Load Regulation
It measures the stability of the output voltage when the load connected to the power supply varies.
| Test | 12V | 5V | 3.3V | 5VSB | DC/AC (Watts) | Efficiency | Fan Speed (RPM) | PSU Noise (dB[A]) | Temps (In/Out) | PF/AC Volts |
| 10% | 6.470A | 1.981A | 1.971A | 0.985A | 99.982 | 88.692% | 401 | <6.0 | 40.38°C | 0.977 |
| 12.114V | 5.05V | 3.348V | 5.077V | 112.729 | 45.54°C | 115.07V | ||||
| 20% | 13.963A | 2.972A | 2.958A | 1.186A | 199.924 | 92.013% | 402 | <6.0 | 40.75°C | 0.988 |
| 12.105V | 5.048V | 3.347V | 5.059V | 217.278 | 47.26°C | 115.03V | ||||
| 30% | 21.818A | 3.468A | 3.453A | 1.388A | 299.968 | 92.608% | 404 | <6.0 | 41.31°C | 0.991 |
| 12.096V | 5.047V | 3.345V | 5.042V | 323.913 | 50.02°C | 115V | ||||
| 40% | 29.639A | 3.964A | 3.948A | 1.593A | 399.462 | 92.521% | 405 | <6.0 | 41.74°C | 0.991 |
| 12.087V | 5.046V | 3.343V | 5.024V | 431.753 | 53.63°C | 114.96V | ||||
| 50% | 37.147A | 4.956A | 4.938A | 1.799A | 499.17 | 92.213% | 405 | <6.0 | 42.25°C | 0.994 |
| 12.078V | 5.045V | 3.342V | 5.004V | 541.322 | 57.27°C | 114.93V | ||||
| 60% | 44.733A | 5.949A | 5.928A | 2A | 599.661 | 91.754% | 405 | <6.0 | 42.95°C | 0.996 |
| 12.069V | 5.044V | 3.34V | 4.984V | 653.55 | 61.76°C | 114.9V | ||||
| 70% | 52.266A | 6.941A | 6.919A | 2.216A | 699.423 | 91.248% | 459 | <6.0 | 43.45°C | 0.997 |
| 12.060V | 5.044V | 3.339V | 4.963V | 766.507 | 66.41°C | 114.87V | ||||
| 80% | 59.875A | 7.934A | 7.911A | 2.325A | 799.438 | 90.232% | 848 | 22 | 43.7°C | 0.998 |
| 12.051V | 5.041V | 3.337V | 4.946V | 885.979 | 64.56°C | 114.84V | ||||
| 90% | 67.832A | 8.434A | 8.397A | 2.433A | 899.246 | 89.64% | 1058 | 27.1 | 44.1°C | 0.998 |
| 12.041V | 5.039V | 3.334V | 4.932V | 1003.172 | 64.09°C | 114.8V | ||||
| 100% | 75.599A | 8.935A | 8.913A | 3.065A | 999.259 | 88.933% | 1430 | 36.3 | 45.41°C | 0.998 |
| 12.032V | 5.036V | 3.332V | 4.895V | 1123.616 | 63.27°C | 114.76V | ||||
| 110% | 83.312A | 9.933A | 10A | 3.071A | 1099.863 | 88.021% | 2175 | 47.5 | 46.55°C | 0.998 |
| 12.022V | 5.033V | 3.329V | 4.885V | 1249.495 | 60.79°C | 114.72V | ||||
| CL1 | 0.115A | 13.111A | 13.006A | 0A | 111.288 | 83.085% | 757 | 18.2 | 41.61°C | 0.978 |
| 12.111V | 5.049V | 3.36V | 5.097V | 133.945 | 53.96°C | 115.06V | ||||
| CL2 | 0.114A | 19.808A | 0A | 0A | 101.383 | 80.702% | 1754 | 41.3 | 40.79°C | 0.977 |
| 12.114V | 5.048V | 3.348V | 5.108V | 125.626 | 45.92°C | 115.06V | ||||
| CL3 | 0.114A | 0A | 19.599A | 0A | 67.379 | 75.567% | 1594 | 40.4 | 40.2°C | 0.976 |
| 12.111V | 5.051V | 3.367V | 5.106V | 89.167 | 43.21°C | 115.07V | ||||
| CL4 | 83.056A | 0A | 0A | 0A | 999.832 | 89.751% | 1070 | 27.1 | 45.53°C | 0.998 |
| 12.038V | 5.041V | 3.325V | 5.044V | 1114.006 | 60.93°C | 114.76V |
