Load Testing
Test 1 (75.45W Load – Cold)
| Rail |
Load |
Voltage |
Ripple |
| 12V |
2.43A |
12.15V |
11.2mV |
| 5V |
5.05A |
5.05V |
5.6mV |
| 3.3V |
4.96A |
3.37V |
5.0mV |
| -12V |
0.1A |
-11.71V |
6.8mV |
| 5Vsb |
0.51A |
5.08V |
4.0mV |
| AC Power |
82.7W |
| Efficiency |
91.24% |
| Power Factor |
0.92 |
.
Test 2 (125.29W Load – Cold)
| Rail |
Load |
Voltage |
Ripple |
| 12V |
4.86A |
12.15V |
17.6mV |
| 5V |
5.05A |
5.05V |
5.8mV |
| 3.3V |
10.21A |
3.37V |
6.4mV |
| -12V |
0.1A |
-11.8V |
8.6mV |
| 5Vsb |
1.02A |
5.08V |
7.8mV |
| AC Power |
135W |
| Efficiency |
92.81% |
| Power Factor |
0.95 |
.
Test 3 (179.96W Load – Cold)
| Rail |
Load |
Voltage |
Ripple |
| 12V |
7.29A |
12.15V |
21.2mV |
| 5V |
10.08A |
5.04V |
6.8mV |
| 3.3V |
10.18A |
3.36V |
5.8mV |
| -12V |
0.1A |
-12.08V |
11.2mV |
| 5Vsb |
1.02A |
5.08V |
8.6mV |
| AC Power |
194.4W |
| Efficiency |
92.57% |
| Power Factor |
0.96 |
.
Test 4 (209.3W Load – Cold)
| Rail |
Load |
Voltage |
Ripple |
| 12V |
9.72A |
12.15V |
24.4mV |
| 5V |
10.06A |
5.03V |
7.2mV |
| 3.3V |
10.18A |
3.36V |
6.0mV |
| -12V |
0.1A |
-12.23V |
16.0mV |
| 5Vsb |
1.01A |
5.07V |
9.2mV |
| AC Power |
225.1W |
| Efficiency |
92.98% |
| Power Factor |
0.97 |
.
Test 5 (261.16W Load – Cold)
| Rail |
Load |
Voltage |
Ripple |
| 12V |
14.0A |
12.15V |
31.2mV |
| 5V |
10.06A |
5.03V |
8.6mV |
| 3.3V |
10.15A |
3.35V |
6.2mV |
| -12V |
0.1A |
-12.52V |
30.0mV |
| 5Vsb |
1.01A |
5.07V |
11.0mV |
| AC Power |
286.0W |
| Efficiency |
91.31% |
| Power Factor |
0.99 |
.
Test 6 (317.93W Load – Cold)
| Rail |
Load |
Voltage |
Ripple |
| 12V |
18.7A |
12.14V |
40.2mV |
| 5V |
10.04A |
5.02V |
11.6mV |
| 3.3V |
10.12A |
3.34V |
9.0mV |
| -12V |
0.11A |
-12.84V |
55.0mV |
| 5Vsb |
1.01A |
5.07V |
13.0mV |
| AC Power |
350.3W |
| Efficiency |
90.76% |
| Power Factor |
0.97 |
.
Test 7 (373.88W Load – Cold)
| Rail |
Load |
Voltage |
Ripple |
| 12V |
23.3A |
12.14V |
50.2mV |
| 5V |
10.04A |
5.02V |
12.0mV |
| 3.3V |
10.12A |
3.34V |
10.2mV |
| -12V |
0.11A |
-13.15V |
76.0mV |
| 5Vsb |
1.01A |
5.07V |
14.2mV |
| AC Power |
416.3W |
| Efficiency |
89.81% |
| Power Factor |
0.99 |
.
Overload Test (439.26W Load – Cold)
| Rail |
Load |
Voltage |
Ripple |
| 12V |
28.3A |
12.14V |
61.8mV |
| 5V |
10.02A |
5.01V |
13.2mV |
| 3.3V |
10.12A |
3.34V |
12.6mV |
| -12V |
0.11A |
-13.18V |
122.4mV |
| 5Vsb |
2.02A |
5.06V |
17.2mV |
| AC Power |
486.5W |
| Efficiency |
89.29% |
| Power Factor |
0.98 |
.
The voltage regulation was excellent. Starting with the 12V rail, it started out at 12.15V, giving 0.15V, or 1.25% regulation. It only dropped by an amazing 0.01V, or 0.08%. The 5V rail managed 0.05V (1%) regulation, and dropped by 0.03V, or 0.6%. The 3.3V rail managed 0.07V (2.12%) regulation and dropped by 0.03V, or 0.91%. Achieving a drop of less than 1% on all of these rails is an absolutely amazing result.
The efficiency was also excellent, peaking at almost 93%, which is about what I would expect from an 80plus gold certified unit on 230V. The efficiency remained above 90% until Test 7, but even then, it was only a hair under. I was able to overload the power supply to 430W, with the voltages still hardly budging, and the efficiency still above 89%. When I attempted to load it higher, it would shut down.
| Rail |
Test 7 (368.51W) |
Overload Test (430.46W) |
| 12V |
 |
 |
| 5V |
 |
 |
| 3.3V |
 |
 |
| -12V |
 |
 |
| 5Vsb |
 |
 |
.
The ripple suppression was very good, staying below half the maximum allowed on all but the -12V rail. During the overload test, the -12V rail’s ripple was slightly above the maximum allowed 120mV, but that’s a very minor issue, considering that the -12V rail doesn’t see a lot of use these days, and you’re hardware won’t really notice the 2mV difference.
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