Thermaltake ISGC-300 Side Flow Heatpipe CPU Cooler with 4pin PWM Fan Core i7 Ready - CLP0539 ISGC Fan Technology; The pure white 120mm VRFanTM which is designed by the Thermaltake to pursuit noiseless environment. Therefore Thermaltake design to reduce the turbulence and the friction between air and fan Hydro Dynamic Bearing (HDB) Technology :Improved fan operation stability and noise production for extended overall product durability The Ultimate Copper+ Base Architecture x 4 Heatpipes. Mirror Copper Base deliver 100% touch between CPU and Cooler. Meanwhile, 4 Cooper Heatpipes create the best heat transferring. Individual 33 Sawtooth Tower Fins