Load Regulation
| Test | 12V | 5V | 3.3V | 5VSB | DC/AC (Watts) | Efficiency | Fan Speed (RPM) | PSU Noise (dB[A]) | Temps (In/Out) | PF/AC Volts |
| 10% | 6.957A | 1.995A | 1.986A | 0.98A | 104.932 | 88.987% | 0 | <6.0 | 44.39C | 0.961 |
| 11.980V | 5.012V | 3.323V | 5.101V | 117.917 | 40.17C | 114.84V | ||||
| 20% | 14.932A | 2.994A | 2.982A | 1.178A | 209.915 | 92.155% | 0 | <6.0 | 45.32C | 0.977 |
| 11.988V | 5.01V | 3.32V | 5.092V | 227.784 | 40.70C | 114.8V | ||||
| 30% | 23.238A | 3.495A | 3.482A | 1.377A | 314.929 | 92.615% | 0 | <6.0 | 46.63C | 0.982 |
| 12.001V | 5.008V | 3.317V | 5.083V | 340.04 | 41.63C | 114.76V | ||||
| 40% | 31.499A | 3.996A | 3.983A | 1.577A | 419.52 | 92.491% | 1206 | 28.3 | 41.82C | 0.984 |
| 12.011V | 5.006V | 3.314V | 5.074V | 453.576 | 47.33C | 114.72V | ||||
| 50% | 39.472A | 4.997A | 4.983A | 1.777A | 524.874 | 92.118% | 1203 | 28.2 | 42.09C | 0.984 |
| 12.018V | 5.003V | 3.311V | 5.065V | 569.782 | 48.13C | 114.69V | ||||
| 60% | 47.366A | 6A | 5.985A | 1.978A | 629.369 | 91.665% | 1200 | 28.2 | 42.56C | 0.986 |
| 12.024V | 5V | 3.309V | 5.056V | 686.593 | 49.07C | 114.65V | ||||
| 70% | 55.211A | 7.004A | 6.989A | 2.179A | 734.7 | 90.652% | 1878 | 41.1 | 43.13C | 0.987 |
| 12.055V | 4.998V | 3.306V | 5.047V | 810.459 | 50.17C | 114.6V | ||||
| 80% | 63.117A | 8.001A | 7.994A | 2.282A | 839.471 | 90.025% | 1877 | 41.1 | 43.59C | 0.988 |
| 12.066V | 4.995V | 3.302V | 5.039V | 932.491 | 51.57C | 114.57V | ||||
| 90% | 71.417A | 8.51A | 8.485A | 2.384A | 944.891 | 89.324% | 1875 | 41.1 | 44.31C | 0.99 |
| 12.076V | 4.994V | 3.3V | 5.032V | 1057.819 | 53.23C | 114.52V | ||||
| 100% | 79.442A | 9.013A | 9.008A | 2.989A | 1049.7 | 88.43% | 1874 | 41.1 | 45.60C | 0.991 |
| 12.085V | 4.992V | 3.297V | 5.017V | 1187.044 | 55.33C | 114.47V | ||||
| 110% | 87.348A | 10.02A | 10.11A | 2.993A | 1154.317 | 87.488% | 2241 | 45.1 | 46.69C | 0.991 |
| 12.090V | 4.99V | 3.293V | 5.012V | 1319.415 | 57.51C | 114.43V | ||||
| CL1 | 0.116A | 12.039A | 11.976A | 0A | 101.287 | 85.073% | 1211 | 28.3 | 40.13C | 0.961 |
| 11.994V | 5V | 3.315V | 5.115V | 119.06 | 54.40C | 114.83V | ||||
| CL2 | 0.115A | 20.013A | 0A | 0A | 101.348 | 83.672% | 1215 | 28.3 | 40.91C | 0.961 |
| 11.990V | 4.995V | 3.324V | 5.117V | 121.122 | 50.65C | 114.83V | ||||
| CL3 | 0.115A | 0A | 19.935A | 0A | 67.374 | 78.953% | 1216 | 28.4 | 40.61C | 0.945 |
| 11.981V | 5.013V | 3.311V | 5.114V | 85.334 | 47.72C | 114.84V | ||||
| CL4 | 86.873A | 0A | 0A | 0.001A | 1049.491 | 89.116% | 2243 | 45.1 | 45.09C | 0.99 |
| 12.081V | 5.004V | 3.306V | 5.074V | 1177.67 | 52.75C | 114.48V |
Load regulation is loose on the 12V rail, while we measured within 1% on the same rail in the 1200W model. We used the same cables and sense pins on both PSUs, so the problem lies entirely on the PSU’s platform. This means that HKC should look closer at the performance variations of its manufacturing lines’ products.
