Efficiency Normal, Light & Super-Light Loads
Efficiency is high at normal loads at both voltage inputs and light and super-light loads at 115V. Only at light loads at 230V is the average efficiency not that high.
Average Efficiency
The average efficiency is high enough.
Average PF
The APFC converter performs well, especially at 230V.
Average Efficiency 5VSB
The 5VSB rail’s efficiency is sky-high!
Vampire Power
Vampire power should be lower, especially at 230V.
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I read that ball bearing fans become significantly louder over their lifespan, so they’re deceptive in terms of noise. Is that true? Also, I read that if they’re dropped they can be ruined, so they’re more delicate than FDB fans. It seems like a no-brainer to exclusively use FDB fans in high-end PSUs. Ball bearing fans appear to be able to produce more static pressure than other fan types but since FDB fans apparently can be used in low-noise PSUs, it seems that that advantage isn’t enough to outweight the drawbacks.
With not high quality DBB fans yes this can be the case.