since i am a value shopper.

everyone is doing crap FPS in dalaran and wintergrasp. if you are sure it is something wrong with your system i would go to best buy and get the 2 4850's or 4870's and try it out in your system. if the problem is fixed than great, end of thread. if you still have the problem or a small increase than you can always return those cards and get your money back. free troubleshooting. just say your system doesn't support ati, bye bye.

here is another free trouble shoot for you. switch your monitors around. get rid of one 20". put your main on one card with the 20" and your alts on the other card with the 24"...see if that helps.