[Draenin]

Check your video settings like Antialiasing and Anisotropic Filtering and so on to make sure that's not slowing it. Also, check to make sure vsynch is off. Your card is clocked rather high to begin with, so you may want to take that down a bit. My current card has issues with resources sometimes when I have it clocked at default (500 MHz core and mem) so that might be something influencing it. There's a possibility that your card was clocked so high by default that it's overworking itself.