Seasonic X-400 Fanless Power Supply Review
Overload Tests
Contents
Below you can see the maximum we could pull from this power supply. Because of its incredibly overspec’ed components, we could pull 600 W from it and it was still presenting extremely high efficiency (88%), with low noise and ripple levels, and voltages still within 3% from their nominal values. Impressive.
| Input | Overload Test |
| +12VA | 22 A (264 W) |
| +12VB | 22 A (264 W) |
| +5V | 8 A (40 W) |
| +3.3 V | 8 A (26.4 W) |
| +5VSB | 2 A (10 W) |
| -12 V | 0.5 A (6 W) |
| Total | 602.2 W |
| % Max Load | 150.6% |
| Room Temp. | 40.2° C |
| PSU Temp. | 48.7° C |
| AC Power | 683.0 W |
| Efficiency | 88.2% |
| AC Voltage | 107.8 V |
| Power Factor | 0.993 |