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PSU recommendation for SLI GTX 560 Ti

Last response: in Graphics & Displays
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July 27, 2011 4:46:49 AM

Hi every1,


Im building this new PC:

GA-Z68-MA-D2H-B3
2x GTX 560 Ti
2x HD502HJ (Samsung spinpoint f3 500gb 7200rpm)
BX2250 (21.5 pol full hd led)
Corsair Vengeance 8gb cl9 1.5v
Only one dvd drive
Hyper 212 plus and more 4 120mm fans (case)
i5 2500k (im planning a 4ghz overclock)

So my doubts are:

How many amperes the 2x GTX 560 Ti will consume?
Corsair CMPSU-650TXV2 ( 650w psu) will handle the system?
a c 540 U Graphics card
July 27, 2011 5:09:14 AM

For a system with two reference clocked GeForce GTX 560 Ti graphics cards in 2-way SLI mode NVIDIA recommends a minimum 700 Watt or greater power supply with a minimum +12 Volt continuous current rating of 47 Amps or greater and with at least four 6-pin PCI-E Supplementary Power Connectors.

The Corsair Enthusiast Series TX650 V2 (CMPSU-650TXV2) power supply unit with its +12 Volt continuous current rating of 53 Amps is more than sufficient to power your system with two reference clocked GeForce GTX 560 Ti graphics cards in 2-way SLI mode.

If you run Furmark Stability Test each reference clocked card may draw up to 202 Watts (or 16.8 Amps) from the +12 Volt rail so double that for 2-way SLI. This is considered a very high non-game power consumption that can typically be reached only with stress testing applications like Furmark and OCCT.

In typical gaming each reference clocked card may draw up to 147 Watts (or 12.25 Amps) from the +12 Volt rail so double that for 2-way SLI.

Factory overclocked cards will consume more power than the reference clocked cards as expected so that also needs to be considered.
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July 27, 2011 3:31:53 PM

From the article above:

"System Wattage with GPU in FULL Stress = 449W"

Then I need 37.4 amps in the 12v right?

ko888, Im looking for GTX 560 Ti Msi Twin Frozr II and I will overclock them (in addition 4ghz cpu overclock) !

About gpu overclock Im planning a 5% overclock only....


Thanks for the info !
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a c 540 U Graphics card
July 27, 2011 5:01:26 PM

Card power consumption - Idle (Windows sitting at the desktop)
NVIDIA reference design : 14 Watts (1.2 Amps)
MSI GeForce GTX 560 Ti Twin Frozr II 1024M : 14 Watts (1.2 Amps)

Card power consumption - Average (Represents average power usage during gaming)
NVIDIA reference design : 128 Watts (10.7 Amps)
MSI GeForce GTX 560 Ti Twin Frozr II 1024M : 136 Watts (11.3 Amps)

Card power consumption - Peak (Represents peak power usage during gaming)
NVIDIA reference design : 147 Watts (12.25 Amps)
MSI GeForce GTX 560 Ti Twin Frozr II 1024M : 157 Watts (13.1 Amps)

Card power consumption - Maximum (Furmark Stability Test)
NVIDIA reference design : 202 Watts (16.8 Amps)
MSI GeForce GTX 560 Ti Twin Frozr II 1024M : 222 Watts (18.5 Amps)

For the MSI GeForce GTX 560 Ti Twin Frozr II 1GB to handle peak power usage during gaming 39 Amps on the +12 Volt rail would be considered the safe minimum.

If you're the type that runs Furmark Stability Test or OCCT GPU stress testing then 50 Amps on the +12 Volt rail would be considered the safe minimum.

The Corsair Enthusiast Series TX650 V2 (CMPSU-650TXV2) power supply unit with its +12 Volt continuous current rating of 53 Amps should be able to handle all of this even with the planned 5% GPU overclock.
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July 27, 2011 7:42:08 PM

Best answer selected by alex_77.
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July 27, 2011 7:42:25 PM

Thx !
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a c 271 U Graphics card
July 27, 2011 8:34:24 PM

This topic has been closed by Mousemonkey
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