Is Nvidia stock a good buy now?

$NVIDIA Corp(NVDA)$ The fabless chipmaker pioneered graphics processing units, or GPUs, to make video games more realistic. It's expanding in AI chips, used in supercomputers, data centers, drug development, and driverless cars.For example, it will supply the chip that acts as the "brain" for the Nio (NIO) ET7, which will be Nio's first autonomous driving model when it arrives in Q1 2022. And Nvidia already supplies Amazon (AMZN) Web Services with chips for data centers. Last September, Nvidia unveiled new GeForce gaming GPUs, touting a generational leap in performance. In April, Nvidia unveiled its first CPU, called Grace, which uses chip designs from U.K.-based Arm for high-end computing and AI applications. Nvidia's proposed $40 billion Arm takeover is under scrutiny in the U.K., with a ruling expected by month end. Nvidia's GPUs act as accelerators for central processing unit, or CPUs, made by other companies. With its own CPU, Nvidia will offer a more complete system for data centers, directly challenging processor giants Intel (INTC) and Advanced Micro Devices (AMD).$NVIDIA Corp(NVDA)$