The most accurate information is printed on a sticker on the side of the PSU.
Look for a large number followed by a "W" (e.g., 650W, 750W, 850W). check wattage of power supply
Find your or Serial Number (usually on a sticker on the back or bottom of the PC). The most accurate information is printed on a
: If you have a pre-built computer (like a Dell or HP), search for your specific model's service manual on the manufacturer's website; it will list the PSU wattage. check wattage of power supply
| PSU | Label (W) | +12V Rating (A) | True Continuous (W) | Difference | |-----|-----------|----------------|---------------------|-------------| | Brand A | 600W | 50A (600W) | 580W | -3% | | Generic B | 700W | 24A (288W) | 250W | -64% |