ASUS exclusive Voltage Tweak technology for up to 50% performance 5.8 oz copper rod and a tuning-fork shaped heatsink are with 22% more heat dissipation surface area to disperse heat efficiently Gigantic 1GB GDDR5 memory - on-board memory for the best gaming experience & the best resolution PCI Express 2.1 support ASUS Splendid - watching movies on PC is as good as on top-of-the-line consumer television ASUS Gamer OSD - real-time overclocking, benchmarking and video capturing in any PC game ASUS Smart Doctor - your intelligent hardware protection and powerful overclocking tool Radeon HD 5770 40nm GPU - less power consumption & more efficient transistor Microsoft DirectX 11 support - bring new levels of visual realism to gaming on the PC and get top-notch performance Microsoft Windows 7 support - enable PC users to enjoy an advanced computing experience and to do more with their PC ATI CrossFireX technology - get up to 1.8X of a graphics performance boost in dual mode Support large & high resolution - dual-link DVI able to drive the industry's largest & highest resolution flat-panel displays up to 2560x1600 Native HDMI Native dual-link DVI-I Native D-Sub Single-link DVI (via HDMI to DVI adapter)