I had a Ti 4600 go up in smoke on me after about 4 months of operation , dont worry about it , it happens , just the way electronics are , parts can fail at anytime , I really wish the companys would take more time to burn the cards in and do extensive testing , but since these are considered class 1 consumer products they most likely only do a visual inspection of the card to make sure all parts are where they should be and pass it on .