Investors should get used to extreme competition in the artificial intelligence (AI) arena. According to analysts at Bank of America, artificial intelligence will add $15.7 trillion to the global economy by the end of this decade from both increased revenue opportunities and lower costs. Two chipmakers leading the charge are Nvidia (NASDAQ: NVDA), which has first-mover advantage, and Advanced Micro Devices (NASDAQ: AMD), the scrappy challenger that more recently came out with its MI300 Instinct AI accelerators.