PC Power Supply Calculator
Calculate the exact power requirements for your PC build. Get accurate PSU wattage estimates to ensure stable performance and avoid power-related issues.
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Select your components above and click "Calculate Power Requirements" to see your results.
Understanding Power Requirements
Learn how to choose the right power supply for your build
Each component in your PC has specific power requirements. The CPU and GPU are typically the biggest power consumers, but other components also contribute to the total.
- CPU: 65W - 350W depending on model and usage
- GPU: 75W - 450W for gaming cards
- Motherboard: 20W - 50W
- Storage: 5W - 25W per drive
- RAM: 5W - 15W per stick
It's recommended to have a PSU that can handle 20-30% more power than your calculated requirement. This ensures stable operation during peak loads.
Recommended PSU Wattage:
Calculated Power × 1.3 = Recommended PSU Wattage
- 80+ Bronze: Good for budget builds
- 80+ Silver: Better efficiency, mid-range builds
- 80+ Gold: Excellent efficiency, gaming builds
- 80+ Platinum: Premium efficiency, workstation builds
- 80+ Titanium: Maximum efficiency, high-end builds
- Non-Modular: All cables attached, lower cost
- Semi-Modular: Essential cables attached, some detachable
- Fully Modular: All cables detachable, cleanest builds
- Best for: Cable management and future flexibility
Frequently Asked Questions
Everything you need to know about power supply selection.
Ready to Calculate Your Power Needs?
Join thousands of PC builders who use our power calculator to ensure stable and reliable systems.