PSU question, dual rails...

[Torquar]

Hi all,

I have a Tagan U15 530w psu, it has a selector switch to go from dual rail to combined rails. It supplies 20a on each 12v rail, or 33a when combined.

Now the way of the psu is a bit of a mystery to me, so I'd like to draw upon the boundless experience represented by this forum and ask the question: should I use combined or dual rails?

My specs are as follows:

AMD 64 x2 4400
2gb Corsair ram
dvd r/w
floppy
Creative x-fi
2 x sata hdd, 1x150gb, 1x250gb
connect3d x1900xtx
Asus A8N32x Sli-deluxe mobo.

All advice appreciated.

 

[pastymuncher]

I think the dual rails option would be best for stability. To be honest i have never come across a psu that could do this before.

 

[semi-pro waster]

It won't make much of a difference, on Tagans if you select dual and it draws too high a voltage then it should automatically switch to combined anyway, this combined selection was sometimes necessary for dual graphics card systems. I'd just leave it on whatever the setting was from the factory but then I'm lazy like that.

 

[SidewinderINC]

i'm sure if you run on split rails each "half" of the system is not going to draw 20a - if it does then thats one hell of a system and from your stated spec it will be fine