Is getting a PSU more than what you need good?

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Lemuel Nabong

Lemuel Nabong

Honorable
Aug 10, 2013
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Is getting a PSU(corsair vs550 85%efficiency) more than what you need is good? not considering the price but considering power consumption? (50% load is where PSU are most efficient)

The average power i need for my system is 90-130.
 
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Sakkura

It varies from PSU to PSU exactly where efficiency peaks. If only because the wattage rating is somewhat arbitrary - some brands are more optimistic than others with the wattage rating.

Here's an example of a PSU peaking around 50% load:

Yzy9vUQ.gif


(source)
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envy14tpe

envy14tpe

Champion
Mar 3, 2012
9,574
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Getting a PSU with Bronze rating is the definitive beginning and end. As long as it meets that criteria then it's good in terms of efficiency. However, some manufacturers are better than others. So, the Corsair VS550 is made by Channel Well, not the best but ok.
 
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manofchalk

manofchalk

Glorious
May 11, 2012
12,914
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I was under the understanding that a PSU is most efficient at ~70%, as specified in the 80+ certification.
Its not good, but its not bad either. As long as you don't get something ridiculously over-powered, chances are you will remain above 20% load and then your talking single digit percentage differences when it comes to power efficiency.
 
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Sakkura

Sakkura

Illustrious
Aug 22, 2011
8,129
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37,965

It varies from PSU to PSU exactly where efficiency peaks. If only because the wattage rating is somewhat arbitrary - some brands are more optimistic than others with the wattage rating.

Here's an example of a PSU peaking around 50% load:

Yzy9vUQ.gif


(source)
 
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