Andrej Karpathy just told a room of investors the CPU is finished as the main chip. Nvidia hit $5 trillion last Friday. Intel sits at $425 billion. That gap exists because Intel owned the chip that stopped mattering. Karpathy is saying it's about to happen one more time. This is the third time the main chip has been demoted in computing history. The first two flips ate the companies that owned the old chip. In 1980 floating point math was the add-on. Engineers and scientists bolted an Intel…