Hold Up Time
The hold-up time is short compared to similar Wattage PSU offerings. Still, it exceeds 17ms. The main issue is that the Power Ok signal’s hold-up time is identical to the unit’s. Hence, the PWR_OK Inactive to DC Loss Delay doesn’t exceed 1 ms, as the ATX spec requires. Because of this, the PSU loses its ATX v3.1 compliance.
Inrush Current
The inrush currents are high at both voltage inputs.
Timings
The PSU supports Alternative Low Power Modes.
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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.