Prolimatech Genesis CPU Heatsink: Retaking the Crown

Cooling
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Prolimatech Red Vortex 14 LED Fan Measurements

Specifications: Prolimatech Red Vortex 14 LED
Manufacturer
Prolimatech
Power Rating
2.4 W
Model Number
RL4R S1402512L-3M
Airflow Rating
87 CFM
Bearing Type
Sleeve
Speed Rating
1000 ±100 RPM
Corners
Open
Noise Rating
18.1 dBA
Frame Size
140 x 140 x 25 mm
Header Type
3-pin
Fan Blade Diameter
130 mm
Starting Voltage
4.7 V
Hub Size
44 mm
Weight
140 g
Data in green cells provided by the manufacturer or observed; data in the blue cells were measured.

The Red Vortex is a sleeve bearing fan with a nominal speed rating of 1000 RPM, so it should be fairly quiet. The design is fairly ordinary, with straight struts and gently curved blades lacking sharp corners. The fan is light for a 14 cm model, and its hub is a bit large. Unlike some 14 cm fans, it lacks 12 cm mounting holes which may make it incompatible with some cases and heatsinks.

Fan Measurements: 2 x Prolimatech Red Vortex 14 LED
Voltage
Avg. Speed
SPL@1m
12V
880 RPM
21~22 dBA
9V
750 RPM
17 dBA
7V
620 RPM
13 dBA
6V
530 RPM
12 dBA
Measuring mic positioned 1m at diagonal angle from center of heatsink.
Ambient noise level: 10~11 dBA.

The acoustics of the Red Vortex fans were impressive. The pair droned at 12V and had a bit of a hum at 9V, but were otherwise smooth throught the speed range. At 7V they became extremely quiet, and were practically inaudible at 6V. Overall, they're a huge improvement over the nameless fan sent by Prolimatech with the original Megahalems.


The Red Vortex fans became pretty quiet at about 9V. A slight hum was noted at ~120 Hz.

Cooling Results

Fan Voltage
SPL@1m
°C Rise
CPU
NB*
VRM*
Fans: 2 x Prolimatech Red Vortex 14 LED
12V
21~22 dBA
33
25
20
9V
17 dBA
34
27
20
7V
13 dBA
37
31
21
6V
12 dBA
39
37
23
Reference Fans: 2 x Noctua NF-P14
12V
30 dBA
34
24
16
9V
22 dBA
35
28
20
8V
19 dBA
36
30
24
7V
16 dBA
37
31
27
6V
13 dBA
39
35
28
°C Rise: Temperature rise above ambient (21°C) at load.
*NB and VRM temps taken with an IR thermometer from the hottest portion of each heatsink.

The Genesis' performance was stellar, keeping the processor's thermal rise above ambient under 40°C, even at the virtually inaudible 12 dBA level. It did a fair job of cooling the Northbridge and VRM heatsinks as well. The Red Vortex fans performed noticeably better than our reference Noctuas, beating them by a couple of degrees at the 21~22 dBA level. The difference was greater at 13 dBA when you consider the Prolimatech fans provided superior cooling for the Northbridge and VRM heatsink by margins of 4°C and 7°C, respectively.



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