![]() Older ATX power supplies were typically 60% to 75% efficient. Supplies are typically most efficient at between half and three-quarters load, much less efficient at low load, and somewhat less efficient at maximum load. Redundant power supply contains two (or more) modules.įor a given power supply, efficiency varies depending on how much power is being delivered. Īlthough some power supply manufacturers name their products with similar names, such as "85 Plus", "90 Plus" and "95 Plus", there is no such official certification or standard. In some instances, a reseller has claimed a higher wattage than the supply can deliver, so the reseller's supply would not meet 80 Plus requirements. When a company resells an OEM power supply under a new name, it must be certified under the new name and company, even if the OEM supply is certified. However, this is not the case as one could easily modify the test unit to be more enhanced than production models in order to slightly raise numbers. Some companies will claim they meet this requirement even when they are only close (i.e. For example, the highest 80 Plus is 80+ Titanium (96% efficiency at 50% load). There have been instances where companies claim or imply that their supplies are 80 Plus when they have not been certified, and in some cases do not meet the requirements. Redundancy is typically used in data centers. For the next year, the target is 80 Plus Bronze level, the following year 80 Plus Silver, then 80 Plus Gold, and finally Platinum. From July 2007 through June 2008, the basic 80 Plus level (Energy Star 4.0). ![]() The Climate Savers Computing Initiative efficiency level targets for workstations for 2007 through 2011, corresponding to the 80 Plus certification levels. The Platinum level requires 0.95 or better power factor for servers.
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