waiting for my ram I put in my TY-140 just to try. It's exhausting far more air than stock and is near silent. The only problem is that where the blades overlap the case metal that air is rebounded into the case, which I don't believe is good news. In the future I might make cutouts for a 140mm fan, but I can't do that for awhile. Is there a recommended quiet and good 120mm exhaust fan?

My case also has 2 60mm fans which are way too loud. The only thing they do is exhaust the heat from the hdd's, currently they idle at 33C and run at 37C when doing lots of disk intensive things. I would like to replace them with something quieter also, maybe these Noiseblockers

Thank you. I apologize for the barrage of questions and noobness.
Edited by suitaroh - 1/5/11 at 7:18pm
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post #2 of 7
Upon looking at this thread, I was going to suggest the Silverstone AP121, but I see you already had them on your mind. I would go with those.
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post #3 of 7
In my experience the best compromise between noise and airflow is the 1450rpm (AP-14) model of the Gentle Typhoon series. It moves a goodly amount of air and in my experience is inaudible.

I used one of the 120mm Air Penetrators a while back and was rather underwhelmed. To me, it was considerably more audible than the AP-14 and, to me, didn't move very much air, despite the fancy grill on the intake side. Perhaps I had a bad sample but I would not recommend them for case fans personally.
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post #4 of 7
Quote:
Originally Posted by Siegfried262 View Post
In my experience the best compromise between noise and airflow is the 1450rpm (AP-14) model of the Gentle Typhoon series. It moves a goodly amount of air and in my experience is inaudible.

I used one of the 120mm Air Penetrators a while back and was rather underwhelmed. To me, it was considerably more audible than the AP-14 and, to me, didn't move very much air, despite the fancy grill on the intake side. Perhaps I had a bad sample but I would not recommend them for case fans personally.
I agree. You should not be looking to shoot columns of air into your case. You should be looking to fill your plenum with air and let it find its way out. For example, those 60mm fans can just go. With three AP-14's in front, if you leave the 60mm positions empty the air will just flow out quietly (no fans).

I was shocked when I looked at pics of this case. It's very good. It's one of those high end aluminum cases with no grills anywhere. The only thing I'd improve for modern use would be a 140mm fan position in the rear.

As for that rear position, I'd leave that empty. With a positive pressure case you don't need an exhaust fan.

Normally I'd recommend lower rpm front fans, but yours are behind solid doors, which not only attenuate the noise but also restrict the airflow: you need the higher airflow. In this case the AP-14's are the best fans for adequate airflow, low noise and good static pressure. Go for it.
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post #5 of 7
Thread Starter 
Quote:
Originally Posted by ehume View Post
I agree. You should not be looking to shoot columns of air into your case. You should be looking to fill your plenum with air and let it find its way out. For example, those 60mm fans can just go. With three AP-14's in front, if you leave the 60mm positions empty the air will just flow out quietly (no fans).

I was shocked when I looked at pics of this case. It's very good. It's one of those high end aluminum cases with no grills anywhere. The only thing I'd improve for modern use would be a 140mm fan position in the rear.

As for that rear position, I'd leave that empty. With a positive pressure case you don't need an exhaust fan.

Normally I'd recommend lower rpm front fans, but yours are behind solid doors, which not only attenuate the noise but also restrict the airflow: you need the higher airflow. In this case the AP-14's are the best fans for adequate airflow, low noise and good static pressure. Go for it.
I do like my case, it's quite nice Do you mean making the 120mm exhaust hole 140mm? Because I was thinking of doing that to put a fan there, but I'd do it and not put the fan there if that'd be better. I ordered three AP-14's and two of these for lest vibrations. Thank you a lot! Saved me $30 for not getting the two 60mm fans. Should I put a grill where they are now though? Something like this I'd need to paint it black though Also +1 for the use of plenum and the advice
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post #6 of 7
I agree with the statements above. The AP121 has been reported to be disappointing in multiple reviews that I have read. I own the Silverstone FT02 and it comes with three AP181 fans in the bottom. The AP181 fans are awesome. Do not confuse the 180mm AP181 with the 120mm AP121. If you hear people talking about awesome air penetrator fans they are probably talking about the 180mm ones.

I also agree with the statements about the 1450 RPM gentle typhoons. I own the 1850 RPM version and find myself slowing it down to about 1400 RPM with my fan controller. 1400 RPM seems to be the threshold of silence for these fans. 1850 RPM isn't loud but you definitely can hear it. I recommend the 1450 RPM gentle typhoon.
    
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post #7 of 7
http://www.directron.com/ixp7618.html?gsear=1...


I have 5 in my phantom case now...I havent been of 40 degrees under full load... thats ambient temp too.
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