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Home > Hardware Reviews > PC Parts

Monday, November 04, 2013
OCZ Fatal1ty 750W PSU

3. Under the hood

The power supply utilizes a single 12V rail design to deliver most of the power for the unit. It can supply up to 62.5A at 12 V, its entire capacity (750 watts), at this voltage. The minor rails have 150W maximum combined output, which will cover all the needs of a modern system, and the 3.0 A maximum that the 5VSB can output will suffice in most cases.

The maximum combined output of the PSU is 750 watts:

Below you see the list of the provided cables:

Cables
20+4-pin ATX
1
4+4-pin EPS/CPU
2
6+2-pin PCI-E
4
4-pin peripheral
6
5-pin SATA
5
Floppy
1
 

Below you see the 13.5cm thermally controlled Globe Fan. It is a a DC12v model with 0.45A rating and has a max RPM of approximately 1600RPM"

Below you see a picture of the internal of the PSU:

Click for large view

The components and their arrangement on the black PCB contribute to an overall clean layout, with two notable heatsinks to separate the three main sections of the PSU: 1) the Active PFC (APFC) section, which is actually a AC/DC converter controls the current supplied to the PSU so that the current waveform is proportional to the mains voltage waveform; 2) the transformer section (middle), which isolates primary from secondary side and converts (steps down) the voltage which feeds the secondary rectifiers that generate all DC outputs (+12V, 5V, 3.3V, 5VSB, -12V) and; 3) the output rectifiers and filters, which rectify and filter the high frequency switching waveform created by the MOSFETs and fed through the secondary of the main transformer.

The primary electrolytic capacitor is a Nippon Chemi-Con rated for 105°C and 400v / 470µF. However, the other 105°C rated parts are not Japanese manufactured units.

Some components are protected by white adhesive and wiring is tied in place where appropriate.

The PSU supports Over Voltage Protection, which ensures that the outputs do not exceed a set level. Over power protection ensures the unit stays within safe limits and short-circuit protection is also present which powers off the PSU should any of the 3.3v, 5v or 12v rails short any other rail or ground. In addition, over temperature and over current circuitry are also included.




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