Let's compare Nvidia's current AI dominance with SoundHound AI's growth potential. Which stock is the better buy right now? Artificial intelligence (AI) hardware giant Nvidia (NVDA -2.26%) doesn't have much in common with voice control software specialist SoundHound AI (SOUN -4.13%). Nvidia is one of the largest and most profitable businesses in the world right now, while SoundHound AI is just getting its feet wet in the world of big business. The Goliath-and-David relationship is almost comical. I mean, Nv ...