Noticed recently that my EVGA G5 850 has coil whine that comes and goes. Is this normal? Should I be worried about psu failure? Previous EVGA power supplies didn't not whine. I had to replace my P2 650 with an 850 because of new gpu upgrade. The P2 850 were either out of stock or the price was double than the normal price. So I found the G5 850 in stock for regular price and got it, hoping it would be as good at the P2 power supplies that I own. (have 2 other computers with the P2 on them and no coil whine at all). Thank you for any help. Don't want my new graphics card ending up being an expensive paperweight.