ASUS Radeon HD5870 1 GB GDDR5 PCI-Express Graphics Card EAH5870/G/2DIS/1GD5/V2 Radeon HD 5870 ASUS Exclusive S.T.A.L.K.E.R. Bundle Overclock 868 MHz Copper Fins and Extra Large Fan for 17% better cooling performance Voltage Tweak boosts up to 50% performance gain