Protection Features Evaluation

All rails have high OCP triggering points. Moreover, I couldn't shut the PSU down by overloading +12 V, so I quit once I noticed the voltage dropping low. On the other hand, the PSU shut down at a conservatively set point during the OPP evaluation.

DC Power Sequencing

According to Intel's most recent Power Supply Design Guide (revision 1.4), the +12 V and +5 V rails must have voltages equal to or greater than the +3.3 V rail's output at all times. For our first measurement, we turn the unit off and switch it back on without a load on any of the rails.



The 3.3 V rail is always at a lower voltage than the other two rails.

EMC Pre-Compliance Testing - Average and Peak EMI Detector Results

Electromagnetic Compatibility (EMC) is the ability of a device to operate properly in its environment without disrupting the proper operation of other close-by devices.

Electromagnetic Interference (EMI) stands for the electromagnetic energy a device emits, and it can cause problems in other close-by devices if too high.


EMI emissions are incredibly low. The PSU's EMI filter does an excellent job.