Nvidia CEO Jensen Huang attends the "Winning the AI Race" Summit in Washington D.C., U.S., July 23, 2025.Kent Nishimura | ReutersNvidia reported better-than-expected earnings and revenue on Wednesday, and said sales growth this quarter will remain above 50%, signaling to Wall Street that demand for artificial intelligence infrastructure shows no sign of fading.The stock, which is up 35% this year after almost tripling in 2024, slid in extended trading.Here's how the company did, compared with es...