PSU Wattage Calculator for PC Power Supplies

Our Power Supply Calculator tool helps you find the right PSU for your PC. Use it to calculate your PC’s wattage and choose the right PSU.

Use our Wattage Calculator to determine the ideal PSU for your system. Enter your components to receive accurate wattage recommendations.

請在以下的欄位中輸入您在系統中使用、或計劃使用的所有系統元件。 為了計算電源供應器的正確瓦數，我們根據製造商的資訊，使用您配置的各元件的峰值功耗來計算。 您可以儲存您的配置。 若有需要，可隨時載入該配置。 USB 3.2 Gen. 2 用於電力傳輸。 計算出的最大需求瓦數可能與您系統的實際功耗有差異。 我們的計算值將容許您的所有元件能在滿載的狀態下運作。 在電源供應器的負載介於50% ~ 80% 時，將可達到最高效率，讓您的系統處於最佳運作狀態。 由於部分的電源供應器沒有配置足夠的電源線接頭以滿足您所選擇

Accurately determine your power supply needs for your PC build. Easy to use, reliable results. Optimize your system's performance today!

Find the perfect power supply unit (PSU) for your computer system with our accurate PSU calculator. Determine the ideal wattage based on your components and calculate power requirements for optimal performance.

Choose Newegg's PC power supply calculator to build the perfect computer for your needs. Select the components you want, such as the CPU, GPU, and motherboard, and use our PSU wattage calculator to ensure each component receives the right amount of po

Calculate the true power usage of a PC. Check how many watts your computer is using when idle or in full load. This online PSU calculator tells you all you need to know.