Four hundred and fifty watts.
But the lights in your room stayed on. The monitor’s standby light blinked patiently. That’s when you started to suspect: the heart of the machine was failing.
You remember the graphics card you installed last year. The one the forums said needed “at least 500W.” You’d read that. You’d nodded. Then you’d told yourself it would probably be fine, because people online exaggerate, right? how to tell power supply wattage
You order a new PSU that night. 650W, gold-rated, with a label you can read without dislocating your wrist. When it arrives, you install it slowly, carefully, and for the first time you notice how the cables feel different—thicker, firmer, less like cheap speaker wire and more like tools. You press the power button. The fans spin. The motherboard chimes. The machine breathes like it just woke from a long fever.
You learn that wattage isn’t just a number. It’s a promise. And not all promises are kept. A $20 700W PSU is a fire in a box. A $100 450W unit from a trusted brand can run a system that draws 440W, because it’s built to deliver its rated power continuously, not just for the first five minutes. The sticker tells you peak wattage or sustained? Most don’t say. You have to know. Four hundred and fifty watts
The sticker gives you a number. The truth gives you a lesson. And sometimes, the only way to learn is to sit in the dark, with a dead machine, and finally turn the box over.
The first time your PC shut down mid-game, you blamed the game. Corrupted save, bad patch, who knows. You restarted, loaded back in, and made it forty-five minutes before the screen went black again. No warning, no blue screen, no flicker—just nothing . Like someone had pulled the plug. That’s when you started to suspect: the heart
They weren’t exaggerating. They were survivors.