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Esteemed Contributor III

New PSU Efficiency Certifications - Cybernetics "ETA" (efficiency) and "LAMBDA" (noise)

I'll let you read the article, but basically it tests PSUs at hundreds of different load level combinations, not just the 4 80 Plus uses,

Cybenetics Offers New PSU Efficiency Certification

ETA LevelAVG EfficiencyPF5VSB EfficiencyVampire Power
A+94% to 97%>=0.985>79%<0.10W
A91% to 94%>=0.98>77%<0.15W
B98% to 91%>=0.97>75%<0.20W
C85% to 88%>=0.96>73%<0.23W
D82% to 88%>=0.95>71%<0.25W

LAMBDA LevelRequirements
A++< 20 dB(A)
A+20 dB(A) to 25 dB(A)
A25 dB(A) to 30 dB(A)
B30 dB(A) to 35 dB(A)
C35 dB(A) to 40 dB(A)
D40 dB(A) to 45 dB(A)
E> 45 dB(A)

As of right now there are only 40 PSUs in the database, but none of them, even from the giants of Super Flower, Seasonic, FSP, and Enermax, have an A++ efficiency (ETA) score, even on their 80 Plus Titanium units. Each power supply tested is accompanied by a detailed report breakdown, including efficiency performance under more realistic 40°C ambient temperatures. Granted it is extremely difficult to hit all the A+ ETA requirements, but that's the point.

Cybenetics Labs – PSU Efficiency & Noise Level Certifications - Database