After being asked repeatedly what hardware someone needs to run Power BI Desktop, I've done this video, it is by no means a definitive guide, but it is based on my experiences of Power BI over the last five years.
Avoid watching the video if you want by checking the information below
CPU - Min 8 thread
RAM - Min 8GB, I recommend 16GB+ though
Storage - NVME storage is best, speed is everything if you have to open and save large files