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Silenx Fans: OCN Hardware Review

post #1 of 15
Thread Starter 
Ladies and gentlemen, I have completed the first hardware review of Silenx fans for OCN:
http://www.overclock.net/hardware/sh...hp?product=535

Please visit there and give me your comments. If you would like to see me comment on some other aspect of it, let me know! In my comparison of it with other fans, I was very methodical and as objective as possible, so I feel that I have come up with a good review that should be useful to anyone who wants to know more about the fans, how they compare with current ones, as well as how accurate Silenx's ratings are.

Pictures of the fan testing setup can be found in my case mod log, Project: Ablative Armor (link is in my signature), post 35 I think.

I have 3 of them running in my case now and I have not looked back.
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post #2 of 15
Thanks for the review.. I'm reading it right now.
I ordered some from CyberDruid. should be here soon.
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post #3 of 15
Thread Starter 
Quote:
Originally Posted by wayne_sony View Post
Thanks for the review.. I'm reading it right now.
I ordered some from CyberDruid. should be here soon.
If you mount them correctly, with the rubber grommets, you won't be disappointed.
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post #4 of 15
Did they help you to lower your temps overall? what bout cpu temps?
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post #5 of 15
Any way of testing CFM or sound?

For CFM, maybe the distance the fan can no longer more a piece of paper?
For sound, the distance you can no longer hear it.

Then compare these with your other fans. It won't be exact by should provide us with relative performance.
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post #6 of 15
Thread Starter 
Quote:
Originally Posted by DuckieHo View Post
Any way of testing CFM or sound?

For CFM, maybe the distance the fan can no longer more a piece of paper?
For sound, the distance you can no longer hear it.

Then compare these with your other fans. It won't be exact by should provide us with relative performance.
I honestly feel that the flowrate measurement is accurate, because it does blow a significant amount of air. Comparing the flowrate rating with the fans I listed, whose flowrates are known and given, would indicate that it is accurate. The Streamliner pushes 54.6 cfm, and the Silenx fan was easily pushing more than that, so if we assume that the Streamliner rating is accurate, then the Silenx fan flowrate rating is also accurate.

The sound rating was tested by comparing against other fans whose ratings are known, much the same as the flowrate. The Streamliner is rated at 19.6 dBA, and it was quieter than the 17 dBA-rated iCage fan, so it is reasonable to assume that its rating is accurate since it is the quietest yet rated the highest. Based upon this, I subjectively put the rating of the Silenx fan at around 20 dBA. I have come up with another way to comparatively measure the sound produced by the Silenx fan, but I need a fan controller that displays RPM and mine just died... If someone has a Silenx fan, a fan controller that shows RPM, and a fan that is rated significantly higher than the Silenx fan in both flowrate and noise, I would be more than happy to explain my idea.
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post #7 of 15
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Quote:
Originally Posted by wayne_sony View Post
Did they help you to lower your temps overall? what bout cpu temps?
I have a Silverstone CFP51-B drive bay converter in which 4 raptors are installed. With the default 120mm fan for this drive bay, the temperatures are around 35 degrees C (the default fan runs at around 1100 RPM). The Silenx fan, which is about the same in terms of volume production, has lowered the average drive temperature to 32-33 degrees C. This is a significant drop in temperatures given that all I did was increase the flowrate across the HDDs, which contain no fins or any other typical cooling device. This implies that the flowrate of the Silenx fan is quite good, and the 72 cfm rating is accurate.

I do not use a Silenx fan on my CPU because I want one that blows over 100 cfm, and no Silenx fan is rated that high. Unfortunately, such a fan also means that the noise rating of the fan be well above 30 dBA; the Silverstone FM121 I have doing the job blows 110 cfm at nearly 40 dBA.

The overall noise produced by my case is also much less now that I have the Silenx fans in there, though by how much exactly I cannot say since some of the noise reduction can be attributed to the rubber grommets supplied by Silenx. Unfortunately, this also means my PSU sounds much louder...
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post #8 of 15
Quote:
Originally Posted by stargate125645 View Post
If someone has a Silenx fan, a fan controller that shows RPM, and a fan that is rated significantly higher than the Silenx fan in both flowrate and noise, I would be more than happy to explain my idea.
How about one of your mobo's fan headers?
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post #9 of 15
Do you guys change your PSU fans also to Silenx?
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post #10 of 15
Quote:
Originally Posted by nitteo View Post
Do you guys change your PSU fans also to Silenx?
I wouldn't unless you know the specs of your PSU's fan. In my case... my PSU is virtually silent already.
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