ARCTIC Freezer i32 CO - CPU Cooler with 120 mm PWM Fan for Intel with New Fan Controller Made in Germany and PWM Sharing Technology(PST) - Dual Ball Bearing for Continuous Operation THE NEW PRICE-PERFORMANCE CHAMP: Thanks to the better cooling performance of 320 Watts, the Freezer i32 is the perfect gadget for PC enthusiasts looking for a keen solution for the CPU cooling. IMPROVED COOLING PERFORMANCE: Despite lower weight and size, we could improve not just the manufacturing quality but also the thermal performance due to a fully automatic production process. FAN CONTROLLER MADE IN GERMANY: The ARCTIC F12 fan is well known for high airflow at a comfortable noise level and thus this cooler won't be disturbing even at maximum CPU load. The real improvement is the motor and controller. Our German engineers made this fan work at lower speed when performance is not needed. Often motherboards don't provide PWM signals below 40% and thus make coolers unnecessary loud - not so with the Freezer i32 CO. ENHANCED BEARING FOR CONTINUOUS OPERATION: "CO" stands for Continuous Operation and makes the cooler suitable for PCs with non-stop operation like servers. The Japanese dual ball bearing used in the "CO" fan reduces rotational friction considerably, is significantly less sensitive to dust and high temperature and hence up to 5 times more durable than other bearings. OPTIMAL COMPATIBILITY: Intel 2011, 1155, 1150, 1156, 1151 / 120mm fan.