1. What is a Power Supply Calculator?

Definition: This calculator estimates the minimum power supply unit (PSU) wattage required for a computer system based on component power consumption.

Purpose: It helps PC builders select an appropriately sized power supply to ensure system stability and allow for future upgrades.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_{supply} \) — Recommended power supply wattage
• \( P_{component} \) — Power consumption of each component
• 1.2 — 20% overhead factor for efficiency and headroom

Explanation: The calculator sums all component power requirements and adds a 20% buffer to account for power spikes, efficiency losses, and future upgrades.

3. Importance of Proper PSU Sizing

Details: An adequately sized PSU ensures system stability, prevents crashes, improves efficiency, and extends component lifespan.

4. Using the Calculator

Tips: Enter each component's typical power draw (check manufacturer specs). The "Other Components" field can include fans, RGB lighting, etc.

5. Frequently Asked Questions (FAQ)

Q1: Why the 20% overhead?
A: It accounts for power spikes, efficiency losses, and provides headroom for future upgrades or overclocking.

Q2: Where do I find component wattage?
A: Check manufacturer specifications or use online databases like Cooler Master's component database.

Q3: Should I round up to available PSU sizes?
A: Yes, choose the next available standard PSU wattage (e.g., if calculation is 520W, get a 550W or 600W PSU).

Q4: Does this account for overclocking?
A: No, add 10-20% more wattage if you plan significant overclocking.

Q5: How accurate is this calculator?
A: It provides a good estimate, but actual power draw depends on specific components and usage patterns.