Testing
High Power RockSolid 1200W PSU, 25% load
Voltage line |
Power load (amps) |
Voltage line |
Power load (amps) |
3,3V |
6A |
12V2 |
5A |
5V |
5A |
12V3 |
6A |
12V1 |
7A |
12V4 |
3A |
 |
 |
3.3V |
5V |
 |
 |
12V1 |
12V2 |
 |
 |
12V3 |
12V4 |
High Power RockSolid 1200W PSU, 50% load
Voltage line |
Power load (amps) |
Voltage line |
Power load (amps) |
3,3V |
12A |
12V2 |
10A |
5V |
10A |
12V3 |
10A |
12V1 |
12A |
12V4 |
10A |
 |
 |
3.3V |
5V |
 |
 |
12V1 |
12V2 |
 |
 |
12V3 |
12V4 |
High Power RockSolid 1200W PSU, 75% load
Voltage line |
Power load (amps) |
Voltage line |
Power load (amps) |
3,3V |
12A |
12V2 |
12A |
5V |
10A |
12V3 |
20A |
12V1 |
14A |
12V4 |
20A |
 |
 |
3.3V |
5V |
 |
 |
12V1 |
12V2 |
 |
 |
12V3 |
12V4 |
High Power RockSolid 1200W PSU, 100% load
Voltage line |
Power load (amps) |
Voltage line |
Power load (amps) |
3,3V |
12A |
12V2 |
18A |
5V |
25A |
12V3 |
25A |
12V1 |
18A |
12V4 |
25A |
 |
 |
3.3V |
5V |
 |
 |
12V1 |
12V2 |
 |
 |
12V3 |
12V4 |
High Power RockSolid 1200W PSU, 30-100% load voltage regulation test
 |
 |
3.3V |
5V |
 |
 |
12V1 |
12V2 |
 |
 |
12V3 |
12V4 |
High Power RockSolid 1200W PSU, efficiency graph
| Power load |
30% |
40% |
50% |
60% |
70% |
80% |
90% |
100% |
| Efficiency |
82% |
84% |
85% |
85% |
84% |
84% |
82% |
80% |
High Power RockSolid 1200W PSU, thermal performance
| Load (%) |
25% |
50% |
75% |
100% |
| Intake temperature (Celsius) |
23.3 |
27.7 |
30.3 |
31.1 |
| Exhaust temperature (Celsius) |
27.8 |
33.0 |
42.0 |
46.7 |
The HPC-1200 unit gave us no trouble through our testing and could certainly deliver its maximum output of 1200W continuously. Matter of fact, the unit would work slightly overloaded at 1250W output without shutting down. The electrical performance unfortunately fails to impress. At high power loads the 12V lines of the unit tend to weaken and although they are still very much within specification, no enthusiast would like to see a 12V line dropping down to 11,7V. The voltage regulation circuit works well but it is slow to react. Continuous extreme load shifts can cause large voltage drops and they even sent the 3,3V line down to 2,98V for a fraction of a second.
The thermal performance of the unit falls within expected parameters. The HPC-1200 is a cool running unit and will not heat up considerably even at very high loads. At >50% load (which is the most likely operating range for such a unit) it is very quiet, with only a low humming noise coming from its fans. It becomes audible above 50% load and at 75%+ we can say that it is clearly audible, but never noisy or irritating. The efficiency of the unit is very good and it certainly stays above 80% at all loads, as the "80 Plus" specification suggests.
