For years, was the go-to standard, ensuring 80% efficiency at 20%, 50%, and 100% load. However, Cybenetics has become the preferred choice for detailed, real-world data in 2026. 80 Plus Certification Levels (Highest to Lowest)
When enthusiasts talk about checking a PSU rating, they usually mean checking its . The market is flooded with PSUs that claim "800 Watts" but can barely deliver 400W of stable power before exploding.
More advanced ($200+) can verify actual maximum wattage, but for most users, a simple tester is enough to catch a dead or severely out-of-spec PSU. psu rating checker
For definitive electrical checking, a (e.g., Thermaltake Dr. Power II, $20-40) checks:
Programs like HWMonitor, CPU-Z, or Speccy cannot read PSU efficiency or certification. They only report voltages from motherboard sensors, which are often inaccurate. For years, was the go-to standard, ensuring 80%
Before you buy or install a power supply, run it through this "PSU Rating Checker" workflow:
The most common rating is — a certification that a PSU converts at least 80% of input power to output power at specific loads (20%, 50%, 100%). Tiers include: The market is flooded with PSUs that claim
Electricians use a (a small box with an LCD screen that plugs into the PSU ports). These are cheap ($20) and give a pass/fail result for voltage regulation. They are great for a quick sanity check before plugging a used PSU into a $2000 PC.