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Will My PSU Work With This SLI Setup

Last response: in Components
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May 19, 2011 5:35:34 AM

Hey There,

I found a great deal on 2 Nvidia GTX 560's I'd like to add to my system. They are the Gigabyte Ti Super Overclock Series cards and I'd like to know if I have a PSU that will handle them without running into trouble.

This is my current setup;

Cooler Master 690 II Advanced case with x2 140mm fans & x2 120mm fans
EVGA P55 mainboard
I7-870 (stock speeds)
Cooler Master Hyper 212+ with 2 120mm fans
6GB OCZ 1333
OCZ Fatal1ty 700 Watt SLI certified PSU
2 BFG Tech GTX 260's (Maxcore editions)

As you can see I have 2 GTX 260's and have never had anything newer then them, but the PSU I have I'm not sure if it will handle 2 560's in SLI.

Thanks for your help guys

More about : psu work sli setup

a b ) Power supply
May 19, 2011 5:50:05 AM

260s in sli is gonna be fine with that psu.

Or are you saying 560's in SLI?
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May 19, 2011 5:51:35 AM

ghnader hsmithot said:
260s in sli is gonna be fine with that psu.

Or are you saying 560's in SLI?


He has the 260s and wants to know of he has enough juice to power the 560s
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a b ) Power supply
May 19, 2011 5:53:49 AM

ooo..
Sorry.
And what version TI or non ti versions?
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a b ) Power supply
May 19, 2011 6:01:56 AM

no the ocz fatal1ty 700w doesnt have two pci e connectors.So no SLI for you buddy.
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May 19, 2011 6:02:25 AM

They are the Gigabyte GTX 560 TI super overclock series: GV-N560SO-1GI-950
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a b ) Power supply
May 19, 2011 6:03:41 AM

no the fatal1ty doesnt have 4 pci e connectors.
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a b ) Power supply
May 19, 2011 6:04:54 AM

and yes a GOOD 700W can handle the 560 TI in SLI.
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a c 1168 ) Power supply
May 19, 2011 6:22:48 AM

A single reference clocked GeForce GTX 560 Ti has a Graphics Card Power of 170 Watts. This means that the card will draw up to 14.2 Amps from the +12 Volt rails.

For a single card system a minimum of a 500 Watt or greater system power supply with a minimum +12 Volt current rating of 30 Amps or greater is recommended.

For two reference clocked GeForce GTX 560 Ti's in 2-way SLI mode a 650 Watt or greater system power supply with a minimum +12 Volt current rating of 45 Amps or greater is recommended.

Your OCZ Fatal1ty OCZ700FTY power supply unit with its ability to provide up to its labeled 56 Amps on its single +12 Volt rail should have no problem powering GeForce GTX 560 Ti's in 2-way SLI mode.

In Hardware Secrets' OCZ Fatal1ty 700 W Power Supply Review, they were able to draw up to 62 Amps from the +12 Volt rail in their overload test while still keeping noise and ripple within spec.
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a c 243 ) Power supply
May 19, 2011 1:42:33 PM

soest009 said:
GeForce GTX 560 Ti average system power 263.3W x 2 = 526.6
http://www.tomshardware.com/reviews/nvidia-geforce-gtx-...

SYSTEM power, you even typed it in.

Intel Core I7-870 stock under full load 178W
http://www.tomshardware.com/reviews/p55-motherboard-ove... said:
Intel Core I7-870 stock under full load 178W
http://www.tomshardware.com/reviews/p55-motherboard-ove...

SYSTEM power, you must have missed it;
" we really did reach full TDP for the stock processor by using eight Prime95 threads, the full system power (178W) minus power supply inefficiency (17.8W) and processor power leaves 65W remaining for “everything but the processor.” "

526.6 + 178 = 704.6

Gonna be tight said:
526.6 + 178 = 704.6

Gonna be tight

Gonna be tight ?

You've just shown that it would take 3 systems to put a 700 watt power supply over the edge of it's rating.
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May 19, 2011 1:46:52 PM

delluser1 said:
SYSTEM power, you even typed it in.


SYSTEM power, you must have missed it;
" we really did reach full TDP for the stock processor by using eight Prime95 threads, the full system power (178W) minus power supply inefficiency (17.8W) and processor power leaves 65W remaining for “everything but the processor.” "


Gonna be tight ?

You've just shown that it would take 3 systems to put a 700 watt power supply over the edge of it's rating.



Doh! i need coffee :S
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a b ) Power supply
May 19, 2011 1:53:22 PM

soest009 said:
Doh! i need coffee :S

We are all learning something new everyday.

DellUser1 is one of the most experienced members on the team so yeah.
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May 20, 2011 1:55:26 AM

So, will the 2 GTX 560 TI super overclock editions work with my Fatality 700 watt psu?

Since I found the deal on the 2 560's that would be all I'm interested in, since I can buy them for $400 and if I can use them I'll buy them, but if not I'd rather not buy a new PSU at this time, since I only have a limited amount of money right now.
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a c 1168 ) Power supply
May 20, 2011 6:02:58 AM

fl-gators-fan said:
So, will the 2 GTX 560 TI super overclock editions work with my Fatality 700 watt psu?

Yes.

Each graphics card should include two Molex to 6-pin PCI Express Supplementary power adapter cables.
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Best solution

May 20, 2011 6:03:24 AM

Normal wise your cpu has the juice to power them.
On the other side as Ghnader mentioned, your cpu does not have 4x6pin pci-e connectors.
Each card needs 2 of them, and your psu only provides 2.
But like ko888 said in the box should be two molex to 6-pin converters to cover that.

End of the line: YES you are good to go.

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May 20, 2011 6:53:48 AM

Hey Thanks guys :-) I was alittle confused with the different replys and didn't know what to think, but I appreciate everyone's help with my question
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May 20, 2011 6:55:09 AM

Best answer selected by fl-gators-fan.
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