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Protection Features
Check out our PSUs 101 article to learn more about PSU protection features.
|
OCP (Cold @ 25°C) |
12V: 87.2A (123.16%), 11.879V 5V: 31.5A (157.5%), 4.946V 3.3V: 31.8A (159%), 3.276V 5VSB: 5.1A (170%), 4.977V |
|
OCP (Hot @ 43°C) |
12V: 87.4A (123.45%), 11.9V 5V: 31.5A (157.5%), 4.948V 3.3V: 31.7A (158.5%), 3.269V 5VSB: 5.1A (170%), 4.981V |
|
OPP (Cold @ 28°C) |
1049.07W (123.42%) |
|
OPP (Hot @ 45°C) |
1053.31W (123.92%) |
|
OTP |
✓ (140°C @ 12V Heat Sink) |
|
SCP |
12V to Earth: ✓ 5V to Earth: ✓ 3.3V to Earth: ✓ 5VSB to Earth: ✓ -12V to Earth: ✓ |
|
PWR_OK |
Proper operation |
|
NLO |
✓ |
|
SIP |
Surge: MOV Inrush: NTC Thermistor & Bypass relay |
Over power protection is adequately set, and the same goes for the OCP at 12V. On the contrary, OCP is highly set on the minor rails for no reason. Lastly, all other protection features are present and work well.
DC Power Sequencing
According to Intel’s most recent Power Supply Design Guide (revision 1.4), the +12V and 5V outputs must be equal to or greater than the 3.3V rail at all times. Unfortunately, Intel doesn't mention why it is so important to always keep the 3.3V rail's voltage lower than the levels of the other two outputs.
The 3.3V rail is always lower than the other two, so there is no problem according to the ATX spec's requirements.
Cross Load Tests
To generate the following charts, we set our loaders to auto mode through custom-made software before trying more than 25,000 possible load combinations with the +12V, 5V, and 3.3V rails. The deviations in each of the charts below are calculated by taking the nominal values of the rails (12V, 5V, and 3.3V) as point zero. The ambient temperature during testing was between 30 to 32 degrees Celsius (86 to 89.6 degrees Fahrenheit).
Load Regulation Charts
Efficiency Graph
Ripple Graphs
The lower the power supply's ripple, the more stable the system will be and less stress will also be applied to its components.
Infrared Images
We apply a half-load for 10 minutes with the PSU's top cover and cooling fan removed before taking photos with a modified FLIR E4 camera able to deliver an IR resolution of 320x240 (76,800 pixels).
The heat sinks on the board that hosts the 12V FETs are the hottest part, with the main transformer following. Still, the operating temperatures are kept low.
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