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Home » Power
OCZ ProXStream 1000 W Power Supply Review
Author: Gabriel Torres
Type: Reviews Last Updated: February 9, 2008
Page: 2 of 9
A Look Inside The OCZ ProXStream 1000 W

We decided to disassemble this power supply to see what it looks like inside, how it is designed, and what components are used. Please read our Anatomy of Switching Power Supplies tutorial to understand how a power supply works inside and to compare this power supply to others.

This page will be an overview, and then in the following pages we will discuss in detail the quality and ratings of the components used.

We can point out several differences between this power supply and a low-end (a.k.a. “generic”) one: the construction quality of the printed circuit board (PCB); the use of more components on the transient filtering stage; the active PFC circuitry; the power rating of all components; the design; etcetera.

OCZ ProXStream 1000 W
click to enlarge
Figure 4: Inside OCZ ProXStream 1000 W.

As we mentioned previously, this power supply uses two printed circuit boards stacked, as you can see in Figure 5.

OCZ ProXStream 1000 W
click to enlarge
Figure 5: Inside OCZ ProXStream 1000 W.

On the lower board we have the primary section of the power supply plus the +5VSB power supply – this output, also known as standby, is always independent from the rest of the power supply, being produced by a separated circuit, because this output is turned on all the time, contrary to the rest of the power supply, which is turned on only when you turn on your PC. The primary section includes the transient filtering stage, the active PFC and the switching transistors.

OCZ ProXStream 1000 W
click to enlarge
Figure 6: Lower printed circuit board.

On the upper board we have the transformer and the secondary stage, which includes rectifying, filtering and protection stages.

OCZ ProXStream 1000 W
click to enlarge
Figure 7: Upper printed circuit board.

On this page we will take an in-depth look at the primary stage of this power supply.

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