NVIDIA is pushing a new all-in-one AI chip that could sideline Intel and AMD, great for NVIDIA and Microsoft but bad for rival chipmakers and everyday PC owners.

• NVIDIA's new RTX Spark chip combines the CPU, graphics, and AI hardware into one piece of silicon that can run big AI models on a thin laptop.
• Intel's share of the data center chip market crashed from around 68% to 6% in four years while NVIDIA's jumped to 86%, pushing NVIDIA near a $5 trillion value.
• When the chip was unveiled, NVIDIA stock rose while AMD, Intel, and Qualcomm shares fell.
• NVIDIA keeps about 75 cents of profit on every dollar, leaving laptop brands like Dell and HP with just a few percent as they assemble boxes they don't really control.
• Microsoft is steering Windows toward chips built on NVIDIA's design, and older machines that fall short get locked out of new AI features.

Outlook: As software gets written for these AI-first machines, older PCs will fall behind and buyers will be pushed to upgrade into NVIDIA and Microsoft's locked ecosystem.