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Power supply unit (computer)

A power supply unit (PSU) converts mains AC to low-voltage regulated DC power for the internal components of a desktop computer. Modern personal computers universally use switched-mode power supplies. Some power supplies have a manual switch for selecting input voltage, while others automatically adapt to the main voltage.

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Functions

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Development

Power rating

Efficiency

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Computer power supply calculators

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Power supply unit (computer)

Nodes175
Edges174
Triples12
Avg. degree1.99
Density0.011429
Components1

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Important terminology

power supply supplies connector atx computer 12 motherboard current voltage rail psu output connectors pcie used two also one load

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
in disk drivesinstance of12 V supply was used primarily to operate motors0.80text
cooling fansinstance of12 V supply was used primarily to operate motors0.80text
standby orinstance ofThese power supplies were generally not capable of power saving modes0.80text
3.3 or 3.45 Vinstance ofsometimes filtered by a 9 V linear regulator on the card to cut the noise of the motors.Since certain i386 variant CPUs use lower operating voltages0.80text
Intel Turbo Boost have caused some ambiguity in the meaning of TDPinstance offeatures0.80text
but additional power limit settings such as PL2instance offeatures0.80text
CRPS do define the minimum amount of excess capacity.Since ATX 3.0instance ofServer power supply standards0.80text
80 Plus Goldinstance ofOther ratings0.80text
80 Plus Platinuminstance ofOther ratings0.80text
80 Plus Titanium also provide the same ratings respectivelyinstance ofOther ratings0.80text
FireWire 800 cards.Serial ATAinstance ofIn some cases these are also used to provide additional power to PCI cards0.80text
microATXinstance ofsystem layouts0.80text

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