Ripple Suppression
| Test | 12V | 5V | 3.3V | 5VSB | Pass/Fail |
| 10% Load | 8.9 mV | 7.4 mV | 8.7 mV | 6.1 mV | Pass |
| 20% Load | 10.5 mV | 21.8 mV | 17.6 mV | 6.6 mV | Pass |
| 30% Load | 9.6 mV | 7.6 mV | 9.9 mV | 7.4 mV | Pass |
| 40% Load | 12.3 mV | 7.7 mV | 10.6 mV | 7.7 mV | Pass |
| 50% Load | 11.6 mV | 8.6 mV | 10.9 mV | 8.5 mV | Pass |
| 60% Load | 12.4 mV | 8.5 mV | 11.3 mV | 9.1 mV | Pass |
| 70% Load | 14.4 mV | 9.8 mV | 12.8 mV | 10.2 mV | Pass |
| 80% Load | 14.4 mV | 9.9 mV | 14.3 mV | 10.7 mV | Pass |
| 90% Load | 13.9 mV | 10.9 mV | 14.9 mV | 12.3 mV | Pass |
| 100% Load | 22.3 mV | 11.5 mV | 19.2 mV | 23.1 mV | Pass |
| 110% Load | 22.9 mV | 13.1 mV | 20.5 mV | 25.5 mV | Pass |
| Crossload 1 | 16.3 mV | 8.8 mV | 11.0 mV | 6.1 mV | Pass |
| Crossload 2 | 12.6 mV | 13.5 mV | 9.3 mV | 5.7 mV | Pass |
| Crossload 3 | 10.1 mV | 7.4 mV | 10.3 mV | 5.4 mV | Pass |
| Crossload 4 | 19.9 mV | 10.2 mV | 19.2 mV | 11.4 mV | Pass |
Ripple suppression is good on all rails.
Pages:
ha this is super weird! The one with the lower noise I guess!
Hello,
I have a strange thing to report about this exact model.
I thought the fan on the unit I had was dying because of a somewhat scratching noise when disabling smart fan off so I ordered a replacement unit from Amazon
The replacement unit is totally different from the one that I have. I have uploaded two photos of actual units and their boxes.
https://photos.app.goo.gl/UaZksh86vbbGtET96
https://photos.app.goo.gl/CFjRCmtTqseHQDAu6
My previous unit seems to have the same pcb as in your review, only with two brown Nippon chemicon 470uf instead of your’s black Nichicon.
The newer unit seems to have:
– the fan partially wrapped in plastic in order to restrict airflow (I Guess)
– black thick heatsink similar to those of a cwt puq I had
– just one black Nichicon with 400v stamped on it and GG (M) (no micro Farad indication that I can get a glimpse of)
– different main transformer in a black monolith enclosure saying pq4040-a 2316 on it
– three big nude coils similar to those of PFC (but I am no expert)
– a fan that is even noisier (it resemble a track) when activated.
– different advertisement about efficiency and fan curve on the box (see the photo attached)
– cables pcb is disposed differently
I can attach a sound print in mp3 of both if needed.
I thought my fan was already defective but it seems this is even worse in a way. Wich one do you think would be better to keep?