Load regulation is within 1% on all primary rails, even 3.3V. In my 1200W sample, the 3.3V rail had loose 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 |
| 20W | 1.225A | 0.495A | 0.493A | 0.195A | 19.997 | 70.594% | 398 | <6.0 | 36.57°C | 0.897 |
| 12.120V | 5.048V | 3.348V | 5.118V | 28.327 | 43.02°C | 115.1V | ||||
| 40W | 2.697A | 0.693A | 0.69A | 0.293A | 39.996 | 82.011% | 402 | <6.0 | 37.31°C | 0.951 |
| 12.119V | 5.05V | 3.348V | 5.112V | 48.769 | 42.9°C | 115.09V | ||||
| 60W | 4.170A | 0.891A | 0.887A | 0.392A | 59.996 | 85.39% | 401 | <6.0 | 38.69°C | 0.962 |
| 12.118V | 5.049V | 3.348V | 5.107V | 70.261 | 43.78°C | 115.08V | ||||
| 80W | 5.637A | 1.089A | 1.084A | 0.49A | 79.931 | 88.536% | 401 | <6.0 | 39.28°C | 0.976 |
| 12.116V | 5.05V | 3.348V | 5.101V | 90.281 | 44.16°C | 115.08V |
A glance at the light-load table is always useful, as the PSU typically operates at light loads.
Ripple Suppression
Ripple in power supplies refers to the small, unwanted AC voltage fluctuations superimposed on the DC output. It occurs due to imperfect filtering during the AC-to-DC conversion. Lower ripple is highly preferable because it ensures a cleaner, more stable DC output, reducing noise and potential interference in sensitive electronics, improving performance, and extending the lifespan of components. High ripple can cause instability, overheating, or damage to connected devices.
| Test | 12V | 5V | 3.3V | 5VSB | Pass/Fail |
| 10% Load | 21.6 mV | 13.8 mV | 13.2 mV | 10.7 mV | Pass |
| 20% Load | 24.2 mV | 14.1 mV | 14.1 mV | 11.6 mV | Pass |
| 30% Load | 25.5 mV | 13.8 mV | 13.0 mV | 11.4 mV | Pass |
| 40% Load | 26.9 mV | 13.9 mV | 13.7 mV | 11.3 mV | Pass |
| 50% Load | 28.7 mV | 13.9 mV | 13.5 mV | 11.9 mV | Pass |
| 60% Load | 30.5 mV | 14.0 mV | 13.4 mV | 12.1 mV | Pass |
| 70% Load | 32.8 mV | 14.7 mV | 13.7 mV | 12.8 mV | Pass |
| 80% Load | 27.6 mV | 15.1 mV | 14.6 mV | 12.6 mV | Pass |
| 90% Load | 28.4 mV | 16.0 mV | 14.7 mV | 13.6 mV | Pass |
| 100% Load | 28.4 mV | 15.5 mV | 14.2 mV | 12.3 mV | Pass |
| 110% Load | 29.1 mV | 15.0 mV | 14.3 mV | 13.2 mV | Pass |
| Crossload 1 | 22.4 mV | 14.5 mV | 13.9 mV | 10.0 mV | Pass |
| Crossload 2 | 22.7 mV | 17.0 mV | 13.6 mV | 10.1 mV | Pass |
| Crossload 3 | 20.8 mV | 14.6 mV | 14.8 mV | 9.8 mV | Pass |
| Crossload 4 | 27.7 mV | 13.7 mV | 14.3 mV | 11.1 mV | Pass |
Ripple suppression is good overall.
Here cybenetics reports
850w which is not very good
https://www.cybenetics.com/evaluations/psus/2580/
1000w Malfunctioning protections that don’t engage in time before the minor rails experience a huge voltage drop out of spec.
https://www.cybenetics.com/evaluations/psus/2575/
Basically i wouldnt do none of these
Any chance for review Thermaltake SFX ATX 3.1 ?
If we have it in our database sure.