Rosewill Green Series 630 W (RG630-S12) Power Supply 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 how the reviewed unit behaved 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. On the “Total” row we are using the real amount of power being delivered, as measured by our load tester.
The +12V1 and +12V2 inputs listed below are the two +12 V independent inputs from our load tester. During this test both were connected to the single +12 V rail from this power supply.
| Input | Test 1 | Test 2 | Test 3 | Test 4 | Test 5 |
| +12V1 | 5 A (60 W) | 10 A (120 W) | 14.5 A (174 W) | 19 A (228 W) | 24 A (288 W) |
| +1 2V2 |
4.5 A (54 W) | 9.5 A (114 W) | 14 A (168 W) | 19 A (228 W) | 24 A (288 W) |
| +5V | 1 A (5 W) | 2 A (10 W) | 4 A (20 W) | 5 A (25 W) | 6 A (30 W) |
| +3.3 V | 1 A (3.3 W) | 2 A (6.6 W) | 4 A (13.2 W) | 5 A (16.5 W) | 6 A (19.8 W) |
| +5VSB | 1 A (5 W) | 1 A (5 W) | 1.5 A (7.5 W) | 2 A (10 W) | 2.5 A (12.5 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 | 134.5 W | 264.4 W | 392.6 W | 519.8 W | 626.8 W |
| % Max Load | 21.3% | 42.0% | 62.3% | 82.5% | 99.5% |
| Room Temp. | 45.9° C | 44.8° C | 45.2° C | 46.3° C | 45.4° C |
| PSU Temp. | 50.9° C | 50.6° C | 50.8° C | 52.2° C | 53.4° C |
| Voltage Regulation | Pass | Pass | Pass | Pass | Pass |
| Ripple and Noise | Pass | Pass | Pass | Pass | Pass |
| AC Power | 159.5 W | 311.0 W | 469.4 W | 633.0 W | 780.0 W |
| Efficiency | 84.3% | 85.0% | 83.6% | 82.1% | 80.4% |
| AC Voltage | 117.3 V | 116.0 V | 114.7 V | 113.2 V | 111.9 V |
| Power Factor | 0.966 | 0.986 | 0.993 | 0.994 | 0.998 |
| Final Result | Pass | Pass | Pass | Pass | Pass |
Rosewill Green Series 630 W can really deliver its labeled wattage at high temperatures.
Efficiency was high when we pulled up to 60% from its labeled wattage (i.e., up to 378 W), being between 83.6% and 84.3%. At 80% load (504 W) efficiency dropped to 82% and at full load (630 W) efficiency dropped to 80.4%.
Interesting enough Ecos Consulting gave this unit 80 Plus Bronze certification, however the manufacturer downgraded this unit to the standard 80 Plus certification, what we think was a smart move, because efficiency drops with temperature and the temperature used to collect data for the 80 Plus certification is unrealistic (read our Can We Trust the 80 Plus Certification? article for more details).
Voltages were always inside the allowed range, the same thing happening with noise and ripple, see below. All values are peak-to-peak figures and the maximum allowed is 120 mV for the +12 V outputs and 50 mV for the +5 V and +3.3 V outputs.
Figure 15: +12V1 input from load tester at 626.8 W (77.8 mV).
Figure 16: +12V2 input from load tester at 626.8 W (81.2 mV).
Figure 17: +5V rail with power supply delivering 626.8 W (37.2 mV).
Figure 18: +3.3 V rail with power supply delivering 626.8 W (17.8 mV).
Now let’s see if we could pull more than 630 W from this unit.