single +12v rail vs multiple rails

4745454b

Titan
Moderator
I think it makes a lot less difference then people realise. Unless the multiple rails are "made" seperately, multiple rail PSU start as a single large rail and split into smaller rails. "True" multi rail PSU exist, but are very expensive. In the end, it doesn't really matter.
 

tamalero

Distinguished
Oct 25, 2006
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Single rail is better and are generaly high quality unit. That said they are also more exspencive. The great majority of PSU availible have multiple current limited +12v rails. They are also cheaper and besause of that are the more widly used PSUs. Right now the top PSUs availible are single rail units from PC Power & Cooling.

http://www.newegg.com/Product/ProductList.asp?N=2010320058&Submit=ENE&Subcategory=58&Description=PC+Power+%26+Cooling&Ntk=all

holy sweet jeebus, that quad of 750 watts ( 885 peak )
is 60amperes in the 12V rail o_O