Newegg Power Supply Calculator ((free)) Jun 2026

Upon configuration, the tool provides three key metrics:

Newegg admits that its recommendation is a "general idea" and suggests adding a 10–20% buffer to account for burst loads or future upgrades.

Here’s the text for the (as found on their website): newegg power supply calculator

Calculating exact needs prevents overpaying for a massive 1200W unit when a 750W unit is sufficient.

Based on this analysis, the following guidelines are recommended when using the Newegg Power Supply Calculator: Upon configuration, the tool provides three key metrics:

You choose your CPU (Intel or AMD), motherboard form factor (like ATX), and GPU series.

It accounts for RAM (number of sticks and size), storage (SSDs and HDDs), optical drives, and even peripherals like RGB fans. It accounts for RAM (number of sticks and

Select the video card manufacturer and model, as GPUs are the largest power consumers.

Manual tuning of CPU and GPU voltages significantly increases power consumption past factory ratings.

Underpowered systems suffer from sudden shutdowns, Blue Screens of Death (BSOD), and boot loops.