Seasonic Focus GX-750 V4 ATX v3.1 PSU Review

Hold Up Time

hold_up_time

ac_loss_hold_up_time

pwr_ok_inactive_to_dc_loss_delay

The hold-up time is increased, and the power ok signal’s hold-up time is accurate, but it doesn’t exceed 16ms. This is not a problem for the ATX v3.1 spec though, which is looser than the ATX v3.0 in this section.

Inrush Current

inrush_current_115V

inrush_current_230V

The inrush currents are sky-high at both voltage inputs.

Timings

timing_20%_t1

timing_20%_t3

timing_100%_t1

timing_100%_t3

The PSU supports Alternative Low Power Modes.