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SeaSonic 650w Enough for 560Ti SLI?

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April 8, 2011 10:34:57 PM

Hey guys,

I have a SeaSonic X Series X650 Gold: link

I would like to SLI two GTX 560 Ti. Would I have enough power? According to this article it requires +700 worth of power: article

Is that true?

I would be running i5 2500k.

Thanks for the help!
April 8, 2011 11:01:33 PM

It would appear that 650w would be fine considering the power draw of double 4870s (4870 has a similar power profile to the 560) is about 400w. The i5 draws less power than most of the quad core i7 test machines as well.

http://www.tomshardware.com/reviews/nvidia-geforce-gtx-...

there's a reference link, but even assuming TOTAL system power, including ALL components doubled because of your SLI setup, which it most surely will not, you'd still be fine and at about 520w of power draw.
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April 8, 2011 11:26:18 PM

Here is a quote from Hilbert Hagedoorn @ The Guru of 3D:

Quote:
Here is Guru3D's power supply recommendation:

GeForce GTX 560 Ti

On your average system the card requires you to have a 500 Watt power supply unit.

GeForce GTX 560 Ti in 2-way SLI

A second card requires you to add another ~175 Watts. You need a 700+ Watt power supply unit if you use it in a high-end system (800+ to a KiloWatt is recommended if you plan on any overclocking).


Which seems to conflict with the Tom's reference link you posted. Why the difference? Am I missing something?
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a b ) Power supply
April 9, 2011 5:01:23 AM

That 650W power supply can actually handle approximately 800W power draw. It will be fine with your SLI setup.

I have the SeaSonic X-Series 560W with one GTX 570 over-volted and overclocked, plus a 2500K over-volted and overclocked, 12GB of 1600 RAM, and a water cooling loop for the CPU. When gaming, my peak power draw is less than 375W. I could add another GTX 570 and still be fine.
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a c 1198 ) Power supply
April 9, 2011 6:27:33 AM

NVIDIA's recommendation is 650 Watts for two GeForce GTX 560 Ti in 2-way SLI.

The power supply must have a minimum combined +12 Volt current rating of 45 Amps.

The Seasonic X-Series 650 Watt PSU meets the requirements.
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a c 274 ) Power supply
April 9, 2011 10:51:28 AM

champ413 said:
Hey guys,

I have a SeaSonic X Series X650 Gold: link

I would like to SLI two GTX 560 Ti. Would I have enough power? According to this article it requires +700 worth of power: article

Is that true?

I would be running i5 2500k.

Thanks for the help!

You should be ok the point you're missing is Guru3D's test bed is a moderately overclocked i7-965 cpu.
It requires more power then a SB cpu.
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April 9, 2011 1:54:59 PM

Best answer selected by champ413.
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April 9, 2011 1:55:10 PM

Thanks for all the help!
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