Huntkey Jumper 300G Planet3dnow.de Edition 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 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 powers listed for each test, you may find a different value than what is posted under “Total” below. Since each output can have a slight variation (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 this test, the +12VA input was connected to the power supply +12V1 rail, while the +12VB input was connected to the power supply +12V2 rail (EPS12V connector).
| Input | Test 1 | Test 2 | Test 3 | Test 4 | Test 5 |
| +12VA | 2 A (24 W) | 4 A (48 W) | 6 A (72 W) | 7.5 A (90 W) | 9.25 A (111 W) |
| +12VB | 1.5 A (18 W) | 3.75 A (45 W) | 5.5 A (66 W) | 7 A (84 W) | 9 A (108 W) |
| +5 V | 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 W) |
| +5VSB | 1 A (5 W) | 1 A (5 W) | 1 A (5 W) | 1.5 A (7.5 W) | 2 A (10 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 | 61.6 W | 121.3 W | 183.4 W | 237.4 W | 301.4 W |
| % Max Load | 20.5% | 40.4% | 61.1% | 79.1% | 100.5% |
| Room Temp. | 44.3° C | 43.3° C | 42.9° C | 43.0° C | 43.6° C |
| PSU Temp. | 48.7° C | 48.2° C | 47.5° C | 47.3° C | 47.3° C |
| Voltage Regulation | Pass | Pass | Pass | Pass | Pass |
| Ripple and Noise | Pass | Pass | Pass | Pass | Pass |
| AC Power | 69.3 W | 133.1 W | 201.9 W | 265.3 W | 341.3 W |
| Efficiency | 88.9% | 91.1% | 90.8% | 89.5% | 88.3% |
| AC Voltage | 117.4 V | 115.6 V | 115.2 V | 114.6 V | 113.5 V |
| Power Factor | 0.971 | 0.982 | 0.982 | 0.982 | 0.983 |
| Final Result | Pass | Pass | Pass | Pass | Pass |
The performance of the Huntkey Jumper 300G Planet3dnow.de Edition was outstanding. It can really deliver its labeled power at high temperatures.
Efficiency was between 88% and 91%, easily surpassing the minimum requirements for the 80 Plus Gold certification, which are 87% minimum at light (20%) and full (100%) loads, and 90% minimum at typical (50%) load.
Voltages were closer to their nominal values (3% regulation) during all tests, which is terrific to see. The ATX12V specification says positive voltages must be within 5% of their nominal values, and negative voltages must be within 10% of their nominal values.
Noise and ripple levels were low at all times. 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 20: +12VA input from load tester during test five at 301.4 W (23.6 mV)
Figure 21: +12VB input from load tester during test five at 301.4 W (28.4 mV)
Figure 22: +5V rail during test five at 301.4 W (14.6 mV)
Figure 23: +3.3 V rail during test five at 301.4 W (8.8 mV)
Let’s see if we can pull more than 300 W from this unit.