So my brand new sound card, Xonar DX, is picking up microphone buzz when I'm playing a game. So I had this idea for a solution. The card is set as far away from the video card as possible, but it's still picking up interference from the video card. Is there a way to shield the sound card from the video card? Is there a pseudo-card I can buy that's basically that's the size of the video card that dampens the electromagnetic stuff given off by the video card? Maybe a small blank of lead that fits into a pci slot. If such a thing doesn't exist, would it work if it did?