Hey everyone! I've got a quick question about power supply units (PSUs) and their efficiency ratings. If I buy a PSU with an 80+ Gold rating, which indicates it's 87% efficient, does that mean it's actually providing 750W to my components while drawing more from the wall? Like, is the 13% loss already factored in, or should I think of it as 750W - 13% = 652.5W? Appreciate any help!
3 Answers
When you see a PSU with a 750W rating, that’s the power it’s designed to deliver to your components. So at full load, it’ll actually draw around 860W from the wall due to its 87% efficiency. Don't worry, the 750W is the usable power, not the draw from the wall.
The number you see for wattage is indeed what it can deliver. Just remember, efficiency isn’t the same across all loads—it varies based on how much power you’re drawing. But if your PSU is rated as 750W at 87% efficiency, it means it’ll use around 862W from the wall to provide that output.
Exactly, the wattage listed is what your PSU outputs. The efficiency percentage is about how well it converts power from the wall into usable power. So if it's rated at 750W and 87% efficient, it will pull about 862W from the wall to give you that 750W.
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