Internals

The initial uncovering of the PSU is quite straightforward with six screws holding it in place. However, removing the internals from the case completely is a tad more tricky. This is primarily due to the fact that the PSU's case actually is part of the heatsink and has a heatpipe system that would not look too shabby in a mid-range CPU cooler. Without being sure that there's sufficient airflow in the case, some quite extreme measures need to be taken for the vendor to be able to ship a product that has a 15-year warranty label.

Internally every single component that produces a somewhat notable amount of heat is covered by a heatsink. That does not only include MOSFETs and diodes, but also transformers. No surprise that all heatsinks are black to improve their heat dissipation capabilities, even by a couple percent.


The back of the main PCB is covered with a black plastic sheet that includes some thermal pads to conduct heat to some of the ICs to the chassis/heatsink. The most heat-producing elements on the back, the twelve 010N04NM6 transistor ICs, have a thermal pad that connects them to the main copper plate of the heatsink.


On the primary AC filtering side we have two Y capacitors and two X capacitors right on the AC connector PCB. Two more Y capacitors are on the main PCB, along with two chokes and a MOV. Instead of the dual diode bridge setup we're used to seeing in most PSUs, Cooler Master opted for an active MOSFET-based rectifier, which should increase efficiency further. It is, of course, attached to a sizeable heatsink as well.


The APFC transistors have their own dedicated heatsink on the side. As for the bulk capacitors, they are quite difficult to read. The only notable markings that are visible is that they are rated for 105 °C and 600 V. Overall, there are very few electrolytic capacitors in the unit. Most of them are solid state ones, which are (among other things) typically associated with longer lifespan.


On the opposite side we find a daughterboard with a lot of active components. It includes a MC9S08SH8CWJ microcontroller, a C8051F380 MCU, a WT7502R supervisor circuit and an NSi82 driver chip.


The modular cable board also has plenty of additional filtering caps.

The overall build quality and soldering of the unit is extremely good.