He couldn’t read it without unscrewing the PSU and turning it around. But before doing that…
He decided to look for a label he could see. Some PSUs have a second sticker on the back (where the power cord plugs in). He checked there — nothing but voltage input specs.
Leo shut down his PC, unplugged the power cord, and pressed the power button for 10 seconds to drain leftover charge. He laid the tower on its side, removed the side panel (two thumbscrews), and aimed a flashlight inside. how to check psu wattage
Here’s a short, practical story about figuring out a PC’s power supply wattage without taking it apart — unless you really have to.
His new GPU ran beautifully a week later — no sparks, no shutdowns, just smooth gaming. Because a little detective work beats a big puff of smoke every time. He couldn’t read it without unscrewing the PSU
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.
So he gently unplugged the main motherboard 24-pin cable and the CPU 8-pin cable (noting where they went), unscrewed the four PSU mounting screws, and tilted the unit just enough to see the main label. He checked there — nothing but voltage input specs
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.