Let's first compare the values on the Intel CPU in the range of 65 to 245 watts of waste heat. The gray dotted line represents the values I could achieve with the Alphacool polar bear Aurora 360 with the same fan curve, but three fans on the 360 radiator. In this respect, the comparison may seem a bit unfair, but you can also see that push-pull with two fans doesn't perform so much better now than the setup with only one of the fans.
Up to approx. 155 watts, the difference is really marginal and it only becomes significantly larger when power is significantly higher. For measurements up to a maximum of 125 watts and a simple delta to room temperature, the difference will surely fall within the range of possible measurement tolerances. Since I generally wait at least 30 minutes until the final values are available and the room temperature can be kept largely constant, the values visible here are a pure laboratory value.
The inverse sounds all too logical: the private user will hardly notice it and can actually do without the second fan if it does not exceed the limit of 125 watts. But even with higher power losses, you still have to question the meaning of a push-pull assembly, because it is also a bit louder with two fans.
I come to the volume in a while, because this noise emission is caused by the fans and the respective fan speeds. If we now look at both curves once, they run almost parallel to each other as long as the speed maximum is still exceeded. Since my curve from approx. 75 °C is already designed to the maximum, in order to simulate sufficient reserves for summer roof chamber temperatures later on, the curve is only logical. However, we are already talking about extremely high power losses of almost 250 watts.
Finally, let's look at the noise emission, that is, what is so often referred to colloquially as volume. Up to approx. 125 watts the system remains almost whisper-quiet and it doesn't really get loud even at almost 250 watts. The sovereign cooling is bought with a rather moderate 41.6 dB(A), which is not really much and really does not have to shy away from the comparison to smaller water cooling or even closed compact water cooling.
Noctua NH-U12A
 | Zentrallager: verfügbar, Lieferung 3-5 WerktageFiliale Wilhelmshaven: nicht lagerndStand: 20.04.24 14:52 | 115,59 €*Stand: 20.04.24 14:53 |
 | ab Lager | 115,60 €*Stand: 20.04.24 13:58 |
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