We used the default PWM setting for the testing.
Sound Level Testing
We used a standard generic digital sound level meter at 15 inches. It is important to note we used the MicroCool Banchetto 101 Chassis for testing which is an open chassis. This means you are hearing the CPU coolers fan unobstructed.
We use Arctic MX-2 for all heatsink cooler tests and in fact we use it for all builds, test or otherwise. We run the AIDA64 Engineer stability test as our burn in programme for thermal paste, which allows the paste to spread out and share the love across the mating surfaces. It is worth doing, we always notice a drop in temperatures after 30 minutes of burn in.
The Scythe Grand Kama Cross 3 is pretty much bang in the middle of the chart. It has some decent competition ahead and behind it. Under load conditions however, the performance is slightly lower down the chart. It is still a decent performance with one fan, something that needs to be remembered when looking at the competition on the charts.