B.Ob. Posted February 12, 2008 Share Posted February 12, 2008 Interview with PC Power & Cooling Founder "That sounds reasonable. This is also for example how the single 12V rail got into place. Why exactly is one 12V rail better than separate rails, and why is this not a safety issue for the user? DD: One 12V rail is better because all of the power supply's capacity is available to the system. With a multi-rail 12V design, as much as 30% of the PSU's capacity can be trapped on under-utilized rails. For example, if one 12V rail rated at 18A is for the CPU, and the CPU only draws 8A, the remaining 10A cannot be utilized by other components in the system. That's true. I had an AnandTech reader writing me about a problem with his setup powering up 18 hard disks at the same time. I suggested he either gets two power supplies, using the second just for the HDDs, or that he use a power supply with a massive single 12V rail. Eventually he ended up with one of your Silencer 750W power supplies and that completely solved the problem. DD: That is one of the problems you can solve with a single rail, yes." Quote Link to comment Share on other sites More sharing options...
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