Zalman ZM850-HP Plus Power Supply Review
Overload Tests
Contents
Below you can see the maximum we could pull from this power supply. We couldn’t pull more than that because the unit would shut down, which is the desired behavior. During this test, however, the +3.3 V was way below the minimum allowed, at only +2.96 V, and the +5VSB was at +4.72 V (the minimum allowed is +4.75 V). The efficiency below 80% shows us that the unit was already running above its limits.
| Input | Overload Test |
| +12VA | 33 A (396 W) |
| +12VB | 33 A (396 W) |
| +5V | 20 A (100 W) |
| +3.3 V | 20 A (66 W) |
| +5VSB | 3 A (15 W) |
| -12 V | 0.5 A (6 W) |
| Total | 944.0 W |
| % Max Load | 1 11.1% |
| Room Temp. | 44.4° C |
| PSU Temp. | 46.4° C |
| AC Power | 1,197 W |
| Efficiency | 78.9% |
| AC Voltage | 100.1 V |
| Power Factor | 0.994 |