400 watts enough for gtx 780

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GhostPyro

GhostPyro

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im sold my gtx 780 to a friend who has a 400 watt power supply and has a i3 4130. i dropped the price $160 for the card when he wouldnt buy it for 180, i dont think he'll buy a new psu. is 400 watts enough?
 
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Depending on the model, and my memory, the 780 is anywhere from a 200 to 250W card. Altogether I put his system anywhere from 300-350W under load. This 75%+ of the total capacity of his 400W PSU. This is simply too much for a PSU to handle long term. As mentioned above I doubt his 400W PSU has the plugs needed for that GPU. I also suggest buying a new PSU. Any quality 500-550W PSU should be fine.
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JackNaylorPE

JackNaylorPE

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http://www.tomshardware.com/answers/id-2311121/power-supply-requirements-nvidia-gpus.html#14243229

http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-780/specifications
780 Thermal and Power Specs:
95 C = Maximum GPU Tempurature (in C)
250 W = Graphics Card Power (W)
600 W = Minimum System Power Requirement (W)
One 8-pin and one 6-pin = Supplementary Power Connector
Click to expand...


http://www.guru3d.com/articles_pages/geforce_gtx_780_review,9.html

Subjective obtained GPU power consumption (780) = ~ 231 Watts

Here is Guru3D's power supply recommendation:

GeForce GTX 780 - On your average system the card requires you to have a 550 Watt power supply unit.
GeForce GTX 780 2-way SLI - On your average system the cards require you to have a 800 Watt power supply unit as minimum.
GeForce GTX 780 3-way SLI - On your average system the cards require you to have a 1200 Watt power supply unit as minimum.

If you are going to overclock your GPU or processor, then we do recommend you purchase something with some more stamina.
Click to expand...
 
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boosted1g

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A good QUALITY 400w psu would not be able to handle the card.
A crap 400w PSU will probably fry the card.
Doubtfull either will have the PCI-E power connectors needed.

780 will be bottlenecked a little bit by his i3 but not too bad, still better then anything new he could get for $160
 
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4745454b

4745454b

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Depending on the model, and my memory, the 780 is anywhere from a 200 to 250W card. Altogether I put his system anywhere from 300-350W under load. This 75%+ of the total capacity of his 400W PSU. This is simply too much for a PSU to handle long term. As mentioned above I doubt his 400W PSU has the plugs needed for that GPU. I also suggest buying a new PSU. Any quality 500-550W PSU should be fine.
 
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