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Can my PSU run two Zotac GTX 780 Ti AMP Editions?

Tags:
  • Power Supplies
  • Zotac
  • Nvidia
  • CPUs
  • Corsair
  • Graphics
  • Intel
Last response: in Graphics & Displays
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March 1, 2014 5:56:23 PM

Hello, I have a Corsair 1050W HX Series Modular PSU. My CPU is an Intel Sandybridge i5-2500K. I also have 8GB of Corsair Vengeance LP Arctic White RAM. Would my PSU be adequate enough to handle two of these cards in SLI, and if so could I overclock the cards and CPU further without issue?

More about : psu run zotac gtx 780 amp editions

a b ) Power supply
a b Î Nvidia
a b à CPUs
March 1, 2014 6:01:24 PM

yes it should handle it easily.
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a c 272 ) Power supply
a c 95 Î Nvidia
a c 238 à CPUs
a c 103 å Intel
March 1, 2014 6:02:20 PM

Plenty of power even with as much overclocking as you want to do.

Only 950 watts is recommended for 2 x GTX 780 Ti cards in Sli. And that is an overestimation.

http://www.realhardtechx.com/index_archivos/Page362.htm
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a b ) Power supply
a b Î Nvidia
a b à CPUs
March 1, 2014 6:02:45 PM

you have 87.5amps on the 12v rail. the 780ti's will top out at about 42amps each with a very high overclock. you would be fine with that power supply.
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a c 272 ) Power supply
a c 95 Î Nvidia
a c 238 à CPUs
a c 103 å Intel
March 1, 2014 6:06:43 PM

nikoli707 said:
you have 87.5amps on the 12v rail. the 780ti's will top out at about 42amps each with a very high overclock. you would be fine with that power supply.


No. A system with a GTX 780 Ti needs 42 amps. A single GTX 780 Ti will not use 500 watts all by itself. Amps x volts = watts. So 42 amps x 12 volts = 504. Since a PCI-E 3.0 slot and each 8 pin connector can theoretically supply 150w each you can see where that would not be possible.
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a b ) Power supply
a b Î Nvidia
a b à CPUs
March 1, 2014 6:11:17 PM

the 780ti kingpin modded to 1.5v on the core and running about a 1.65ghz overclock pulls roughly 450watts. it theoretically has a maximum of about 512w according to specs. this is an obvious very high overclocking worst case situation.
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a c 272 ) Power supply
a c 95 Î Nvidia
a c 238 à CPUs
a c 103 å Intel
March 1, 2014 6:13:47 PM

With a specially designed card made for world records. Obviously not applicable to the OP.
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a b ) Power supply
a b Î Nvidia
a b à CPUs
March 1, 2014 6:15:55 PM

true. point being he will likely never top 350w on each card. his power supply is very premium and more than enough.
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March 1, 2014 6:19:04 PM

Thanks a lot guys, now I can go ahead and purchase with confidence!
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a c 272 ) Power supply
a c 95 Î Nvidia
a c 238 à CPUs
a c 103 å Intel
March 1, 2014 6:22:39 PM

Glad to help! :) 
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