PSU Single Rail Or Multi Rail ?

[Dicehunter]

I got the Corsair RMi 1000w 80+ Gold a few days ago and it's a great PSU but there's 1 thing I was curious about.

It has the ability through the software interface to switch from a multi rail system to a single rail, Would this actually make any difference to the performance of the system ?

 

[Dicehunter]

Multi rail doesn't really have any advantages apart from getting over the problem of making one rail carry a load of power.

Single rail is better because say for example you had a couple of 800w PSUs, one single rail and one dual rail. If you pulled 700w from the PSUs, the single rail PSU would have 100w left on the rail, but the dual rail PSU could have one rail with 150w left, and one rail overloaded by 50w.

Having said all that, it doesn't matter as long as long as enough power is available.

I don't see how you can switch between single rail and multi rail. Sounds gimmicky to me.

Well it has multiple 12v rails so you either have both on or switch to a single rail.

 

[Dicehunter]

so it has say, two 500w rails and you can either run it as a 500w single rail PSU or a dual rail 1000w PSU?

That's what I got from the review yes although I'm still a little confused on the matter