Nvidia just announced plans to invest up to $100 billion in OpenAI to help build AI data centers. The deal between the two companies will create 10 gigawatts of AI data centers using Nvidia's chips (which OpenAI needs for the computer to power its AI). This deal sounds pretty sweet to Wall Street — Nvidia's stock jumped 4% after it was announced. But it's also a lot of money — and gigawatts. For comparison, the 10 gigawatts Nvidia plans to invest are as much as it expects to ship all year.But it's also jus ...