The new deal with OpenAI brings AMD a step closer to catching up with Nvidia in the data center business, but there's a catch.Advanced Micro Devices (AMD -7.78%) supplies chips for some of the world's most popular consumer electronics, from Sony's PlayStation 5 to Tesla's EV infotainment systems. But investors are currently focused on its data center business, where it sells a lineup of graphics processing units (GPUs) specifically designed to power artificial intelligence (AI) development.Nvidia has domina ...