Nvidia surprised Wall Street with how big the data center opportunity could be over the next five years.Nvidia's (NVDA -1.10%) powerful chips are used in almost every data center and cloud service provider for the most advanced artificial intelligence (AI) workloads. Its stock has rocketed over 30,000% over the last 10 years, making Nvidia the most valuable company in the world with a market cap over $4.6 trillion at the time of writing.But Nvidia's management mentioned one number on the company's last earn ...