- Compatible with Intel’s Dual Core Pentium, Pentium4, and Celeron D for Socket 775.
- Low-noise 92mm PWM Control fan for automatic control of the fan’s RPM according to CPU temperature.
- Optimized heatsink layout composed of pure copper for maximum heatsink efficiency.
- Innovative, patented, and curved heatpipe design for a heat transfer capacity of up to six heatpipes with just three.
- 0.2mm ultra-slim fins for minimized weight and reduced airflow resistance.
- Maintains minimum RPM even when Duty signal supplied by M/B is below 30%.
- Operates in silence by preventing extreme RPM during initial booting.

CNPS9500AT for Intel Socket 775 (Celeron D Pentium 4 Pentium D Core 2 Duo High Performance Ultra Quiet CPU Cooler. This cooler features all the innovative designs and technologies found on our popular CNPS9500 LED CPU cooler to provide optimal cooling performance and quite operation. As the official launching partner for NVIDIA latest enthusiast platform, we enhanced several features of current CNPS9500 model to be optimized for the AM2.

Mfr Part Number: CNPS9500AT
Low-noise 92mm PWM Control fan for automatic control of the fan’s RPM according to CPU temperature
Optimized heatsink layout composed of pure copper for maximum heatsink efficiency
Innovative, patented, and curved heatpipe design for a heat transfer capacity of upto six heatpipes with just three
0.2mm ultra-slim fins for minimized weight and reduced airflow resistance
Maintains minimum RPM even when Duty signal supplied by M/B is below 30%
Operates in silence by preventing extreme RPM during initial booting
Compatible CPUs: Intel Socket 775 CPU - Celeron D/ Pentium 4/ Pentium D/ Core 2 Duo
Main Function: PWM Control Function and Auto Restart Function
Base Material: Pure Copper
Thermal Resistance: 0.12 ~ 0.16°C/W
Dissipation Area: 3,698 cm2
Bearing Type: Dual Ball Bearing
Rotation Speed: 1,300RPM ±30% ~ 2,650RPM ±10%
Noise Level: 18.0 ~ 27.5 dB ±10%
Input Voltage: 12 V

Fantastic cooling fan!
Extremely smooth and quiet operation, you practically won’t even know it’s running.
Excellent cooling capabilities; easily keeps my Intel D 925 nice and cold.
Install wasn’t very hard, even for a computer noob like me.
It looks awesome! I wish I had a clear case to show this baby off!

Zalman CNPS9500 AT - The best S775 Cooler
Pros: EXTREMELY good cooling of even the hottest S775 CPUs, Very Quiet, Uses the PWM fan connector properly, typical Zalman quality and finish.

Cons: Heavy, Bulky, difficult to install.

Wow, is this thing strong! Very few coolers can match this one for performance AND it’s nice and quiet as well. It cools even an extremely hot Pentium D 820 effortlessly. It is very bulky and heavy, plus you have to remove the motherboard to install it, but if you want maximum cooling for your S775 CPU look no further.