Noctua NH-D15S CPU Cooler Review

Another D15 from Noctua? Well, the NH-D15S is designed to offer more support for those with tall RAM heatsinks among other things

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Acoustic Performance

Each cooler will be tested at night as it is naturally the quietest time of the day. A decibel monitor is placed at 30cm away from the cooler which is much closer than you would probably be sitting, but it allows for consistent readings in my eyes. The system is left to idle for five minutes to ensure it is at its most rested workload and then the readings are taken. The fans are in PWM mode rather than ‘x’ volts as some fans will not spin without it getting its start voltage. The PWM curves are set to the default ones that are supplied by the ASUS Z97-K’s BIOS. To find out how much noise the fan(s) will make under a full loading, I plug them straight into a 12v line to ensure that they are running at full speed to give you an idea of how much noise is created at maximum RPM ranges.

Acoustics 3.9GHz temp

Acoustics 4.5GHz

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