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What power supply specifications tell you

Rated wattage is only one part of choosing a power supply. Check its physical size, connectors and stated ATX specification against the parts in your build.

Fields in the power supply catalogue

156 manufacturer specification records
FieldHow to use itRecords with a value
Rated wattageThe maker's stated continuous output rating. It is not a measurement of your computer's draw.156
Form factorMatch the PSU format and dimensions to the case. ATX and SFX describe different physical formats.156
80 PLUS gradeAn efficiency label, not a complete quality, noise or reliability verdict.156
ATX specificationThe revision explicitly stated by the manufacturer. An unstated revision remains unknown.115
WarrantyThe manufacturer term recorded for that model. Check the seller, region and purchase condition.125

Manufacturer documents and their update dates are collected on the Sources page linked in the footer. Different model revisions can have different specifications.

Compare the next decision

Prices by wattageATX 3.0 vs 3.180 PLUS Gold vs PlatinumCheck a selected build