Power Supply Formula:
From: | To: |
Definition: This calculator estimates the recommended power supply unit (PSU) wattage based on your computer components' power consumption.
Purpose: It helps PC builders and upgraders determine the appropriate PSU wattage for stable system operation.
The calculator uses the formula:
Where:
Explanation: The calculator sums all component power requirements and adds a 20% buffer to ensure stable operation and account for power spikes.
Details: An adequately sized PSU ensures system stability, prevents crashes, improves efficiency, and allows for future upgrades.
Tips: Enter the wattage for each component. Typical values:
Q1: Why the 20% overhead?
A: It accounts for power spikes, aging components, and ensures the PSU operates in its most efficient range.
Q2: Where can I find my components' power consumption?
A: Check manufacturer specifications or use tools like ASUS PSU Calculator.
Q3: Should I round up to the nearest PSU wattage?
A: Yes, always round up to the next available standard PSU wattage (e.g., 550W → 600W).
Q4: Does this include future upgrades?
A: No, consider adding 10-20% extra if planning significant upgrades.
Q5: Is this calculator specific to ASUS components?
A: No, it works for any components but follows ASUS's calculation methodology.