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2. Power supply unit (computer) - Wikipedia

   en.wikipedia.org/wiki/Power_supply_unit_(computer)

   Entry-Level Power Supply Specification (EPS) is a power supply unit meant for high-power-consumption computers and entry-level servers. Developed by the Server System Infrastructure (SSI) forum, a group of companies including Intel, Dell, Hewlett-Packard and others, that works on server standards, the EPS form factor is a derivative of the ATX ...

3. 80 Plus - Wikipedia

   en.wikipedia.org/wiki/80_Plus

   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.

4. Dell Inspiron desktop computers - Wikipedia

   en.wikipedia.org/.../Dell_Inspiron_desktop_computers

   The power supply used for both the Dell Inspiron 518 and Dell Inspiron 519 is a 300w unit. Physically, the Dell Inspiron 518 and Dell Inspiron 519 are 379 (14.9 inches) in height, 17.0 cm (6.7 inches) in width, 43.5 cm (17.1 inches) in depth and 13.1 kg (28.9 lb) in weight.

5. ATX - Wikipedia

   en.wikipedia.org/wiki/ATX

   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 ...

6. Motherboard form factor - Wikipedia

   en.wikipedia.org/wiki/Motherboard_form_factor

   A 20 % shorter variant of the ATX form factor. Compatible with most ATX cases, but has fewer slots than ATX, for a smaller power supply unit. Very popular for desktop and small form factor computers as of 2017. Mini-ATX: AOpen: 2005 150 × 150 mm (5.9 × 5.9 in) Mini-ATX is considerably smaller than Micro-ATX.

7. Small form factor PC - Wikipedia

   en.wikipedia.org/wiki/Small_form_factor_PC

   Each model of Dell's OptiPlex line of computers typically includes an Ultra-Small Form Factor (USFF) chassis option. In the Core 2 era, these machines used 8.9 cm (3.5") desktop hard drives and external power supplies, such as the OptiPlex 745 and 755. More recent units use 6.4 cm (2.5") laptop hard drives and have integrated power supplies ...