Zalman ZM400B-APS 400W Power Supply

Company: Zalman
Product: ZM400B-APS
Date Reviewed: March 27, 2004
Reviewed By: Jason Rabel
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Introduction:

Zalman is a company mostly known for their cooling solutions, and people instantly associate the name "Zalman" with silence. However, Zalman also manufacturers power supplies, with their new ZM400B-APS following the trend in quieter components. The ZM400B-APS is very similar to the previous model, ZM400A-APF, the main differences being Intel ATX12V ver 1.3 compliance, and two built-in SATA connectors. One thing that is the same in both models and definitely worth mentioning is that these PSUs have Active PFC. Zalman states, "By implementing Active PFC, the power factor (PF) is improved from 75% (Passive PFC) to 94% (at full load), while harmful harmonic frequencies are reduced below regulatory requirements."

The power supply is the heart of a PC, supplying power to the rest of the system. A low quality power supply can cause system instabilities or even damage components. For more information about why the power supply is so important, here is our Power Supply Guide which answers many common questions.