4x HDMI Ports enable multi-monitor productivity on up to 4 displays. Single-slot Design fits in small chassis & leaves room for additional PCIe devices. Passive Cooling keeps things quiet. Auto-Extreme Technology uses automation to enhance reliability. A 144-hour validation program puts cards through a series of stringent tests to ensure compatibility GPU Tweak II provides intuitive performance tweaking, thermal controls, & system monitoring. GPU Tweak II Monitor, tweak, & tune The ASUS GPU Tweak II utility takes graphics card tuning to the next level. It means that you can tweak critical parameters including GPU core clocks, memory frequency, & voltage settings, with the option to monitor everything in real-time through a customizable on-screen display. Advanced fan control is also included along with many more features to help you get the most out of your graphics card. 144−hour Validation Program “ Extensive” may be an understatement Each card must meet rigorous performance & reliability standards before it ships. Performance & stress tests are run with the latest chart-topping titles like Fortnite, League of Legends, Overwatch, & Player Unknowns Battlegrounds. We also carry out reliability trials that include a 144-hour stability test & a series of 3 D Mark benchmarking runs to ensure the card performs well when pushed to the limits.