Gigabyte GeForce GTX 1660 OC 6GB GDDR5 VR Ready Graphics Card WINDFORCE 2X cooling system features 2x 90mm unique blade fans, alternate spinning fan, a composite copper heat pipe direct touch GPU and 3D active fan functionality, together delivering an effective heat dissipation capacity for higher performance at lower temperatures.Features- 1830 MHz Boost Clock (Reference Card is 1785 MHz) - Powered by GeForce® GTX 1660- NVIDIA Turing™ architecture and GeForce Experience™- Integrated with 6GB GDDR5 192-bit memory interface- WINDFORCE 2X Cooling System with alternate spinning fans- 90 mm unique blade fans- Protection back plateAlternate SpinningThe GIGABYTE “Alternate Spinning” is the only solution that can solve the turbulent airflow of adjacent fans. Since the adjacent fans rotate in the same direction, the airflow direction is opposite between the fans, which will cause turbulent airflow and reduce heat dissipation efficiency. GIGABYTE turns the adjacent fans in the opposite direction, so that the airflow direction between the two fans is the same, reducing the turbulence and enhancing the airflow pressure.Unique Fan BladeThe airflow is spilt by the triangular fan edge, and guided smoothly through the 3D stripe curve on the fan surface, effectively enhancing the airflow.3D Active FanThe 3D Active Fan provides semi-passive cooling, and the fans will remain off when the GPU is in a low load or low power game. It allows gamers to enjoy gameplay in complete silence when the system is running light or idle.