Protection Features Evaluation

OCP is within 130 % on both +12 V rails, but too high on the minor rails. There is no need for such high amperage at 5 V and 3.3 V. Moreover, OPP is conservatively set, not allowing the PSU to reach 1 kW output.

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 lower than the other two rails, so everything is fine here.

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 is too high.


Three spurs exceed the limits with the AVG detector, and one spur with the peak detector.