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Power Distribution

In Figure 15, you can see the power supply label containing all the power specs.

Antec VP450 power supplyFigure 15: Power supply label

As you can see, this power supply is sold as having two +12 V rails, which is correct, since this unit has two +12 V over current protection circuits (see previous page), and we could clearly see two “shunts” (current sensors). See Figure 16. Click here to understand more about this subject.

Antec VP450 power supplyFigure 16: Shunts

The two +12 V rails are distributed as follows:

  • +12V1: All cables but the EPS12V/ATX12V
  • +12V2: The EPS12V/ATX12V cable

This is the typical distribution used by power supplies with two +12 V virtual rails.

How much power can this unit really deliver? Let’s find out.

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Gabriel Torres is a Brazilian best-selling ICT expert, with 24 books published. He started his online career in 1996, when he launched Clube do Hardware, which is one of the oldest and largest websites about technology in Brazil. He created Hardware Secrets in 1999 to expand his knowledge outside his home country.