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The first IBM PC power supply unit (PSU) supplied two main voltages: +5 V and +12 V. It supplied two other voltages, −5 V and −12 V, but with limited amounts of power. Most microchips of the time operated on 5 V power. Of the 63.5 W these PSUs could deliver, most of it was on this +5 V rail.
80 Plus (trademarked 80 PLUS) is a voluntary certification program launched in 2004, intended to promote efficient energy use in computer power supply units (PSUs). Certification is acquirable for products that have more than 80% energy efficiency at 20%, 50% and 100% of rated load, and a power factor of 0.9 or greater at 100% load.
Pages in category "Computer power supply unit manufacturers" The following 25 pages are in this category, out of 25 total. This list may not reflect recent changes .
Seventeam Electronics' booth at the 2018 Taipei Spring Computer Show. Seventeam Electronics (Chinese: 七盟電子) is a Taiwanese manufacturer of power supplies for Personal Computer and Industrial PC. Some earlier models from Seventeam were sold by Cooler Master [1] and SilverStone [2] under their own respective brand names.
be quiet! BQT L7-350W ATX power supply unit. The main focus of be Quiet! PC power supply products is the ATX format. However, the brand now also produces power supplies for SFX and TFX systems. The power supplies manufactured cover a spectrum of power classes from 300W to 1600W, focusing on high-end PC components. [14]
12VHPWR adapter (12VHPWR output on the left, four 8-pin inputs on the right) supplied with Nvidia RTX 4090 cards. The 16-pin 12VHPWR connector is a standard for connecting graphics processing units (GPUs) to computer power supplies for up to 600 W power delivery. It was introduced in 2022 to supersede the previous 6- and 8-pin power connectors ...
For example, a 900-watt power supply with the 80 Plus Silver efficiency rating (which means that such a power supply is designed to be at least 85 percent efficient for loads above 180 W) may only be 73% efficient when the load is lower than 100 W, which is a typical idle power for a desktop computer. Thus, for a 100 W load, losses for this ...
IEC Technical Specification 62700: DC Power supply for notebook computer is an IEC specification of a common standard for external laptop computer AC adapters.Laptops and AC adapters following this standard will have interchangeable power supplies, which will enable easy reuse of used power supplies (thereby reducing electronic waste) and make buying a new compatible power supply for a laptop ...