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Let’s start off with noise performance from each cooler at 100% fan speed.
This is important as it sets the precedence for which coolers we expect to deliver the higher levels of performance based on the faster and louder fans. Assuming that their performance is efficient in comparison to their noise output levels, that is.
The chassis fans are disabled, all case panels are on, and the sound meter is placed 12 inches from the side of the Fractal chassis’ glass side panel – roughly where a desk user will be sat.
Despite using a trio of high-quality Noctua fans, it is clear that noise performance is not a particular strength of the ROG Ryujin II 360 AIO at full fan speeds.
Those Noctua fans are loud at full speed and the overall cooler registers 52 dBA, making it one of the louder units that we have tested. With that said, the higher levels of noise output are actually the fault of the 4800 RPM 60mm fan embedded within the pump block unit.
Cranking this 60mm blower down to a tolerable 1500 RPM actually drops overall noise output of the cooler below 51 dBA. But, as always, we will continue to highlight full speed noise output and full speed thermal performance.
Of course, ASUS’ saving grace is that the control abilities for the cooling fans, pump, and embedded fan are all very good within Armory Crate. The low-speed capabilities in particular are highly positive.
