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Thread: 80plus Standard

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    80plus Standard

    Am I right in thinking that if a PSU is an EU only model (230v), that it isn't certified by 80plus, because they only test desktop power supplies at 110v?

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    Re: 80plus Standard

    No idea, i thought it was just down to efficiency?

    Why would they "only" test at 110 when most countries use 230-ish? Its only America and Japan that run that, i think?
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    Re: 80plus Standard

    80+ is just efficiency over 80%, so surely if it's 80%+ efficient it's certified 80+ regardless of 110/230v.

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    Re: 80plus Standard

    depends, enermax test both voltages http://www.enermax.co.uk/products/po...ution85.htmlas the 1250w is only 85+ on 240v

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    Re: 80plus Standard

    Active PFC power supplies are more efficient on higher voltages, there can be as much as a 5% difference between 110V and 240V input even on a premium PSU. A power supply with a 80% efficiency rating in the EU where the supply is 240V may only be 75% efficient across the pond on 110V.

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    Re: 80plus Standard

    Well the reason I wanted to know was some power supplies that are reviewed and are said to meet 80plus aren't listed on the 80plus website, then I looked up on wikipedia and they have a table where 80plus is only 110v, but 80plus bronze/silver/gold is both and platinum is 230v only. http://en.wikipedia.org/wiki/80plus

    And also if a psu was only available to Europe and only ran at 230v does it get rated by 80plus because 80plus are based in the USA. The only 230v power supplies on there are for data servers or redundant.

    Yeah I've seen before that at 230v PSUs are about 2-5% more efficient, so an 80plus over here is like 82-90 something plus.

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    Re: 80plus Standard

    What others have said really. If it meets 80 plus at 110v then it will almost certainly be more efficient at 230v. Just because it doesn't have an 80 plus logo on it doesn't mean it doesn't meet their specs. JonnyGuru and Hardware secrets are about the best PSU reviewers I've come across and both test efficiency at room temperature and when heated up. Some more info on these pages: http://www.hardwaresecrets.com/article/742 http://www.hardwaresecrets.com/article/856

    Edit: Also 80 Plus doesn't test below 20% which is a bad move IMO since that's where a lot if not most PSUs will spend most of their time. That doesn't apply so much to PSUs supplied with pre-built PSUs since they're normally a lower wattage to save money so would run at a higher percentage of their capacity but then I doubt most of them go in for 80 plus anyway. MFRs are more likely to make PSUs efficient at the load levels 80 Plus tests before considering low-load efficiency. IMO the 80 Plus spec should be update to include around 10% load...
    Last edited by watercooled; 17-01-2010 at 09:55 PM.

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