Do all Power Supply Box’s in Desktop computers have the same amount of Voltage?

Question by Smiley: Do all Power Supply Box’s in Desktop computers have the same amount of Voltage?
Do all Power supply box’s in desktops computers give the motherboard the same amount of Power (Electricity).
My old computer’s power supply box is damage so i want to put my other computer’s power supply box in my old computer to see if the computer is running well. Both computers are Pentium 3 processor.
Do all desktop computer motherboard take the same amount of electricity.
But my other computer’s power supply box is smaller then my old computer’s one?
Do you think it will work?

Best answer:

Answer by :not_the_usual1
No. Kinda.

While they do (for the most part) supply the same voltages to a motherboard, the amount of power they can supply is what’s important.

They are rated by watts. If anything, get a “larger” (higher wattage power supply) if you can’t get the same thing you already have.

NEVER put in a smaller wattage supply unless you are geeked up enough to understand the possible side effects. Like your computer not working. But don’t confuse “physical size” with wattage – there will be a wattage rating on a sticker on the supply.

As inexpensive as they’ve become, I’d buy up a bit. Less stressed power supplies last longer.

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