1. What is a Power Consumption Calculator PSU?

Definition: This calculator estimates the energy consumption of a power supply unit (PSU) based on its power draw and usage time.

Purpose: It helps users understand and estimate electricity usage and costs for computer systems or other electrical devices.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( E \) — Energy consumption (kilowatt-hours)
• \( P \) — Power draw (watts)
• \( t \) — Time duration (hours)

Explanation: The power in watts is multiplied by time in hours, then divided by 1000 to convert watt-hours to kilowatt-hours (kWh).

3. Importance of Power Consumption Calculation

Details: Understanding power consumption helps with energy cost estimation, sizing UPS systems, and evaluating energy efficiency.

4. Using the Calculator

Tips: Enter the power draw in watts and usage time in hours. For continuous usage, enter 24 hours per day. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I find my PSU's power draw?
A: Check your power supply's wattage rating or use a wattage meter for actual measurements.

Q2: Does this account for PSU efficiency?
A: No, this calculates input power. For output power, multiply result by PSU efficiency (typically 80-90% for good units).

Q3: How can I estimate my electricity cost?
A: Multiply the result by your electricity rate (e.g., $0.12 per kWh).

Q4: What's a typical gaming PC power consumption?
A: A mid-range gaming PC might draw 300-500W under load, while high-end systems can reach 800W+.

Q5: Should I use peak or average power?
A: For cost estimation, use average power over time. For sizing PSU/UPS, use peak power.