LSV (Ultra Low Speed at Low Voltage) Fan
The standard fan speed vs. input voltage curve is almost a linear relation, like the blue line in the picture. For example, the fan speed of a 70 x 70 x 20 mm fan at 12 V is 6000 RPM; its 3000 RPM at 6 V. When we use this fan on a motherboard with PWM fan speed controlled function, the hardware monitor detects the system is idle, then supplies 6 V to the fan, the fan speed is 3000 RPM, but we do not need a high speed (3000 RPM) and louder fan in idle mode, because the CPU temperature is so low. How can we get a quiet system in idle mode and cool system in stress mode?
The answer is LSV technology
The LSV fan provides a non-linear fan speed vs. input voltage curve, like the red line in the picture. At 12 V (Stress mode), it provides the same cooling capability (6000 RPM), at 6 V (Idle mode), the fan speed is only 1500 RPM!! Now, you can enjoy the quiet and cool system with LSV technology.