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Monday, April 30, 2007
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The evolution of the ATX power supply seems to be a constant process as computer hardware becomes more powerful and power hungry. First we had simple units with three basic +3.3V, +5V, and +12V rails, then came extra features like Power Factor Correction (PFC) to help deliver cleaner, more efficient power, then came the introduction of SATA hard drives and the PCI-Express interface spurring on the introduction of a new ATX 12v 2.0 standard. Among other things, this new power supply standard includes four extra pins on the main 20-pin ATX motherboard connector (for a total of 24-pins) and multiple 12V rails for increased power delivery to new modern power hungry processors and video cards. Companies then started to develop a modular cabling system that allowed the user to customize what cables and connections they want and what they don't. This helped reduce wire clutter inside the case and set particular products out from the crowd of the usual power supply suspects.
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