Sound Level Testing

While we were testing cooling capabilities, as outlined in our recent introduction article, we were also tracking the sound level of each of the coolers using a Risepro SPL meter attached to a boom arm pointed directly at the fans of the radiator at a distance of 12 inches. We recorded the dB(A) level for each fan and pump speed tested. The ambient room sound level measured 33 decibels. Displayed below are the results of our Stock Clock Testing.

100% Fans – 100% Pump

At maximum fan levels, the Enermax AQUAFUSION 240 hit 53.4 dB(A) while the Corsair H115i Platinum hit 49.4 dB(A). From a subjective perspective, both coolers sounded loud but not high pitched. We suspect the difference in sound is, mostly, related to the maximum RPM of each fan (Enermax and Corsair units at 2200 RPM and 1800 RPM respectively).

1500 RPM Fans – 100% Pump

Dropping down to 1500 RPM, the Enermax AQUAFUSION 240 moved up nicely in the relative performance metrics by hitting 44.1 dB(A) and the Corsair H115i Platinum was a solid 3.7 dB(A) behind at 47.8 dB(A). Both units were far less obnoxious at this fan level, but they are still not at a level we would want to run on a day to day basis (though the Enermax is much closer to that than the Corsair). The AQUAFUSION 240, however, could not quite catch up to the SilverStone PF360-RGB though.

1000 RPM Fans – 100% Pump

When we lowered the fans down to 1000 RPM, the Enermax AQUAFUSION 240 pulled into lead the with a value of 37.4 dB(A) while the other AIOs (save for the SilverStone PF36-RGB who hit 38.7 dB(A)) tied at 39.9 dB(A). At this point, the noise sounded like it merged with the background noise and this seems like it would make a good day to day fan speed.

600 RPM Fans – 100% Pump

Lowering the fans to 600 RPM (the lowest level we could keep them spinning at), the Enermax AQUAFUSION 240 continued to be the quietest at 35.8 dB(A). The SilverStone PF360-RGB and the Corsair H115i Platinum were both next as they came in at 37.4 dB(A). At this fan level, the whirr of the pump was louder than the fans.

600 RPM Fans – 50% Pump

Finally, reducing the pump speed to 50% caused three units to tie at 35.8 dB(A) while the Enermax AQUAFUSION 24o slipped ahead of them at 35.2 dB(A). We could not ascertain a difference between ambient noise in the room (measuring 33 dB(A)) and the AIOs running.

Save for testing at stock clocks with Max fan RPM and 100% pump as well as 1500 fan RPM and 100% pump the Enermax AQUAFUSION 240 was the quietest unit we have seen so far in our AIO testing. That is definitely a solid outcome given the competition. With that said, let’s move on and recap all of this for you today!

David Schroth

David is a computer hardware enthusiast that has been tinkering with computer hardware for the past 25 years.

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