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Gtx780ti + some kind of intel i7 or i5 to run on a 400 watt power supply

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August 5, 2014 4:13:12 PM

Hey guys i was wondering if you could help me out. I am looking at getting a barebones kit and it comes with a 400 watt power supply and i am looking to run a gtx780ti but not sure what Intel Cpu to get without going over the wattage? thanks
August 5, 2014 4:17:20 PM

Totalmutation said:
Hey guys i was wondering if you could help me out. I am looking at getting a barebones kit and it comes with a 400 watt power supply and i am looking to run a gtx780ti but not sure what Intel Cpu to get without going over the wattage? thanks


NO

Need at least a 42 amp on 12v rail power supply. So AT LEAST a 500w power supply. Reccomended 750w
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a b ) Power supply
August 5, 2014 4:17:24 PM

I wouldn't want to run a 400W psu with a gTX 780Ti with any cpu.
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a b ) Power supply
August 5, 2014 4:17:31 PM

A 400W PSU is NOT NEARLY ENOUGH for a 780ti.
An i7 4790 is a good choice.
You will need at least a 550W PSU, though.
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a c 81 ) Power supply
August 5, 2014 4:17:33 PM

You need at least 600W to run the 780Ti. The CPU won't make much difference.
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August 5, 2014 4:18:20 PM

i7Baby said:
You need at least 600W to run the 780Ti. The CPU won't make much difference.


Watts have nothing to do for it. He needs to look for at least 42 amps on the 12v rail.
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August 5, 2014 4:23:24 PM

blue_smoke said:
Totalmutation said:
Hey guys i was wondering if you could help me out. I am looking at getting a barebones kit and it comes with a 400 watt power supply and i am looking to run a gtx780ti but not sure what Intel Cpu to get without going over the wattage? thanks


NO

Need at least a 42 amp on 12v rail power supply. So AT LEAST a 500w power supply. Reccomended 750w


So if I wanted to run say a 780 not the ti what CPU would I have to put in to make ok for a 400 watt
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August 5, 2014 4:25:10 PM

Totalmutation said:
blue_smoke said:
Totalmutation said:
Hey guys i was wondering if you could help me out. I am looking at getting a barebones kit and it comes with a 400 watt power supply and i am looking to run a gtx780ti but not sure what Intel Cpu to get without going over the wattage? thanks


NO

Need at least a 42 amp on 12v rail power supply. So AT LEAST a 500w power supply. Reccomended 750w


So if I wanted to run say a 780 not the ti what CPU would I have to put in to make ok for a 400 watt


Nothing over a R9 270X would work on a 400w psu
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a b ) Power supply
August 5, 2014 4:27:42 PM

blue_smoke said:
i7Baby said:
You need at least 600W to run the 780Ti. The CPU won't make much difference.


Watts have nothing to do for it. He needs to look for at least 42 amps on the 12v rail.


Watts certainly do have something to do with it! You are right, he needs at like 42 amps on the 12v rail, but that means he needs a minimum of 500W. 550 or above will work just fine.
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August 5, 2014 4:30:07 PM

i7Baby said:
Even a gtx750Ti needs 430W

Get a good 600W psu from tiers 1,2a or 2b of http://www.tomshardware.com/answers/id-1804779/power-su... eg Seasonic 620, XFX650 or Antec HCG 620M to run your pc with a 770, 780 or 780ti in it.


technically a 750 ti with a stock i7 and 8gb ram with a 1tb hard drive would only need 300w, but a stable 300w.
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a c 81 ) Power supply
August 5, 2014 8:19:27 PM

400W per RealHard Tech
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August 6, 2014 5:52:54 AM

We'll it's and barebones kit with an sfx 450 watt power supply, sorry missed the 50 watts out. I recently watched a video where Linustechtips said you could put a gtx 780 and i7 4770k and not much else. So how close would it be or would down grading to a i5 4670k give me more room?
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a b ) Power supply
August 6, 2014 5:54:29 AM

NO! We have already told you many times already, 450W is not enough! I doesn't matter what CPU you use, the GPU needs more power than that!
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August 6, 2014 6:39:02 AM

lol why would you downgrade a CPU because you're using an underpowered PSU? Just get a new quality 650Watt PSU...sheesh.
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August 6, 2014 7:52:48 AM

vagrancyx said:
lol why would you downgrade a CPU because you're using an underpowered PSU? Just get a new quality 650Watt PSU...sheesh.


Dude I don't even have any of parts I am looking at getting a barebones kit which comes with the psu attached to the case
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August 6, 2014 7:54:18 AM

Totalmutation said:
vagrancyx said:
lol why would you downgrade a CPU because you're using an underpowered PSU? Just get a new quality 650Watt PSU...sheesh.


Dude I don't even have any of parts I am looking at getting a barebones kit which comes with the psu attached to the case


okay my statement remains..either don't get the barebones kit with the too low PSU, or buy the barebones kit and replace it.
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a b ) Power supply
August 6, 2014 8:29:09 AM

A barebones kit isn't a good match for a 780ti, anyway. It'll get too hot.
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August 6, 2014 11:03:55 AM

Totalmutation said:
vagrancyx said:
lol why would you downgrade a CPU because you're using an underpowered PSU? Just get a new quality 650Watt PSU...sheesh.


Dude I don't even have any of parts I am looking at getting a barebones kit which comes with the psu attached to the case


Lemme guess. The ASROCK M8?
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a c 81 ) Power supply
August 6, 2014 3:27:27 PM

Included psu's are crap quality.
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a b ) Power supply
August 6, 2014 3:29:20 PM

^ Yep. Do not get a barebones kit for a high end build. Please. :) 
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August 7, 2014 12:29:24 PM

i7Baby said:
Included psu's are crap quality.


not necessarily. max tdp for a graphics card in the asrock m8 is 200w, if you ask me, thats around a R9 280 or R9 270X
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