Internals

Opening the EDGE 1300 W requires removing a handful of screws, eight of which are located under the stickers on the PSU's sides.


The PCB is made specifically for this type of layout - there's no reusing some existing PCB from an already available design and then soldering the connector daughterboard to extend the main PCB. The same PCB is used for the lower power EDGE units. The uniform PCB includes some electrolytic capacitors for additional filtering made by Nippon Chemi-Con as well as some solid state polymer capacitors as well.


For the AC filtering we find one X capacitor and two Y capacitors right on the AC socket. They are accompanied by one additional X capacitor, two chokes and a MOV on the corner of the PCB.


The +3.3V and +5V DC-DC converter board is driven by the 3NA3R4 and 3N5R0 MOSFETs.


The supervisor circuit used in the EDGE 1300 W is the Weltrend WT7527, mounted on a separate board. It also accommodates the CM6901 LLC resonant controller.


The built-in USB hub only feeds power from the PSU and otherwise is completely disconnected in terms of data transfer.


Contrary to the unwritten Japanese-capacitors-only rule, for bulk capacitors the EDGE uses two German EPCOS units (rated at 680 uF / 400 V).


The build quality and soldering of the unit looks very good. Any potentially loose internal cables or noise-prone components have been generously covered in rubber.


While the lower powered EDGE units include a fan that spins up to only 2000 RPM, the most powerful EDGE 1300 W features the Hong Hua HA1225H12F-Z FDB fan rated to spin at up to 2400 RPM. While 80 Plus Platinum power supplies are very efficient, going beyond the 1kW mark in such a tight space really does require some additional cooling capacity to ensure the longevity of the unit and allow Lian Li to offer the 10-year warranty. The fan is partially covered to help direct the airflow where it's needed the most.