This Scythe SY1225DB12SL Case Fan runs at a slow 500 RPM for the least noise possible while still pushing 24.50 CFM. Using dual ball bearings, this extends the life of its fan by up to 10x the life of conventional fans. The new Slip Stream 120 DB fans use 2 high precision ball bearings instead of a plain bearing. As a result of the small contact surface between the tread and balls, the friction and the wear of the bearing could be reduced significantly. This benefits the durability and reliability of the fan, which is reflected in an excellent MTBF of 350,000 hours. Another advantage of the new ball bearing is shown in a lifetime of smooth running together with a practically noise-free fan operation in marked contrast to plain bearing models. Based on its predecessors, the Slip Stream 120 DB Series inherits the smaller fan hub resulting in a larger flow area and an increased air flow at the same speed compared to fans with conventional hubs. Accessories are included to give users the option to dampen the vibration. An enclosed adapter allows direct connection to the power supply. The cable management is simplified thanks to an extra long 50cm cable which eliminates the need for extensions.