Choosing a power supply unit (PSU) with a wattage rating that exceeds the current power consumption of a computer’s components is a common practice. This not only ensures that all current components receive adequate power but also provides additional headroom for potential future hardware upgrades, which may require more power. Without this extra capacity, adding more powerful components later might necessitate replacing the PSU with a higher-rated one. For this reason, it is often recommended to select a PSU with more wattage than the sum of the components' power requirements.
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Why is having a power supply with higher wattage important for future upgrades?
How do I calculate the wattage needs of all my computer components?
What could happen if I choose a PSU with too low wattage?