ROG Strix GeForce GTX 1080 Ti gaming graphics cards are packed with exclusive ASUS technologies, including all new MaxContact Technology that is 2X more contact with GPU for improved thermal transfer, and Patented Wing Blade IP5X Certified Fans for maximum airflow and longer fan lifespan. While ASUS FanConnect II features 4 pin, hybrid controlled headers connected to system fans for optimal system cooling. ASUS Aura Sync RGB LED synchronization enables a gaming system personalization and VR friendly HDMI ports let gamers easily enjoy immersive virtual reality experiences. ROG Strix GeForce GTX 1080 Ti also has GPU Tweak II with XSplit Gamecaster that provides intuitive performance tweaking and instant gameplay streaming. ASUS FanConnect II features two 4 pin, hybrid controlled headers that can be connected to both PWM and DC system fans for optimal system cooling. The connected fans reference both the GPU and CPU, operating automatically based on the one with the higher temperature. A comprehensive set of tuning options allow you to tune fan speeds for efficient cooling.