SilverStone Sugo SG07 Case Review
Load Tests
Contents
We conducted several tests with this power supply, as described in the article, Hardware Secrets Power Supply Test Methodology.
First we tested this power supply with five different load patterns, trying to pull around 20%, 40%, 60%, 80%, and 100% of its labeled maximum capacity (actual percentage used listed under “% Max Load”), watching the behavior of the reviewed unit under each load. In the table below, we list the load patterns we used and the results for each load.
If you add all the power listed for each test, you may find a different value than what is posted under “Total” below. Since each output can vary slightly (e.g., the +5 V output working at +5.10 V), the actual total amount of power being delivered is slightly different than the calculated value. In the “Total” row, we are using the real amount of power being delivered, as measured by our load tester.
The +12VA and +12VB inputs listed below are the two +12 V independent inputs from our load tester. During our tests, both inputs were connected to the power supply single rail (the power supply EPS12V connector was installed on the +12VB input).
| Input | Test 1 | Test 2 | Test 3 | Test 4 | Test 5 |
| +12VA | 4 A (48 W) | 9 A (108 W) | 13 A (156 W) | 17.5 A (210 W) | 22.5 A (270 W) |
| +12VB | 4 A (48 W) | 9 A (108 W) | 13 A (156 W) | 17.5 A (210 W) | 22 A (264 W) |
| +5V | 1 A (5 W) | 2 A (10 W) | 4 A (20 W) | 6 A (30 W) | 8 A (40 W) |
| +3.3 V | 1 A (3.3 W) | 2 A (6.6 W) | 4 A (13.2 W) | 6 A (19.8 W) | 8 A (26.4) |
| +5VSB | 1 A (5 W) | 1 A (5 W) | 1.5 A (7.5 W) | 2 A (10 W) | 3 A (15 W) |
| -12 V | 0.5 A (6 W) | 0.5 A (6 W) | 0.5 A (6 W) | 0.5 A (6 W) | 0.5 A (6 W) |
| Total | 113.0 W | 237.8 W | 350.0 W | 472.3 W | 598.2 W |
| % Max Load | 18.8% | 39.6% | 58.3% | 78.7% | 99.7% |
| Room Temp. | 46.3° C | 44.8° C | 45.3° C | 45.7° C | 48.4° C |
| PSU Temp. | 52.4° C | 51.2° C | 51.4° C | 48.8° C | 52.9° C |
| Voltage Regulation | Pass | Pass | Pass | Pass | Pass |
| Ripple and Noise | Pass | Pass | Pass | Pass | Pass |
| AC Power | 131.3 W | 271.6 W | 401.7 W | 551.1 W | 704.0 W |
| Efficiency | 86.1% | 87.6% | 87.1% | 85.7% | 85.0% |
| AC Voltage | 113.6 V | 113.1 V | 112.1 V | 111.1 V | 109.0 V |
| Power Factor | 0.972 | 0.984 | 0.989 | 0.992 | 0.994 |
| Final Result | Pass | Pass | Pass | Pass | Pass |
The performance achieved by this power supply was impressive. It could maintain efficiency above 85% during all our tests, peaking at 87.6%. It could easily have received the 80 Plus Silver certification.
Voltages were always inside the allowed range, and noise and ripple levels were always low, except at the +3.3 V output (but still below the maximum allowed). Below you can see the results for the power supply outputs during test number five. The maximum allowed is 120 mV for +12 V and -12 V, and 50 mV for +5 V and +3.3 V. All values are peak-to-peak figures.
Figure 18: +12VA input from load tester during test five at 598.2 W (34.6 mV)
Figure 19: +12VB input from load tester during test five at 598.2 W (29.2 mV)
Figure 20: +5V rail during test five at 598.2 W (20.4 mV)
Figure 21: +3.3 V rail during test five at 598.2 W (42.2 mV)
Let’s see if we can pull even more from the SilverStone SST-ST60F-SG.