It’s been a long time since we’ve seen the prototype, but the first passive cooler from Noctua with the designation NH-P1 was finally introduced this week. Its design is rather different from usual coolers as the main priority is maximization of heat dissipation to its surroundings. And to increase its efficiency, a new A12x25 LS-PWM fan with very quiet operation was also introduced as complementary accessory for semi-passive cooling.
Test results
Noctua NH-P1 scales beautifully with the fan speed, so it can be seen that its design does not put excessive resistance to airflow. Furthermore, it is nice to see that the fan in the side position provides better results in cooling efficiency. In addition, the noise of the Noctua NF-A12x25 LS-PWM fan in combination with the NH-P1 cooler is extremely low even at maximum speed. On request, I’ve added the results with the NF-A15 PWM fan in the upper position with the air flowing through the cooler (push). In addition, thanks to its atypical shape, this fan can be attached to this cooler using the included clips.
Perceive the value 33.0 dBA at 0 RPM only as the ambient noise level, in the fully passive mode the cooler is of course completely inaudible.
