He opened Windows Search, typed “System Information,” and found nothing about power supply. He tried HWMonitor — no PSU data. Then CPU-Z, then Speccy. Nothing. Software can’t read PSU stickers because there’s no data cable from the power supply to the motherboard. Lesson one learned.
There it was:
Leo dug through his desk drawer. Found the original PC manual — no PSU wattage listed. Prebuilt companies sometimes hide that. Then he checked his order email: “500W Power Supply.” Bingo. But was that still accurate? He’d added more drives and RGB fans since then. how to check psu wattage
So Leo decided to check the PSU wattage for real.
“550W,” he whispered. The new card needed 650W. If he’d just plugged it in, the PC would randomly shut down under load — or worse. Nothing
He could just plug in the card and hope. But a friend’s voice echoed in his head: “Never guess with power. Guess = fireworks.”
Leo stared at the new graphics card box on his desk. “Requires 650W PSU,” it read in bold letters. His PC ran fine, but it was a prebuilt from two years ago. He had no idea what power supply was inside. There it was: Leo dug through his desk drawer
That confirmed it. No need to open anything.