PSU Rails

2 replies [Last post]
Black Bird
Joined: 03/17/2010
Posts: 4

I have a question and i hope that you will answer.

What are the rails on PSU's and what are they for?

I always hear in your review something about 12V Rails & etc. but i have no idea what you are talking about. Please help me understand those terms.

Thanks in advance

Black Bird

Tivon's picture
Joined: 04/26/2002
Posts: 1939

A Rail is a general term that is used when describing the power lines in a computer power supply. Many modern PSU's will have multiply 12V Rails. The 12V, 3.3V and 5V lines are combined to give the total ratings.

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3dGameMan's picture
Joined: 12/31/2000
Posts: 5401

Rodney Reynolds,