SilverStone Strider Gold 650 W Power Supply Review
Ripple and Noise Tests
Contents
Voltages at the power supply outputs must be as “clean” as possible, with no noise or oscillation (also known as “ripple”). The maximum ripple and noise levels allowed are 120 mV for +12 V and -12 V outputs, and 50 mV for +5 V, +3.3 V and +5VSB outputs. All values are peak-to-peak figures. We consider a power supply as being top-notch if it can produce half or less of the maximum allowed ripple and noise levels.
The SilverStone Strider Gold 650 W provided ripple and noise levels within the allowed range, however, noise levels at the +3.3 V output we
re almost touching the maximum allowed during tests four and five.
| Input | Test 1 | Test 2 | Test 3 | Test 4 | Test 5 |
| +12VA | 37.4 mV | 30.0 mV | 30.2 mV | 28.4 mV | 30.4 mV |
| +12VB | 35.2 mV | 30.4 mV | 29.2 mV | 29.2 mV | 29.4 mV |
| +5 V | 18.8 mV | 23.0 mV | 26.4 mV | 32.8 mV | 38.4 mV |
| +3.3 V | 17.4 mV | 23.2 mV | 28.2 mV | 48.8 mV | 46.4 mV |
| +5VSB | 8.6 mV | 13.4 mV | 17.4 mV | 22.4 mV | 29.4 mV |
| -12 V | 64.4 mV | 53.4 mV | 58.6 mV | 76.2 mV | 92.4 mV |
Below you can see the waveforms of the outputs during test five.
Figure 24: +12VA input from load tester during test five at 648.8 W (30.4 mV)
Figure 25: +12VB input from load tester during test five at 648.8 W (29.4 mV)
Figure 26: +5V rail during test five at 648.8 W (38.4 mV)
Figure 27: +3.3 V rail during test five at 648.8 W (46.4 mV)
Let’s see if we can pull more than 650 W from this unit.