Hi, I have a problem with the SOC 580 GTX (GV-N580SO-15I). Well, when playing from the graphic cards come with a loud squeaking / hissing noises, especially in the case of games - Mass Effect 2, Dragon Age 2, The Witcher. The sound of it after a while it becomes quieter, but before that is really loud. During normal operation on the computer does not come with the card it sounds. Is this normal for this card, or proves that he has a defect. The sound is certainly comes with the card, because it appeared after replacing the video card. I use nvidia drivers 270.61. Sorry from my english.