Noctua NF-S12B 120mm Case fan
Posted by: Dan on: 05.01.2010 01:00:00 [ Print | 0 comment(s) ]
Without fancy sound meters and airflow measuring instruments, thereís not a lot you can do to accurately test a fan. It was suggested running the fan on a heatsink against the NF-U12P, but this wouldnít be a fair test because thatís where the NF-U12P is designed to be used, but the NF-S12B isnít. So Iím going to try and compare the fans as best I can by my subjective observations. Hereís what I found.
In order for me to test these fans I needed to have a system that made no noise. So I stopped every fan in my system and ran it completely passive while I was testing the Noctua fan(s). The only noise I couldnít stop were my (rubber grommet vibration dampened) HDDís, and even those turned out to be too loud in the end!
As an aside, in trying to get my PC (and room) as quiet as possible, Iíve I discovered that my monitor actually makes a quiet humming noise when on low brightness levels. Thatís how quiet I got my room, and Iím actually quite gutted that I discovered this as itís going to bug me no end now that I know itís there!
So, on to my observationsÖ
This fan can be ridiculously quiet. When using it with the ULNA (600rpm) I couldnít hear the fan without putting my head right next to the fan. With using the LNA (900rpm) I could just about make out a soft choppy noise coming from the fan. Both of these speeds were quieter than my HDDs that were chugging away in the background. On full speed the S12B is about the same noise level as the P12.
In terms of air movement, the S12B moves more air in an open space at full speed than the P12. With the LNA (900rpm) it is difficult to tell the two apart in terms of airflow, I think the S12B just edges out the P12 though. But with the ULNA (600rpm) itís impossible to judge, apart from saying both fans arenít moving very much air from running so slowly. But, for people who want their PCs that quiet know that sometimes just the slightest amount of airflow is all that is needed.
Next Page - Conclusion