Power Supplies for Gaming PCs
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Certified power supplies: the safe foundation of every build.
What to look at before you buy
Get the wattage from your parts, not from a guess. Add the graphics card's rated power to the processor's, allow for the rest of the PC and a margin, and compare the result with the minimum your graphics card's maker lists: the higher of the two sets the size. The calculator shown on this page does that math with official figures.
Then look at efficiency and the standard. Labels such as 80 Plus Gold or Cybenetics Gold describe how much power is lost as heat, and we copy them exactly as each brand publishes them. ATX 3.1 units with a native 12V-2x6 cable connect current NVIDIA cards without an adapter, while many AMD cards still use 8-pin plugs, so count the connectors your card needs.
Last come the build details. Fully modular cables let you connect only what you use, a 120 or 135 mm fan with a zero RPM mode stays silent at low load, and the warranty, from 7 to 10 years on the units we list, shows how long the maker stands behind it.
Tools that help you choose
Guides for this category
- How Many Watts Does Your Gaming PC Need? 2026 PSU Guide
- RX 9060 XT + Ryzen 5 9600X: What Power Supply Do You Need?
- RTX 5070 vs RX 9070 XT: Which One to Buy in 2026
Frequently asked questions
How many watts do I need for a gaming PC?
Add your graphics card's and processor's rated power, leave room for the rest of the PC and a margin, and never go below the minimum your graphics card's maker lists. For a typical mid-range build our calculator lands between 450 and 650 W; high-end cards push the figure to 750 W and above.
Is a fully modular power supply worth it?
It is if you care about tidy cables or build in a small case, because you only plug in the cables your PC uses and the rest stay in the box. Electrically it does not change how much power the unit delivers. Semi-modular units are the middle ground, with the main motherboard cable fixed.
What does 80 Plus Gold or Cybenetics Gold mean?
Both are efficiency certifications: a Gold unit loses less power as heat than a Bronze one at the same load. 80 Plus tests a few load points, while Cybenetics measures across many loads and also grades noise. The label does not tell you how well the unit is built, so check the warranty and protections as well.