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Though 20mm thick, GS120 pushes the same airflow as normal 25mm deep fans. You can save 5mm of space, which may matter when you try to add a side panel fan and you already have a tower CPU heatsink. Or, when your tower CPU heatsink fan slightly blocks your memory slots, you definitely need this 5mm of space. That's when GS120 is designed for.
20mm of depth allows for more space inside your case. You can easily mount a large, tall heatsink if you want.
With a 4-pin PWM connector, GS120 is able to lessen the fan speed when the system is getting idle.
When your system is not running at full load, you can easily use this low-noise adapter to reduce the input voltage to reduce the fen speed.
Four rubber buckles are used for the installation. The rubber material not only makes the installation quite easy but also absorbs vibration to the maximum so as to avoid the noise made by normal metal screws.
The cable is made of PTFE (PolyTetra Ruoro Ethylene), which withstands really high temperatures and heavy duty usage to ensure a long lifespan.
Two rubber cable ties are included to route the fan cable to keep everything in place inside the case. This provides a clean looking case and also improves the ventilation.