Titan Fenrir & Coolermaster Hyper 212 Plus: Direct Touch Revisited

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TEST RESULTS

Stock Fan Measurements: Titan Fenrir

Stock Fan Specifications
Manufacturer
Power Rating
3.84 W
Model Number
TFD-12025H12ZP
Airflow Rating
78.41 CFM
Bearing Type
Z-Axis?
RPM Rating
2150 RPM
Corners
Open
Noise Rating
39 dBA
Frame Size
120 x 120 x 25 mm
Header Type
4-pin PWM
Fan Blade Diameter
110 mm
Starting Voltage
~ 3.8 V
Hub Size
43 mm
Weight
130 g
Data in green cells provided by the manufacturer or observed; data in the blue cells were measured.

The stock fan, despite its chrome painted blades, looks a bit on the anemic side. The blades are small, particularly near the hub, and don't have much curvature. The specifications list multiple bearing types, though the "Z" in the model number suggests it uses a mysterious bearing type called "Z-Axis."

Stock Fan Measurements
Voltage
Speed
SPL @1m
12V
2110 RPM
35~36 dBA
9V
1690 RPM
28~29 dBA
7V
1310 RPM
21 dBA
6V
1100 RPM
17~18 dBA
5V
910 RPM
14~15 dBA
Measuring mic positioned 1m at diagonal angle from the intake side of the fan.
Ambient noise level: 11 dBA.

The Fenrir's stock fan whines and buzzes terribly at full speed, but thankfully it undervolts well. At 9V, the noise level is still unbearable but it sounds much smoother and noticeably less whiny. At 7V it begins to hum slightly, but this too dissipates as the fan speed is turned down. At 6V and below, it is very smooth and quiet.

For users with motherboards that do not control the fan speed, PWM or otherwise, there is an included 4-pin to 3-pin adapter that can be used to slow the fan to about 1130 RPM, or the equivalent of 7V. It's not enough to make the fan quiet by SPCR standards, but it's better than nothing.


At 6V, the Fenrir's fan is quiet and has a benign acoustic profile.

Stock Fan Measurements: Cooler Master Hyper 212 Plus

Stock Fan Specifications
Manufacturer
Power Rating
4.32 W
Model Number
A12025-20CB-4BP-C1
Airflow Rating
76.8 CFM
Bearing Type
Sleeve
RPM Rating
2000 RPM
Corners
Open
Noise Rating
32 dBA
Frame Size
120 x 120 x 25 mm
Header Type
4-pin PWM
Fan Blade Diameter
114 mm
Starting Voltage
~ 4.6 V
Hub Size
47 mm
Weight
150 g
Data in green cells provided by the manufacturer or observed; data in the blue cells were measured.

The Cooler Master fan is far more intriguing unit with curved struts, a thick hub, and twisted blades. Though the model number is not the same, it appears to be the Blade Master 120 mm fan, as the appearance and specifications are identical.

Stock Fan Measurements
Voltage
Speed
SPL @1m
12V
2050 RPM
32~33 dBA
10V
1540 RPM
24 dBA
9V
1240 RPM
18 dBA
8V
920 RPM
13 dBA
7V
630 RPM
12 dBA
Measuring mic positioned 1m at diagonal angle from the intake side of the fan.
Ambient noise level: 11 dBA.

Like most stock fans, the Blade Master is loud and turbulent at full speed. It is very buzzy at 10V, and generates an audible hum as well as bearing chatter at 9V. It becomes quiet at about 8V, though its acoustic character remains the same as at 9V. At 7V it is effectively inaudible at one meter, but at closer distances it continues to hum in a fluttery manner as if the fan is slightly off-balance.


The Hyper 212 Plus stock fan becomes quiet at 8V.



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