Will my PSU power GTX 780

snix

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May 10, 2013
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Here is a link to my PSU:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817163109

Here is my system:
FX-8350 | Evo 212 | Gigabyte 990FXA-UD3 Mobo | Gtx 760 | Samsung 840 120Gb | seagate barracuda | Bar G.Skill Sniper 2x8Gb 1866 Mhz | Silverstone 600w Modular | Old Falcon Northwest Case | 20 30 20 PLP Dell Monitors

- I have my 8350 OC to 4.3 with no increase to Vcore.
- I have 5 fans total (3 running through mobo, 2 straight to psu)
- I want to OC the gtx 780

Here is the link to GPU I want:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814125488

If my PSU works, how do I go about connecting the two 8-pin power connectors the gtx 780 requires.


 

Ratul Chakrabarty

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Sep 7, 2013
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change the psu i dont think it will be enuf it has an efficiency of 75.8% get a seasonic eco 600 will do the job.
 

sheag123

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Dec 1, 2012
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having an efficiency of 75% compared to.. say 80 wouldnt rule out that this psu will work with a 780. it means he will pay more for electricity.

if you (snix) already have it then you are going to be fine.

if you have the choice to opt for another power supply then i would suggest that. a seasonic or a good corsair would be good choices.
 

snix

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May 10, 2013
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I currently have it running my system with the GTX 760 with no issues. From my understanding the gtx 780 will require approx 50w more. Do you think I will have any issues with an OC? What adapters will I need for the two 8-pin power connectors; my current gtx 760 has two 6 pins.
 
Sep 15, 2012
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yes it should works, but considering:

-The GeForce GTX 780 - requires 42A and a 600W PSU minimum, and has an elevated max TDP of 250W.
-The FX-8350 max TDP 125W some more with OC.
-Taking into account your PSU is little old(tend to lose power with time), also you are thinking on OC activities, so your power needs will be higher too, then you would be really tight on global power consumption, reducing more your PSU lifespan considerably, also you wont be able to upgrade any part on the future.
-I recommend a new good branded certified 600W~700W PSU, something more like Seasonic, XFX, Corsair, Antec, for a new GTX780 and possible future upgrades.



 

md1032

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Dec 31, 2007
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I would seriously consider upgrading your PSU. You run the risk of having a choppy game experience with a PSU that is struggling to keep up with demand.

These guys take power supply testing very seriously. Anything "Passing" their tests is a good place to start.

http://www.hardocp.com/reviews/psu_power_supplies/

I would get a solid 650 W unit for the GTX 780.

Investing in a quality 850-ish Watt unit right now would also allow you future expandability (eg SLI) and last you through multiple computers in the future. It's worth considering IMO.
 

sheag123

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Dec 1, 2012
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yes there are better power supplies out there and yes he would probably benefit from having more watts and amps. original question is will it work. there are a lot of evga hadron builds with a 780 and 780 ti's out there using 500 and 550w psu's with pretty high overclocks on liquid. just as an example. so chances are that it will work.

most times the actual watts pulled from the wall are a fraction of what the rated watts actually are rated at, this is why its definitely worth a look.

its not worth going out and spending $100-$150 on a new psu without trying it.

http://www.tomshardware.com/answers/id-1872610/evga-hadron-air-gtx-780ti.html
 

Tradesman1

Titan
Moderator

___________________________________

Yes what you have should work fine, won't know till you try, but it's a quality PSU with planty of power for your GPU and rig
 

snix

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May 10, 2013
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Thank you all for the help; a lot of great insight/info. Gonna give it a run as I don't plan on upgrading anymore components for a while.
 

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