is single-rail a problem in <600W PSUs

[17030644]

Can it cause damage to your PC if your system draws <600W

[schwellmo92]

Completely depends on your PSU

[spwath]

Single rail is usually better.

[alexhelvetica]

Depends on the PSU.

I would go multi rails if possible. You should never encounter a problem where you cannot draw enough power from one set of rails - you are likely doing something wrong if that's the case.

[17030644]

16 minutes ago, spwath said:

Single rail is usually better.

explain why

[spwath]

2 minutes ago, 17030644 said:

explain why

You don't have to worry about drawing too much from one rail.

For example, i have an r9 295x2 coming. That draws 500w on its own, or about 42a. 

I would have to make sure each 8 pin was on a separate rail in a multi rail PSU. with single rail, I don't have to worry about it.

[Stefan Payne]

8 hours ago, spwath said:

Single rail is usually better.

Bridging your breakers in the Box is usually better because you don't have to worry about Current Draw...

8 hours ago, spwath said:

You don't have to worry about drawing too much from one rail.

If you do have to do that, the Manufacturer of the device made something wrong...

 

8 hours ago, spwath said:

For example, i have an r9 295x2 coming. That draws 500w on its own, or about 42a. 

I would have to make sure each 8 pin was on a separate rail in a multi rail PSU. with single rail, I don't have to worry about it.

The Manufacturer takes care of that usually...

And even if, that Isn't really an issue now is it?!

 

But with true Single Rail and real high Kilowatts, you have this when something goes wrong:

https://www.overclock.net/forum/31-power-supplies/944707-why-single-rail-not-better-than-multi-rail.html

 

Yeah, who wouldn't want a fire when a MOSFET shorts??

[Stefan Payne]

9 hours ago, 17030644 said:

Can it cause damage to your PC if your system draws <600W

9 hours ago, schwellmo92 said:

Completely depends on your PSU

9 hours ago, Comic_Sans_MS said:

Depends on the PSU.

And that is what there is to say...

Depends on the circumstance, what we are talking about, what the isue is, how high the OCP is set, how thick the Cable is, how high the Amperage of the quasi short 

 

9 hours ago, Comic_Sans_MS said:

I would go multi rails if possible. You should never encounter a problem where you cannot draw enough power from one set of rails - you are likely doing something wrong if that's the case.

Yeah, absolutely because if the Manufacturer isn't lying with the PSU, you usually have OCP on all rails. And more protection is never a Problem, is it?

 

Single Rail is just easier for the manufacturer and also cheaper, because nobody has to think about the rail distribution, the OCP Set Points and you can use cheaper protection ICs...