Archive for December 10, 2010

Same as my round 6 testing and methods with the exception of using a Hardware Labs 140mm SR1 radiator. Seems as though we’re getting more and more 140mm radiator options, so it would be nice to get a feel on how a fan performs on one from a noise perspective. This thread is devoted toward more real world like testing of fans physically mounted to the HWlabs SR1 radiator.

Special thanks to the many generous sponsors:

Here is the list of fans, sponsors and results currently complete. I plan to do these 140mm fans as well as a few of the top performing 120mm fans on an adapter for 120mm options.

First theĀ APPLES TO APPLES COMPARISON

and theĀ APPLES TO ORANGES COMPARISON
The 120mm fans are tested on a BGears slim profile 120>140 adapter. Soo…the 120’s will be getting a small shroud benefit from being further from the radiator fins. In order to see how much if any this diffence means, I’m going to retest my top 140 fans with a shroud and include them in the below chart.
The below chart is sort of a mix, not all tested equally, so take that into account when reviewing:

CONCLUSION
140mm fans only: It’s pretty tight with most of the results within the 3dbA or lower “Barely Perceptible” limit. There are however some fairly notable sound quality issues, particularly with the 7 blade fans at higher speeds including the yates. For low speed, I would tend to favor the Thermalright X-Silent, for high speeds, the Aerocool Shark.

120mm fans on an adapter: This is a bit apples to oranges with the adapter, but it’s fairly surprising just how close 120mm fans perform to 140mm fans on a CFM per dbA ratio perspective. The 140mm fans do have some CFM per RPM advantage and seem to produce a slightly lower frequency tone, but their noise levels were pretty much the same. This makes some of the stronger performing 120mm fans a very viable option on 140mm radiators. I had really hoped the 140mm fans would be a huge benefit over 120s, but I’m just not finding that. There is a good sized advantage to the larger 140mm radiator and reduced restriction, but the gain is in the radiator frontal area, not the 140mm fan itself.

I have a few more 140’s coming but that’s what I think so far…
Cheers!
Martin