1. What is the ASUS Power Supply Calculator?

The ASUS Power Supply Calculator helps determine the appropriate wattage for your PC's power supply unit (PSU) based on your components' power requirements with an additional 20-30% headroom for efficiency and future upgrades.

2. How Does the Calculator Work?

The calculator uses the ASUS methodology:

Where:

• \( P_{total} \) — Recommended power supply wattage
• \( \Sigma P_{components} \) — Sum of all component power requirements
• 1.2 to 1.3 — Safety margin (20-30% headroom)

Explanation: The 20-30% headroom accounts for power spikes, efficiency losses, and future upgrades.

3. Importance of Proper Power Supply

Details: An adequately sized PSU ensures system stability, prevents crashes, improves efficiency, and allows for future component upgrades.

4. Using the Calculator

Tips: Enter each component's power consumption in watts. Check your component specifications for accurate values. The calculator adds 25% headroom by default.

5. Frequently Asked Questions (FAQ)

Q1: Why add 20-30% headroom?
A: Headroom accounts for power spikes, efficiency losses, capacitor aging, and future upgrades.

Q2: Where do I find my components' power requirements?
A: Check manufacturer specifications for CPU, GPU, and other components. TDP values can serve as estimates.

Q3: Is higher wattage always better?
A: While higher wattage provides headroom, excessively large PSUs may operate less efficiently at low loads.

Q4: What about 80 Plus certification?
A: 80 Plus ratings indicate efficiency but don't affect wattage requirements. Choose both appropriate wattage and efficiency.

Q5: Should I consider overclocking?
A: If planning to overclock, add additional headroom (typically 10-20% more than calculated).