Akasa PowerMax 1000W PSU, 25% load
| Voltage line |
Power load |
Voltage line |
Power load |
| 3,3V |
6A |
12V1 |
9A |
| 5V |
10A |
12V2 |
6A |
3.3V |
5V |
12V1 |
12V2 |
Akasa PowerMax 1000W PSU, 50% load
| Voltage line |
Power load |
Voltage line |
Power load |
| 3,3V |
12A |
12V1 |
17A |
| 5V |
10A |
12V2 |
17A |
3.3V |
5V |
12V1 |
12V2 |
Akasa PowerMax 1000W PSU, 75% load
| Voltage line |
Power load |
Voltage line |
Power load |
| 3,3V |
12A |
12V1 |
25A |
| 5V |
10A |
12V2 |
20A |
3.3V |
5V |
12V1 |
12V2 |
Akasa PowerMax 1000W PSU, 100% load
| Voltage line |
Power load |
Voltage line |
Power load |
| 3,3V |
18A |
12V1 |
35A |
| 5V |
20A |
12V2 |
35A |
3.3V |
5V |
12V1 |
12V2 |
Akasa PowerMax 1000W PSU, 30-100% load voltage regulation test
3.3V |
5V |
12V1 |
12V2 |
Akasa PowerMax 1000W PSU, efficiency graph
Power load |
30% |
40% |
50% |
60% |
70% |
80% |
90% |
100% |
Efficiency |
83% |
85% |
85% |
84% |
83% |
83% |
81% |
79% |
Although we had doubts about the performance of the PowerMax 1000W unit when we saw that it had a single large transformer and simple topology design, our testing nullified most of our concerns. The unit worked flawlessly up to its maximum continuous power output and we even reached an 1160W peak output for a few seconds before it shut down. The voltage regulation circuit is good and keeps the lines well within specifications, although we feel that the 12V lines should be slightly boosted for psychological reasons as everybody wants to see them above 12V at all times, however to be subjective, 11.9V-12.05V is very good.
The thermal performance of the PowerMax is exceptional. The unit stays remarkably cool up to 70% load while the fan remains very quiet until then as well. As the load increases the unit heats up slightly, evidence of its efficiency being reduced, and the fan speeds up but it doesn’t become clearly audible unless you run the unit at 100% load for several minutes. The efficiency of the unit is very good as well, staying near 85% at nominal load levels and only drops slightly towards its maximum power output.
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