Yes, I do have a Corsair 650wtt psu but it seems like the card is making that noise and not the psu because whenever I play certain games like even chess titans for instance when I move the chess board around it makes the squealing noise but when I play games like Bad Company 2 it doesn't make the noise at all.
Like I said Corsair is looking into the issue. Go to thier forum to check it out. I would direct you to the link I was talking about but it isn't reappearing. It seems to be a Corsair PSU and Sapphire Gpu issue where the power is being used the wrong way on the card.