Cooler Dimension 83.3x69.8x56mm Weight 294g Fan Dimension 60x60x10mm Bearing System Ball Bearing Syetem Rated Voltage DC12V Speed(RPM) 4200 Noise Level(dBA) 32 Air Delivery(CFM) 13.88 Clip Attach Force(LBS) 19.5±3 Thermal Resistance(°C/W) 0.52 TI-S8640K

Cooler Dimension 83.3x69.8x61mm Weight 299.5g Fan Dimension 60x60x15mm Bearing System Ball Bearing Syetem Rated Voltage DC12V Speed(RPM) 4600 Noise Level(dBA) 40 Air Delivery(CFM) 25.89 Clip Attach Force(LBS) 19.5±3 Thermal Resistance(°C/W) 0.48 TI-S8640L

Cooler Dimension 83.3x69.8x76.8mm Weight 337g Fan Dimension 60x60x25mm Bearing System Two Ball Bearing Syetem Rated Voltage DC12V Speed(RPM) 6800 Noise Level(dBA) 45 Air Delivery(CFM) 36 Clip Attach Force(LBS) 19.5±3 Thermal Resistance(°C/W) 0.42 TI-S8640N