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Single Rail vs Two rail

post #1 of 5
Thread Starter 
Basically what is better...

2 12v rails one @17A and one @16A

or a single 12v rail @30A

Like these two
http://www.newegg.com/Product/Produc...82E16817371029

http://www.newegg.com/Product/Produc...82E16817371034

I would think two rails with more amps is better isn't it?
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X79
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post #2 of 5
Between the two units, the NeoECO is better; and offers more amperage on the 12v rail.

1.) You cannot add 12v rails together, as they list OCP Set Points; not a divided current total.
2.) Multiple 12v rails can be better as it offers you 1 more protection (Over Current Protection; OCP) but single 12v rail units can also have Over Current Protection (OCP) on them as well.

I Suggest you read some of the PSU Articles written by Phaedrus; he has one written specifically about this topic, here.
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post #3 of 5
Quote:
Originally Posted by Tator Tot View Post
Between the two units, the NeoECO is better; and offers more amperage on the 12v rail.

1.) You cannot add 12v rails together, as they list OCP Set Points; not a divided current total.
2.) Multiple 12v rails can be better as it offers you 1 more protection (Over Current Protection; OCP) but single 12v rail units can also have Over Current Protection (OCP) on them as well.

I Suggest you read some of the PSU Articles written by Phaedrus; he has one written specifically about this topic, here.
TT hit it on the head with this one.

Although I would personally prefer a PSU with multiple +30A rails than a single 100A rail as you short your PSU on a 100A rail, you may destroy your entire rig.
 
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Gsvlip Dudyrm
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Oda'maksv
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post #4 of 5
Tator Tot and Lord Xeb already said so I won’t repeat it here. Most psus are single rail split into ‘multi’ rails. For most recent psus, it isn’t really a matter of whether single or multi rails. Focus on the adequate power that it can provide. In this case, NeoECO is better as Tator Tot said above.
post #5 of 5
Thread Starter 
Thank you guys
X79
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LGA 775
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X79
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First build ever
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LGA 775
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