Every self-respecting manufacturer produces video card that can attract attention by a great cooling system.
Inno3D released two cards: iShill GTX 560 Ti HerculeZ and iChill GTX 550 Ti HerculeZ, which use an alternative cooling system. HerculeZ Cooler consists of aluminum fins and heat-pipes.
Two fans are used by HerculeZ, which, according to the manufacturer, will last 3-6 times longer than standard. In addition, the number of blades on the fans (16), the enclosure construction , use additional slots for air flow. As a result - airflow is increased by 16-22%, depending on fan speed.