ASUS Graphics Card GT640-1GD3-L Super Alloy Power blends select elements under ASUS exclusive formula, resulting in a 15 % performance increase, 2.5 times longer product lifespan and 350C cooler operation Dust-proof Fan efficiently dissipates heat while extending lifespan by 25% GPU Tweak provides real-time and intuitive tweaking 1GB DDR3 on board