1852 ET - Advanced Micro Devices posted better quarterly results than Wall Street expected, with both profit and sales coming in above consensus estimates. But investors were focused elsewhere: on SpaceX's disclosure that it would no longer buy AMD's chips, and instead build exclusively on chips from its rival Nvidia. "We think the Blackwell architecture is the best architecture," SpaceX CEO Elon Musk says during an earnings call. AMD shares slid 8.9%, to $472.70 in late trading.