How Important Is the Power Supply (PSU) When Building a PC? Share January 21, 2021 Dm4r Technology The power supply (PSU) is a critical part of any PC. It powers all the components in your PC, and a bad or faulty one can bring everything down. Here’s what to look for in a power supply while putting together a PC. Read This Article on How-To Geek › Source : How Important Is the Power Supply (PSU) When Building a PC?