When it comes to investing in artificial intelligence (AI), buying shares of graphics processing unit (GPU) manufacturers like Nvidia (NASDAQ: NVDA) and Intel (NASDAQ: INTC) can be a wise decision. Nearly every AI application requires these specialized chips to function, and buying stock in a GPU maker gives your portfolio direct exposure to the entire AI industry. Right now, Nvidia shares give you more-direct exposure to AI demand, but Intel’s discounted valuation and plans for growth make it an exciting story to watch.