Total Power Consumption Formula:
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Definition: This calculator estimates the total power consumption of a computer by summing the wattage of all its components.
Purpose: It helps PC builders and users determine the power requirements of their system to select an appropriate power supply unit (PSU).
The calculator uses the formula:
Where:
Explanation: The calculator simply sums the wattage of all PC components to determine the total system power draw.
Details: Accurate power calculation ensures you choose a PSU with sufficient capacity, improves system stability, and prevents overloading.
Tips: Enter the wattage for each component (CPU, GPU, RAM, storage, and other peripherals). All values must be ≥ 0.
Q1: How do I find my components' wattage?
A: Check manufacturer specifications or use online databases like PCPartPicker for common components.
Q2: Should I add extra capacity to the calculated total?
A: Yes, it's recommended to add 20-30% headroom for efficiency and future upgrades.
Q3: Does this include peak power draw?
A: No, some components may have higher peak power requirements than their rated TDP.
Q4: What about cooling fans and RGB lighting?
A: Include these in the "Other Components" field (typically 5-15 watts total).
Q5: How does this relate to PSU selection?
A: Choose a PSU with wattage at least 20% higher than your calculated total for optimal efficiency.