1. What is a PC Power Supply Calculator?

Definition: This calculator estimates the recommended power supply wattage for a PC based on the power consumption of its components.

Purpose: It helps PC builders and upgraders determine the appropriate power supply unit (PSU) for their system configuration.

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% safety margin for efficiency and headroom

Explanation: The total component power is summed and multiplied by 1.2 to account for power spikes, efficiency losses, and future upgrades.

3. Importance of Proper Power Supply Calculation

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

4. Using the Calculator

Tips: Enter the wattage for each major component. Typical values:

• CPU: 65-250W (check your processor specifications)
• GPU: 75-350W (check your graphics card specifications)
• RAM: 5-10W per stick
• Storage: 5-10W per SSD/HDD

5. Frequently Asked Questions (FAQ)

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

Q2: Should I round up to the nearest PSU wattage?
A: Yes, always choose a PSU with equal or higher wattage than the calculated value.

Q3: Does this include RGB lighting and fans?
A: Those should be included in the "Other Components" field (typically 5-10W per fan/RGB strip).

Q4: How do I find my components' power consumption?
A: Check manufacturer specifications or reputable review sites that measure power draw.

Q5: Is 80 Plus certification important?
A: Yes, it indicates power efficiency but doesn't affect the wattage calculation - it's about energy savings and heat reduction.