From the actual test results, "Cooling Fan" to time the most low-grade and most amount of wind run better than stand fan noise to appear bigger, or is it that most people criticized the local fans, the dead of night, If you open this fan in the bedroom, it is estimated will sleep a relatively large impact. Noise control, stand fan is undoubtedly better, "Cooling Fan" high noise will limit its use scene, after all, in need of some quiet environment, this fan may not fit for use. Stand fan most low wind noise level is 577, most high amount of wind noise level is 640, "Cooling Fan" most low wind noise level is 748, most high amount of wind noise level is 831.