Socket CPU CPU Compatibility Intel 1155/1156 Core i7 Extreme Supports all speeds Core i7 Core i5 Core i3 1366 Core i7 Extreme Supports all speeds Core i7 775 Core 2 Quad Supports all speeds Core 2 Duo Core 2 Extreme Pentium Dual Core Pentium D Pentium 4 Celeron D AMD AM3 Phenom II Supports all speeds Athlon II AM2+ Phenom II Supports all speeds Phenom Athlon FX Athlon X2 Athlon Sempron AM2 Athlon FX Supports all speeds Athlon X2 Athlon Dual-Core Opteron Opteron Sempron       Dimensions 90(L) x 127(W) x 135(H)mm Weight 360g Materials Pure Copper, Aluminum Fan Bearing Long Life Bearing Fan RPM Quiet Mode (with RC33P) 1,250 ~ 1,500rpm ± 10% Performance Mode (without RC33P) 1,500 ~ 1,950rpm ± 10% Noise Quiet Mode (with RC33P) 17 ~ 20dBA ± 15% Performance Mode (without RC33P) 20 ~ 25dBA ± 15% Input Voltage 12V Function PWM Control, Auto Restart     Color Gray Capacity 1g Temperature Stability -40°C ~ +150°C (-40? ~ +302?)   Powerful Cooling Performance Optimally designed aluminum fins effectively disperse heat away from the CPU via 3 composite heatpipes, while 92mm fan quickly cools the heatsink for stable operation of high performance CPUs.   V-Shaped Dual Heatsinks Two independent heatsinks are designed in a V-shape to minimize air resistance and optimize airflow, providing the best cooling performance. ? Heat Resistance : 0.126 ?/Watt   Direct Touch Heatpipe (DTH) Base DTH technology transfers the CPU’s heat directly to heatpipes, thereby minimizing heat resistance and maximizing cooling performance.   Composite Heatpipes By utilizing Composite heatpipes, the heat transfer capacity is enhanced by1.5 times compared to regular sintered-type heatpipes.   Versatile Compatibility CNPS7X LED accommodates a broad range of desktop CPU sockets. - Intel LGA1155 / 1156 / 775 / 1366 - AMD AM3 / AM2+ / AM2   High Performance Super Thermal Grease ZM-STG2M The high performance super thermal grease ZM-STG2M maximizes heat transfer from the CPU to the base of CNPS7X LED for intensified cooling performance.   Ultra Quiet 92mm Blue LED PWM Fan Switching noise-free 92mm PWM fan is incorporated for ultra quiet operation(20dBA only at Max. w/RC33P), and Blue LED Fan, included in a black translucent housing is for cool aesthetics.       - Cooler - A-type Clip Support & Pushpins (For LGA 1155/1156/775) - B-type Clip Support & Pushpins (For LGA 1366) - Resistor Cable (RC33P) - Thermal Grease (ZM-STG2M) - User’s Manual   Zalman affixes a Computer Noise Prevention System (CNPS) mark to all components used for noiseless computers.   Avoid inserting objects or hands into the fan while it is in operation to prevent product damage and injuries.   Do not ingest the Thermal Grease, and avoid its contact with skin and eyes. If contact is made with skin, wash off with water. If ingested or irritation persists, seek medical attention.   To prevent possible injuries, gloves must be worn while handling this product.   Excessive force exerted on the fan may cause damage to the fan and/or system.   Use and keep product away from reach of children.   Check the components list and condition of the product before installation. If any problem is found, contact the retailer to obtain a replacement.   During transportation of the system, the cooler must be removed. Zalman is not responsible for any damages that occur during the transport of a system.   Product design and specifications may be revised to improve quality and performance.   Enable PWM function in BIOS settings after installation.   Zalman Tech Co., Ltd. is not responsible for any damages due to external causes, including but not limited to, improper use, problems with electrical power, accident, neglect, alteration, repair, improper installation, or improper testing.