OCZ Fatal1ty 1000W PSU Review
As we mentioned in the previous page, OCZ went with a translucent 140mm LED fan for the cooling needs of the Fatal1ty unit. However, we were astounded to see that the fan’s manufacturer is Hong Hua, a virtually unknown company amongst enthusiasts. Little information could be found regarding the fan, except that it has a ball bearing.
The OEM behind the Fatal1ty 1000W unit is Sirfa, a well-known and experienced manufacturer of high performance power supplies. It is also interesting that OCZ sleeved the cables all the way down to the PCB.
As usual, the filtering stage begins at the back of the A/C receptacle and continues onto the unit’s PCB. There are four Y capacitors, two X capacitors, two filtering chokes and a surge suppressing MOV. Although the filtering stage is merely equivalent with that proposed by the design guides, it undeniably is sufficient for the needs of this unit.
Two Nippon Chemi-Con 400V/390μF capacitors can be found on the primary side of the unit, with the secondary side capacitors all being supplied by Nippon Chemi-Con as well. The APFC FETs are also placed on a separate heatsink instead alongside the primary side components.
We were astonished by how small the heatsinks of this unit are, especially considering the 1000W rated power output. The primary side heatsinks are nothing more than a small slab of metal, which provides almost no heat dissipation surface at all. The secondary side heatsink is notably better, even though it still appears to be small considering the unit’s great maximum output.
The daughterboard PCB which houses the modular cable connectors is also home to the DC to DC conversion circuits. This causes a little bit of cable clutter as a few cables from the 3.3V line and 5V line need to return back to the main PCB, both for the unit’s safety circuits and for use by the native cables.