Features: 80 x 80 x 25mm ( 3.15 x 3.15 x 1 in. ) | Voltage :12V | Current: 1.00A | Airflow: 85.2CFM | Power: 12W | Speed: 6500RPM | Connector: 4PIN. Great fan and just as loud as all the other ones when the speed is controlled. Below 2000 RPM they push much more air than silent fans at the same speed with no noticiable difference sound level. High Speed: This model is designed to maximize airflow and can be too loud at speed for some applications . The reverse design of fan frame makes the air volume more concentrated and the air volume is farther away. The fan PWM version is for high efficiency for cases, radiator and CPU cooling as well as other applications that require both extended PWM for speed control. This fan have high air pressure allowing for a direct and focused airflow making them for the densely packed a radiator. With the addition of the Ball Bearing, a longer lifespan and stability is possible. brand new and high quality Specifications: Model: KZ8025B012U Size: 80x80x25MM Voltage: 12V Current: 1.00A Power: 12W Rotating speed: 6500RPM Air volume: 85.2CFM Noise: 39DBA Operating environment: - 20~50 ° Service life: 50000 hours Package Includes: 1PC x KZ8025B012U Cooling Fan note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!