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PSU 12V rail issue on GTX 560 Ti

Last response: in Components
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May 17, 2012 3:06:38 PM

Hello everyone,

I would like to know if a +12V @ 18 A would suffice a GTX 560 Ti. Does having 2 6-pin connectors with each having 18A equal to 36A?
18A + 18A =36A since 2 6-pin connectors

NVIDIA says the card's minimum is 31A on the 12V rail.

a c 139 ) Power supply
a b Î Nvidia
May 17, 2012 3:09:53 PM

ivy_13 said:
18A + 18A =36A since 2 6-pin connectors
It doesn't work that way.

What make and model of PSU do you have?
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May 17, 2012 3:12:57 PM

FSP Supersonic 650W
What PSU can you recommend?
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May 17, 2012 3:13:15 PM

I am afraid that the 31A is Required on a Single 12v Rail......Sorry dude i guess u'll need a better one...Dont risk you Great card on a cheap PSU
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a c 243 ) Power supply
a b Î Nvidia
May 17, 2012 3:21:35 PM

2534349,4,1192334 said:
I am afraid that the 31A is Required on a Single 12v Railquotemsg]
:pfff: 
No, it's not required on a single rail
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a c 139 ) Power supply
a b Î Nvidia
May 17, 2012 3:23:30 PM

31A will not be required on a single rail.


I'm having trouble finding specs on that FSP Supersonic 650W.

What you want to do is look on the PSU's data plate and find the combined +12V wattage. Divide that by 12 and you have the +12V Amps for that unit.

In this example two rails of 19A but Combined Wattage for both rails is 430W.
And 430W / 12V = 35Amps

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