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OCZ Stealth X Stream 600W Review

paulktreg    -   June 16, 2008
Category: Power Supplies
Price: $89.99
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Introduction:

This is the second power supply I have reviewed with the new overclockersclub testing methodology and I thought it would provide a good contrast to the Atrix 500T tested in the first review, with our new test regime. OCZ are quite possibly one of the best known names in the PC hardware business and are renowned for manufacturing high quality memory modules, power supplies and cooling fans. Because this unit was pulled from a working system, the usual closer look will be abbreviated in this review. Will the Stealth Xtream continue the OCZ tradition of performance, or just be one of the runners in the pack?

Closer Look:

The blue/black themed packaging is sturdy and well designed. A wealth of information is given on the packaging, including the specification and a wide range of features. Inside the packaging, you find the power supply, power cord, instruction/user manual and four case mounting screws. The power supply itself looks neat and tidy with what is now the ever popular gloss black paint finish. The large 120mm black cooling fan and black grille, compliment the black theme of the power supply. You can see the large grey label on the side of the unit which carries the full specification and 12V distribution list, along with the logos of all the international build standards. All the cables are sleeved up to and in between connectors and held in place with heat shrink. There is also a Velcro strap to help keep all the cables together. The main exhaust is a honeycombed grille, which includes the on/off switch and the mains input socket to one side. Underneath the mains input, is a “Full Range” label, which I can only presume means the power supply will accept a universal AC voltage. The OCZ Stealth X Stream 600W is overall, a neat and well built unit, with excellent labelling and neat cables.

 

 

 

 

 

 

 

 

 

 

 

 

The power supply has a good selection of connectors, all with sleeved cabling, which I will mention again later.

 

 

While I was inside the unit, I was curious to see what brand electrolytic capacitors are used, but they appear to be a mixture, including CapXon and OST. CapXon for one are widely regarded as low end poor quality and I cannot find any information for OST - a bad sign?

Internal Layout showing:

 

A: Bridge rectifier & input filter capacitors.
B: Transformer.
C: Heat sinks.
D: Output transformers.
E: Mains input filtering.
F: Cooling fan header.
G: Output filter capacitors (hidden) and DC output cables.

 

The fan is a 12V 0.3A DC Brushless type manufactured by Yate Loon (Model D12SH-12). This large, good quality 120mm, seven-bladed fan, appears capable of moving large amounts of air into the power supply, over the heat sinks, and out through the large hexagonal holed grille. A further look at the board above, shows a well laid out PCB with plenty of room for air circulation, which will assist the cooling process.

 

This picture shows the single 12V rail of which the four separate 12V lines are taken through individual current limiting resistors. These resistors look like no more than flat wire links, but when passing the high currents involved, will drop the necessary voltage for the sensing electronics to shut the power supply down. Provided the 12V lines are load balanced correctly. I see this method as an advantage over single 12V rail power supplies. What current would you rather have flowing under fault conditions? The 20.5A to 55A in the case of this power supply, or with some single rail power supplies, a current in the region of 70A to 100A before current limiting occurs?




  1. Introduction & Closer look
  2. Specifications & Features
  3. Testing
  4. Testing (Continued)
  5. Conclusion
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