Corsair Hydro H50 CPU Water Cooler

Cooling
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TEST RESULTS

Stock Fan Measurements

Stock Fan Specifications
Manufacturer
Corsair
Power Rating
?
Model Number
?
Airflow Rating
?
Bearing Type
?
RPM Rating
1700 RPM
Corners
Open
Noise Rating
?
Frame Size
120 x 120 x 25 mm
Header Type
4-pin PWM
Fan Blade Diameter
105 mm
Start Voltage
~5.0 V
Hub Size
41 mm
Weight
120 g
Data in green cells provided by the manufacturer or observed; data in the blue cells were measured.

The stock fan was a bit of a mystery as it had no identifying markers and no specifications were listed for it on Corsair's website except for the RPM rating. The blades had odd little notches at their bases, and were arrayed in an orthodox manner, very close together at the hub. The blade diameter was also 5~6 mm shorter than most 120 mm fans partly because the fan housing was thicker than the norm.


Odd notches near the hub.


Stock Fan Measurements
Voltage
Speed
SPL @1m
12V
1610 RPM
24 dBA
10V
1310 RPM
18 dBA
9V
1030 RPM
14 dBA
8V
680 RPM
<11 dBA
7V
480 RPM
5V (starting voltage)
330 RPM
Measuring mic positioned 1m at diagonal angle from the intake side of the fan.
Ambient noise level: 11 dBA.

The stock fan was loud and buzzy at full speed and turbulent but smooth at 10V. At 9V, it was quiet but developed a bit of a hum, and at 8V it was completely inaudible. Overall it was an excellent sounding fan relatively free of tonality.

Like many PWM models, it did not respond in a typical manner to voltage control; the speed dropped off rather quickly when undervolted, becoming inaudible at a fairly high voltage. The fan speed changed very gradually between 5V and 8V.


At 9V, the H50 stock fan measured 14 dBA@1m.



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