Does not generate noise or vibration in Silent Mode.Pure Copper base material ensures excellent heat dissipation.Intel Pentium 4 (Socket 478), AMD Duron/Athlon/Athlon XP (Socket 462), and Sempron/AMD64 (Socket 754/939/940) compatible design for broad compatibility. (To use this product on socket 775, ZM-CS1 must be purchased separately.)92mm fan inside the FHS maximizes airflow and makes installation easier.Adjustable fan speed controller (FAN MATE 2) enables control of noise and fan performance.