Summary: Not long after using this card to replace a defective one in my desktop, it started making "whirring sounds" on start-up. I have determined the noise is from a fan that is not spinning due to a restriction on the card itself. It finally starts running after about 30 seconds. I sent them an email and was told, "if it works, don't worry". I won't worry, and I won't purchase another Zotac product.