What Is the 80% Power Supply Rule and Why Is It Important?
Learn about the 80% power supply rule to improve PSU efficiency and lifespan by limiting usage to 80% of maximum capacity.
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The 80% power supply rule advises running your power supply unit (PSU) at no more than 80% of its maximum capacity to ensure efficiency and longevity. For instance, if you have a 500W PSU, aim to use 400W to prevent overheating and prolong the PSU's lifespan.
FAQs & Answers
- Why should I run my PSU at 80% capacity? Running your PSU at no more than 80% of its maximum rated capacity helps prevent overheating and extends the lifespan of the power supply unit.
- What happens if I exceed the 80% power supply rule? Exceeding 80% usage can cause your PSU to operate less efficiently, generate more heat, and increase the risk of premature failure.
- How do I calculate 80% of my PSU's wattage? Multiply your PSU's maximum wattage by 0.8. For example, a 500W PSU running at 80% should be limited to 400W usage.