| Component | Average Wattage | | :--- | :--- | | | 65W - 150W | | CPU (High-End / Overclocked) | 150W - 250W+ | | GPU (e.g., RTX 4060) | 115W - 150W | | GPU (e.g., RTX 4080) | 320W - 450W | | Motherboard + RAM | 50W - 80W | | Storage (SSD/HDD) | 5W - 15W each | | Fans & RGB | 2W - 10W each |
You’ve just picked out that shiny new graphics card or a blazing-fast CPU. But before you click "buy," there’s a silent killer of PC builds lurking in the checkout cart: The Power Supply Unit (PSU). calculate pc watt
Take 3 minutes. Use PCPartPicker. Add 30-50% headroom. Buy a reputable brand. | Component | Average Wattage | | :---
Use the OuterVision Power Supply Calculator (standalone version). It lets you factor in capacitor aging, overclocking, and how many USB devices you have plugged in. The DIY Method (Pen & Paper) If you want to understand the math, here is the average power draw for modern components: Use PCPartPicker
The secret sauce is simple:
Your PC will run quieter, crash less, and be ready for future upgrades. And honestly? Sleeping well knowing your house isn't going to trip a breaker is worth the extra $20.
Look for the number. That is the power the CPU and GPU actually use. If a PSU says 600W total but only provides 300W on the +12V rail, throw it away. Stick to brands like Corsair, EVGA, Seasonic, and be quiet! The Bottom Line Calculate your wattage before you buy the power supply.