Zalman ZM770-XT Power Supply Review
Overload Tests
Contents
We overloaded Zalman ZM770-XT to the maximum listed in the table below. If we increased one amp on any output noise level at +12 V would increase above 120 mV, making the unit to work outside the correct range. During this overloading the -12 V output was already outside range, with a noise level of 134.4 mV (the maximum allowed is 120 mV). Voltages stayed inside a 3% margin from their nominal values, which is terrific.
| Input | Maximum |
| +12V1 | 30 A (360 W) |
| +12V2 | 30 A (360 W) |
| +5V | 15 A (75 W) |
| +3.3 V | 15 A (49.5 W) |
| +5VSB | 3 A (15 W) |
| -12 V | 0.5 A (6 W) |
| Total | 867.4 W |
| % Max Load | 112.6% |
| Room Temp. | 48.9° C |
| PSU Temp. | 58.7° C |
| AC Power | 1,100 W |
| Efficiency | 78.9% |
| AC Voltage | 104.9 V |
| Power Factor | 0.997 |