Stress Test: Power Supplies Under Full Load
Aopen Prima Power 700: Super Results - No SLI
THG engineers liked it: at first glance the 700 watt Aopen Prima Power looks like a blender. The results were by no means shoddy.
The graphic above shows the power supply connections and their length in centimeters. Corners were cut big time with the connections: no SLI operation possible and only one floppy connection.
Features
Considering just the specs, the Aopen Prima Power is the second strongest contender in our field. We are talking about 700 watts of consistent power promised by the manufacturer. Already now we are very interested in the final results.
Promises lots of power: The Aopen Prima Power with 700 watts
Spec sign of the Aopen Prima Power - a consistent load of 700 watts. Positive: The separation into for 12-volt tracks with respective voltage load, description and color coding.
No switch needed: Compatible for the complete range between 110 volts to 230 volts.
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Test Results
Despite the editor's skepticism over the lean dimensions of the cooling unit, the Aopen Prima Power 700W passes the test without any symptoms of stress.
| AOpen Prima Power 700W | |||
|---|---|---|---|
| Test Phase 1 | |||
| Test Description | Lower Limit | Upper Limit | Result |
| Increase load from 20% to 100% of nominal load limit | 140 watts | 700 watts | Passed |
| Test Phase 2 | |||
| Test Description | Row 4 - Cell 1 | Load | Result |
| Steady load at 100% nominal load | Row 5 - Cell 1 | 700 watts | Passed |
| Test Phase 3 | |||
| Voltage Stability | |||
| Power Rail | Measurement | Min/Max according to ATX Spec. | Result |
| + 3.3 V | + 3.16 V | +/- 5% (+3.14 to +3.46 V) | Passed |
| + 5 V | + 4.80 V | +/- 5% (+4.76 to +5.25 V) | Passed |
| + 12 V | + 12.15 V | +/- 5% (+11.4 to +12.6 V) | Passed |
| + 12 V CPU | + 12.01 V | +/- 5% (+11.4 to +12.6 V) | Passed |
| + 5 V Standby | + 4,98 V | +/- 5% (+4.76 to +5.25 V) | Passed |
| - 12 V | - 12.76 V | +/- 10% (-10.8 to -13.2 V) | Passed |
| Ripple | |||
| Power Rail | Measurement | Min/Max according to ATX Spec. | Result |
| +3.3 V | 37 mV | 50 mV (Peak-Peak) | Passed |
| +12 V CPU | 95 mV | 120 mV (Peak-Peak) | Passed |
| Further Data | |||
| Value | Measurement | Row 20 - Cell 2 | Row 20 - Cell 3 |
| Noise Level (max.) | 62 dB(A) | Row 21 - Cell 2 | Row 21 - Cell 3 |
| Voltage | 212 V | Row 22 - Cell 2 | Row 22 - Cell 3 |
| Current | 4.04 A | Row 23 - Cell 2 | Row 23 - Cell 3 |
| Cos Phi (Phasenverschiebung) | 0.97 | Row 24 - Cell 2 | Row 24 - Cell 3 |
| Efficiency | 84.0% | Row 25 - Cell 2 | Row 25 - Cell 3 |
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