OCZ Fatal1ty 700 W Power Supply Review

Transient Filtering Stage

As we have mentioned in other articles and reviews, the first place we look when opening a power supply for a hint about its quality, is its filtering stage. The recommended components for this stage are two ferrite coils, two ceramic capacitors (Y capacitors, usually blue), one metalized polyester capacitor (X capacitor), and one MOV (Metal-Oxide Varistor). Very low-end power supplies use fewer components, usually removing the MOV and the first coil.

The transient filtering stage from this power supply is flawless. The big metallic piece that looks like an ordinary AC connector is in fact a complete line filter. This power supply has one extra ferrite coil and two extra X capacitors but no Y capacitors. We wouldn’t worry about this for two reasons, first the presence of the line filter, which has these components inside, and secondly because after the rectification bridge this power supply has one more X capacitor and two Y capacitors.

Figure 8: Transient filtering stage (part 1).

Figure 9: Transient filtering stage (part 2).

Now let’s have a more detailed look inside OCZ Fatal1ty 700 W.