Any Disadvantages Of Having A Bigger PSU Than Needed

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DookieDraws

DookieDraws

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Oct 8, 2004
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Like the title says, are there disadvantages of having a PSU that is a lot more powerful than the system actually needs? No doubt I will get a Seasonic 80 PLUS Platinum-rated PSU for my build, just wanted to know if I will lose any efficiency going with too big of a power supply.

FYI, I am currently in the process of researching components for my build and I am not planning to over-clock anything and I will also be running a single graphics card.

Thanks guys!
 
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St0rm_KILL3r
No, there's not any disadvantage of having a bigger psu than needed. It would do you only good. Psu will only draw power as much as it needs it may be a 550watt psu supplying full 500w to your machine or it may be a 1000w psu supplying only 550w power to your pc, giving you a lot of headroom to oc or sli/cf. But, don't just consider it's capacity but also it's efficiency and above all quality. I mean I will be buying a $90 600w psu which is gold-silver rated rather than buying $80 700w psu bronze (or unrated) psu. Although bronze rated is more than enough quality you need.
All I wan't to say is except the extra cost, bigger psu will do no loos to you.
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vmem

vmem

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Feb 17, 2012
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optimal efficiency is when a PSU is between 60-80% load.

that said, for a high quality PSU, the efficiency at other load points are all pretty good (especially for platinum). if you can afford it, it's a good investment for future upgrades
 
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St0rm_KILL3r

St0rm_KILL3r

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Sep 14, 2013
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No, there's not any disadvantage of having a bigger psu than needed. It would do you only good. Psu will only draw power as much as it needs it may be a 550watt psu supplying full 500w to your machine or it may be a 1000w psu supplying only 550w power to your pc, giving you a lot of headroom to oc or sli/cf. But, don't just consider it's capacity but also it's efficiency and above all quality. I mean I will be buying a $90 600w psu which is gold-silver rated rather than buying $80 700w psu bronze (or unrated) psu. Although bronze rated is more than enough quality you need.
All I wan't to say is except the extra cost, bigger psu will do no loos to you.
 
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