Aerocool E80-600 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 +12VA and +12VB inputs listed below are the two +12 V independent inputs from our load tester. During our tests, +12VA was connected to the power supply +12V1 rail, while +12VB was connected to the power supply +12V2 rail (EPS12V connector).
| 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 A (264 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 (6 W) | 10 A (60 W) |
| +3.3 V | 1 A (3.3 W) | 2 A (6.6 W) | 4 A (13.2 W) | 6 A (19.8 W) | 10 A (33 W) |
| +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 | 113.5 W | 238.2 W | 347.3 W | 470.6 W | 599.2 W |
| % Max Load | 18.9% | 39.7% | 57.9% | 78.4% | 99.9% |
| Room Temp. | 45.5° C | 45.7° C | 46.8° C | 43.5° C | 46.8° C |
| PSU Temp. | 50.8° C | 50.6° C | 51.2° C | 51.0° C | 53.6° C |
| Voltage Regulation | Pass | Pass | Pass | Pass | Pass |
| Ripple and Noise | Pass | Pass | Pass | Pass | Pass |
| AC Power | 134.6 W | 279.3 W | 413.8 W | 577.6 W | 772.0 W |
| Efficiency | 84.3% | 85.3% | 83.9% | 81.5% | 77.6% |
| AC Voltage | 115.3 V | 114.2 V | 113.2 V | 111.8 V | 109.8 V |
| Power Factor | 0.990 | 0.970 | 0.983 | 0.989 | 0.992 |
| Final Result | Pass | Pass | Pass | Pass | Pass |
The Aerocool E80-600 can really deliver its labeled wattage at high temperatures.
Efficiency wasn’t bad at all when we pulled up to 80% of its labeled wattage (480 W), between 81.5% and 85.3%, especially when you keep in mind that this is a low-cost product. At full load, however, efficiency dropped below the 80% mark, at 77.6%.
Voltages were always inside the allowed range.
Noise and ripple levels were always inside the allowed range, even though they were high at +12 V outputs with the power supply delivering 600 W. 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 outputs, and 50 mV for +5 V, +3.3 V, and +5VSB outputs. All values are peak-to-peak figures.
Figure 19: +12VA input from load tester during test five at 599.2 W (100.4 mV)
Figure 20: +12VB input from load tester during test five at 599.2 W (89.8 mV)
Figure 21: +5V rail during test five at 599.2 W (23.4 mV)
Figure 22: +3.3 V rail during test five at 599.2 W (32.2 mV)
We couldn’t pull a lot more from the E80-600. If we tried to pull more than 22 A from any of the +12 V inputs of our load tester, the unit shut down, and we could only increase +5 V and +3.3 V to 12 A each, and the total power we could pull from the reviewed unit was 608 W, with results not much different from the ones presented above. This shows that this unit has its protections tightly configured, which is good to see in a low-end power supply.