I just bought a Gtx 670 video card and noticed it emits a slight buzz or hum from the cards. I believe this is coil whine and am wondering if anyone else has noticed this with their Gtx 670 cards? My case is ultra quiet and this sound is similar to fluorescent light bulb humming but quieter. Some websites say Gtx 670 and 680 ref models do this and it is a common issue. My 6970 lightning does not buzz at all. I am considering returning the Gtx 670, but I have to say it is a very slight sound. The fix most people suggest is vsyncing the card. This seem to quiet the buzz in some cards. My card is a beast but, to tell the truth, so is the 6970 I swapped it out for. If I return the card, what are the chances I will get one with the same issue?