Corsair
If you’re building a PC or upgrading components, you might be agonizing over what size PSU to buy and whether there’s any such thing as too much PSU.
PSUs Don’t Default to Maximum Output
The rating for a given PSU is its maximum load rating, not its default load just plugged in and turned on.
Your computer might feel like a space heater sometimes—and it certainly adds heat to your home—but it’s not quite like a space heater in the sense that a 500W space heater is either going full bore or it’s not on.
Your PSU is like an engine that can be called upon to run harder if necessary but will idle when there is no demand. An 850W PSU doesn’t run at 850W every second it is on, it runs at exactly what the hardware demands. That demand varies between hardware configurations and even what you’re doing with a given hardware configuration.
Your GPU, to highlight a particularly power-hungry component, might only draw 50W while you’re fiddling around with work documents (or watching YouTube to avoid working…
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