These coolers are made out aluminum and feature a copper base. One of the special things is that they ship with two fans.
The Silent version’s double fan quietly and efficiently brings the temperature down. The low decibel (19dB), high volume (30.8 CFM) fans are 92mmx92mmx25mm and run at an ultra-quiet speed of 1800 RPM. The dual fan is a unique concept that not only cools down the radiator, but the added blow down effect also cools down the heatsink directly above the CPU.
Unlike the Silent version of this series, the PWM version has a dual 92mm×92mm×25mm adjustable speed fan setup which brings the temperature down according to your needs, The fan ranges in speed from 800~2500RPM, with a maximum volume throughput of 51.3CFM. The Fan puts out 34dB maximum at full revolutions. The entire heatsink (both versions) keeps a relatively low profile and only weighs in at 507grams, making it safe and light enough to pose no danger to your Intel CPU. (Designed to comply with weight regulations of 550 grams on Intel CPU’s)