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% | 8.556A | 1.994A | 1.967A | 0.986A | 124.967 | 85.745% | 1188 | 34 | 40.01°C | 0.987 |
| 12.080V | 5.015V | 3.356V | 5.072V | 145.495 | 42.8°C | 114.71V | ||||
| 20% | 18.138A | 2.992A | 2.953A | 1.187A | 249.972 | 89.994% | 1227 | 34.5 | 40.57°C | 0.995 |
| 12.078V | 5.013V | 3.353V | 5.055V | 277.769 | 43.75°C | 114.83V | ||||
| 30% | 28.019A | 3.493A | 3.447A | 1.389A | 374.436 | 91.074% | 1312 | 36.7 | 41.2°C | 0.997 |
| 12.077V | 5.011V | 3.351V | 5.04V | 411.137 | 45.26°C | 114.79V | ||||
| 40% | 37.962A | 3.993A | 3.941A | 1.593A | 499.617 | 91.139% | 1446 | 39.3 | 41.77°C | 0.998 |
| 12.076V | 5.01V | 3.35V | 5.024V | 548.195 | 46.31°C | 114.74V | ||||
| 50% | 47.570A | 4.992A | 4.929A | 1.798A | 624.949 | 90.78% | 1603 | 41.4 | 42.36°C | 0.998 |
| 12.076V | 5.008V | 3.348V | 5.007V | 688.412 | 47.29°C | 114.69V | ||||
| 60% | 57.118A | 5.994A | 5.919A | 2A | 749.454 | 90.239% | 1759 | 43.8 | 42.54°C | 0.998 |
| 12.074V | 5.006V | 3.346V | 4.991V | 830.518 | 47.87°C | 114.65V | ||||
| 70% | 66.731A | 6.995A | 6.909A | 2.212A | 874.762 | 89.539% | 1937 | 46.6 | 43.48°C | 0.998 |
| 12.074V | 5.005V | 3.344V | 4.973V | 976.959 | 49.45°C | 114.6V | ||||
| 80% | 76.338A | 7.994A | 7.899A | 2.319A | 999.56 | 88.744% | 1974 | 47.8 | 43.97°C | 0.999 |
| 12.074V | 5.003V | 3.342V | 4.959V | 1126.34 | 50.89°C | 114.55V | ||||
| 90% | 86.337A | 8.496A | 8.38A | 2.427A | 1124.957 | 87.847% | 1981 | 47.9 | 44.73°C | 0.999 |
| 12.074V | 5.002V | 3.342V | 4.944V | 1280.6 | 52.79°C | 114.5V | ||||
| 100% | 96.265A | 8.997A | 8.89A | 2.536A | 1249.704 | 86.831% | 1985 | 47.9 | 45.95°C | 0.999 |
| 12.076V | 5.001V | 3.341V | 4.929V | 1439.232 | 55.52°C | 114.43V | ||||
| 110% | 105.908A | 9.998A | 9.97A | 2.543A | 1375.117 | 85.555% | 1986 | 47.9 | 46.79°C | 0.999 |
| 12.079V | 5V | 3.341V | 4.917V | 1607.281 | 58.51°C | 114.38V | ||||
| CL1 | 0.114A | 11.993A | 11.804A | 0A | 101.28 | 81.986% | 0 | <6.0 | 46.46°C | 0.984 |
| 12.088V | 5.019V | 3.363V | 5.094V | 123.372 | 40.22°C | 114.64V | ||||
| CL2 | 0.114A | 19.898A | 0A | 0A | 101.337 | 80.077% | 1300 | 36.3 | 41.41°C | 0.983 |
| 12.094V | 5.023V | 3.356V | 5.096V | 126.433 | 46.25°C | 114.62V | ||||
| CL3 | 0.114A | 0A | 19.579A | 0A | 67.395 | 74.572% | 1190 | 34 | 40.19°C | 0.977 |
| 12.092V | 5.012V | 3.372V | 5.096V | 90.375 | 43.42°C | 114.89V | ||||
| CL4 | 103.601A | 0A | 0A | 0A | 1249.547 | 87.339% | 1995 | 48.2 | 45.79°C | 0.999 |
| 12.061V | 5.007V | 3.347V | 5.017V | 1430.714 | 59.42°C | 114.46V |
Load regulation is tight on all rails but 5VSB, where it doesn’t matter much.
Ripple Suppression
| Test | 12V | 5V | 3.3V | 5VSB | Pass/Fail |
| 10% Load | 15.4 mV | 14.6 mV | 15.4 mV | 15.5 mV | Pass |
| 20% Load | 15.7 mV | 15.3 mV | 14.6 mV | 14.5 mV | Pass |
| 30% Load | 16.4 mV | 15.2 mV | 15.1 mV | 16.1 mV | Pass |
| 40% Load | 15.9 mV | 16.2 mV | 15.7 mV | 16.6 mV | Pass |
| 50% Load | 18.2 mV | 16.2 mV | 15.7 mV | 14.9 mV | Pass |
| 60% Load | 19.1 mV | 17.4 mV | 18.7 mV | 20.1 mV | Pass |
| 70% Load | 21.3 mV | 18.4 mV | 17.3 mV | 18.3 mV | Pass |
| 80% Load | 24.4 mV | 19.4 mV | 21.0 mV | 18.9 mV | Pass |
| 90% Load | 31.1 mV | 21.1 mV | 22.0 mV | 18.0 mV | Pass |
| 100% Load | 55.6 mV | 22.5 mV | 25.5 mV | 19.3 mV | Pass |
| 110% Load | 63.9 mV | 24.6 mV | 25.3 mV | 18.6 mV | Pass |
| Crossload 1 | 14.8 mV | 20.7 mV | 23.7 mV | 14.0 mV | Pass |
| Crossload 2 | 17.5 mV | 20.0 mV | 16.9 mV | 13.3 mV | Pass |
| Crossload 3 | 14.0 mV | 21.3 mV | 20.0 mV | 14.1 mV | Pass |
| Crossload 4 | 56.8 mV | 20.3 mV | 19.9 mV | 18.5 mV | Pass |
Ripple suppression is mediocre at 12V, the most important rail. As you can see in the table above, ripple gets a notable increase from 90% to the 100% load test, which shows that the platform is stressed at full load.
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Is it just me or could the PSU have performed significantly better in ripple suppression and transient response if they hadn’t gone with such an extremely low amount of secondary caps on the secondary side?
I count 27 caps or which many are fairly small. Other manufacturers like Seasonic are liable to use over 50 caps in that power class.
Yes the form factor is small but they definitely had space for more caps on the breakout board. They cheaped out, which is a pity.
Aris would you review Antec SF850X & Gamemax GX-1050 PRO ?
if they send them to me sure 🙂
UPMOST? XD
It’s nice to see that there is so much optimism and imagination around.
This should lead to improvement.