AeroCool's Shark Series of fans offer a "Shark Fin" blade design to generate high air pressure and high air flow. Not only that are are lots of blades, 15 in all. A normal fan has around 6-8 blades!

Features

Unique and stylish "Shark Fin" fan blades
15 blades for high air pressure
Fluid Dynamic Bearings for long life, 100000 hours!
Supplied with Voltage Reduction Cable, run s at 12V or 7V
Rubber and metal fan screws supplied
Max figures (at 12V) - 82.6 CFM, 26.5 dBA at 1500 RPM

The fans are standard 3-pin fans but adaptors are supplied with 3-pin to 4-pin molex connectors to increase compatibility. The fans are also supplied with a 7 volt resistor so the maximum RPM can be reduced by around 40% which will reduce the noise the fan produces as well as airflow.

Specifications

Dimensions - 120 X 120 X 25mm

Rated Voltage - 12V or 7V with VRC

Starting Voltage - <=9.0V or <=7.0V with VRC

Power Consumption - 3.6W or 1.56W with VRC

Rated Current - 0.30A or 0.13A with VRC

Speed - 1500 or 800 RPM±10% with VRC

Air Flow - 82.6 or 32.5 CMF with VRC

Air Pressure - 1.273 or 0.305 mm-H2O with VRC

Noise - 26.5 or 12.6 dBA with VRC

Weight - 117.9

MTBF - 100,000 hours