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Switching Power Supplies A to Z
Switching Power Supplies A to Z, by Sanjaya Maniktala (Newnes), starting at $94.17
Home » Power
OCZ StealthXStream 2 600 W Power Supply Review
Author: Gabriel Torres
Type: Reviews Last Updated: July 28, 2010
Page: 6 of 10
Real-time pricing for XFX P1-750B-NLG9.
XFX P1750BNLG9 Pro Series XXX Edition ATX Semi-Modular Power Supply 750W 80 Plus Silver 135mm Fan Active PFC
TigerDirect: $129.99 Newegg: $129.99
CompUSA: $129.99

Power Distribution
Hardware Secrets Golden Award

In Figure 16, you can see the power supply label containing all the power specs.



StealthXStream 2 600 W power supply
click to enlarge
Figure 16: Power supply label

This power supply has four +12 V rails, and we confirmed this by analyzing its circuit. The manufacturer did a great job of describing the components that are connected to each rail on the power supply label, but there is one error: the label talks about a “PCI-E2” connector, that doesn’t exist (both video card connectors of this power supply are attached to the same cable). The four available rails are divided like this:

  • +12V1 (yellow wire with blue stripe): ATX12V connector labeled as “CPU1”
  • +12V2 (yellow wire with white stripe): ATX12V connector labeled as “CPU2”
  • +12V3 (solid yellow wire): Main motherboard cable and all peripheral connectors
  • +12V4 (yellow wire with black stripe): Video card auxiliary power connectors

Now let’s see if this power supply can really deliver 600 W.

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