Look for a large number followed by a "W" (e.g., 650W, 750W, or 850W).

Here is exactly how to find your PSU wattage using three different methods. Method 1: The Side Panel Inspection (Most Accurate)

: Look for a value followed by "W" (e.g., 500W , 750W ). It may be listed as "Max Power" or "Total Power". Method 2: Check System Documentation