Efficiency

Efficiency (in %) refers to the degree of efficiency a device achieves. This is defined as the ratio between the output power and the supplied power. If a power supply works at 80% efficiency, then 20% of the energy is lost. That lost energy is primarily issued in the form of thermal energy. High efficiency means better utilisation of the energy and leads to lower energy costs.

EPS 12V V2.92

EPS is the Entry-Level Power Supply form factor for server power supply units. Similar to the ATX Power Supply Guide, precise specifications have been defined and the power supply unit must meet them to be in compliance with the form factor. One condition laid out in the EPS Guide for example is the presence of an EPS 8pin plug.

ErP-ready

ErP is a guideline for energy-powered devices. It came into effect in August 2007 and is the basis for a separate law in Germany, the Energie-Betriebene-Produkte-Gesetz (EBPG). ErP requires increased energy efficiency from electronic devices to reduce the negative impact on the environment (such as increased CO2 emissions). ErP ready means that the electronic device affixed with that title complies with the ErP guidelines.

Efficiency

Efficiency (in %) refers to the degree of efficiency a device achieves. This is defined as the ratio between the output power and the supplied power. If a power supply achieves 80% efficiency, then 20% of the energy is lost. That lost energy is primarily issued in the form of thermal energy. High efficiency means better utilisation of the energy and leads to lower energy costs.

Energy Star (5.0)

Energy Star certifies that electric devices meet the energy saving criteria set out by the American EPA (Environmental Protection Agency) and the US Department of Energy. One important criteria is that a switched-on device move automatically into energy-saving standby mode after certain amount of time.