What is the best power supply for a gaming PC? A quality power supply can make an enormous difference to the ease of use of your machine. The Power Supply Unit (PSU) converts electricity from the power outlet into usable power for your PC components, ensuring they get the power they need to function.The best power supply for most is EVGA 1000GT while a quiet option go for the be quiet! Pure Power 12. For more options see the list below and be sure to check out the how to choose and FAQ sections for advice on what to look for and answers to all your power supply questions. Continue reading Best power supply 2025MORE FROM PCGAMESN: Best graphics card, Best gaming PC, Best SSD for gaming