Everyone upstairs answered irrelevant questions. In fact, the signature in the post spread like wildfire. A man played a joke on A card and N card, just to show their respective performance characteristics. Many people with black N cards, or maybe ATI people, made a soft advertisement (Intel put down the gun), and then everyone started to follow suit, scrambling to show their humor and understanding. In fact, this is the function of signature. . . Don't pay too much attention to the details.