View Single Post
  #21 (permalink)  
Old November 3, 2009, 03:49 PM
sswilson's Avatar
sswilson sswilson is online now
Join Date: Dec 2006
Location: Moncton NB
Posts: 17,311

My System Specs


Multi-Rail vrs Single rail:

Basically a single rail unit has only one 12V line which is drawn by all 12V output lines. A multi-rail unit has more than one 12V line which generally would be accessed individually by each output line.

The benefits of single rail vrs multi-rail were originally that a single output line would be able to draw up to the rated max current, while multi-rail units would be limited to the individual line (single rail typically 40A while a multi-rail might be 4 X 12A).

I'm still a diehard single rail fan, but I believe higher-end multi-rail units these days have the ability to automatically switch to single rail operation if one rail tries to draw more than the normal rating.
ASUS ROG Strix Z370-G Gaming (WiFi AC) / i7 8700K / 2X 8G XPG Spectrix D40 (3000) / XFX XTR 750 / ASUS Strix GTX 1070ti
AZZA Titan 240 / Custom WC / Intel 730 Series 480GB SSD / Intel 760p 512GB NVMe / Seagate Barracuda 1TB / ASUS SWIFT PG279Q

Asrock AM1H-ITX / AM1 Athlon 5350 / 1X4G Gskill PC3-14900 / Intel 6235 Wi-Fi / 90W Targus Power Brick / Uncased 256GB Sandisk Z400S SSD / Mini-Box M350 / 24" Westinghouse L2410NM
Reply With Quote