CoolIT ALC VANTAGE review - Noise levels

Noise levels

With a certified dBA meter we measure how many dBA originate from the PC. It's slightly subjective as there is always noise in the background, from the streets, from the HD, PSU fan etc etc, so this is by a mile or two not a precise measurement. You could only achieve objective measurement in a sound test chamber. Take this measurement as an indication, not a precise measurement please.

The human hearing system has different sensitivities at different frequencies. This means that the perception of noise is not at all equal at every frequency. Noise with significant measured levels (in dB) at high or low frequencies will not be as annoying as it would be when its energy is concentrated in the middle frequencies. In other words, the measured noise levels in dB will not reflect the actual human perception of the loudness of the noise. That's why we measure the dBA level. A specific circuit is added to the sound level meter to correct its reading in regard to this concept. This reading is the noise level in dBA. The letter A is added to indicate the correction that was made in the measurement. Frequencies below 1kHz and above 6kHz are attenuated, whereas frequencies between 1kHz and 6kHz are amplified by the A weighting.

But let's have a peek at noise levels. We take a DBa gun and point it at the working PC and take a distance of 75 CM. The PC again, is stressed at 3300 MHz on the CPU with 80% RPM set in the BIOS (Performance set mode on Vantage). These as such are noise levels measured under heavy CPU load:

On average and with it's own PWM controller, the noise level will be much lower. The cooler does have another strong selling point, though not silent if the CPU is heating up, it isn't noisy at all either, DBa levels are roughly 40 DBA under full load with the processor a tiny bit overclocked.

The product is just very very silent.

But let's really push the cooler and overclock some more, shall we ?