In Win Commander III 700 W Power Supply Review
Voltage Regulation Tests
Contents
The ATX12V specification states that positive voltages must be within 5% of their nominal values, and negative voltages must be within 10% of their nominal values. We consider a power supply as “flawless” if it shows voltages within 3% of their nominal values. In the table below, you can see the power supply voltages during our tests and, in the following table, the deviation, in percentage, of their nominal values.
The In Win Commander III 700 W presented excellent voltage regulation for its main positive outputs (+12 V, +5 V, and +3.3 V), always within 2.5% of their nominal values.
| Input | Test 1 | Test 2 | Test 3 | Test 4 | Test 5 |
| +12VA | +12.16 V | +12.12 V | +12.08 V | +12.02 V | +12.00 V |
| +12VB | +12.17 V | +12.12 V | +12.05 V | +11.99 V | +11.97 V |
| +5 V | +5.08 V | +5.06 V | +5.03 V | +5.01 V | +4.99 V |
| +3.3 V | +3.38 V | +3.34 V | +3.24 V | +3.22 V | +3.22 V |
| +5VSB | +4.96 V | +4.90 V | +4.83 V | +4.76 V | +4.78 V |
| -12 V | -11.57 V | -11.64 V | -11.72 V | -11.78 V | -11.84 V |
| Input | Test 1 | Test 2 | Test 3 | Test 4 | Test 5 |
| +12VA | 1.33% | 1.00% | 0.67% | 0.17% | 0.00% |
| +12VB | 1.42% | 1.00% | 0.42% | -0.08% | -0.25% |
| +5 V | 1.60% | 1.20% | 0.60% | 0.20% | -0.20% |
| +3.3 V | 2.42% | 1.21% | -1.82% | -2.42% | -2.42% |
| +5VSB | -0.80% | -2.00% | -3.40% | -4.80% | -4.40% |
| -12 V | 3.58% | 3.00% | 2.33% | 1.83% | 1.33% |
Let’s discuss the ripple and noise levels on the next page.
[nextpa
ge title=”Ripple and Noise Tests”]
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 In Win Commander III 700 W provided low ripple and noise levels, although a little bit higher than we’d like to see to consider this unit as “flawless” on this test.
| Input | Test 1 | Test 2 | Test 3 | Test 4 | Test 5 |
| +12VA | 28.8 mV | 38.4 mV | 45.8 mV | 58.4 mV | 68.4 mV |
| +12VB | 30.2 mV | 36.4 mV | 45.4 mV | 58.0 mV | 68.4 mV |
| +5 V | 19.8 mV | 18.4 mV | 17.2 mV | 17.2 mV | 18.4 mV |
| +3.3 V | 18.4 mV | 16.4 mV | 16.2 mV | 19.6 mV | 34.4 mV |
| +5VSB | 13.0 mV | 13.2 mV | 16.2 mV | 18.6 mV | 18.6 mV |
| -12 V | 32.8 mV | 36.8 mV | 36.8 mV | 42.6 mV | 50.4 mV |
Below you can see the waveforms of the outputs during test five.
Figure 25: +12VA input from load tester during test five at 703.4 W (68.4 mV)
Figure 26: +12VB input from load tester during test five at 703.4 W (68.4 mV)
Figure 27: +5V rail during test five at 703.4 W (18.4 mV)
Figure 28: +3.3 V rail during test five at 703.4 W (34.4 mV)
Let’s see if we can pull more than 700 W from this unit.