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Which PSU for gtx 780 and i7 4770k OC?

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March 4, 2014 12:36:53 AM

Hey guys,

Im building a new pc and I need to pick a power supply. I will use a gtx 780 Superclocked acx by evga. I will also get an i7 4770k. I will overclock it. Minimum psu is 600w for gtx 780 and if i add the i7, it becomes 684 watts (without oc). If i oc it, let's say maybe 5-10 more watts.

Here a few things to consider:

I would prefer it to be fully modular, it's my first ever build and i preference things to be a little easy, I will buy an nzxt phantom 410 with an MSI z87-g45 gaming motherboard.
Needs to be from a reliable brand(xfx, seasonic ect.)
Must support my components(total of build should hopefully be under $1700): http://pcpartpicker.com/p/33RGw
It says 457wattage is being used in pc part picker, but its incorrect obviously, can you guys plz help me on that one? I dont know how many watts an overclocked i7 4770k CPU and evga sc acx gtx 780 gpu.

Any suggestions guys?

Thnx.

More about : psu gtx 780 4770k

March 4, 2014 12:40:26 AM

650w or 700w
if planning to sli 850w is enough
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March 4, 2014 12:50:14 AM

nashdes001 said:
650w or 700w
if planning to sli 850w is enough


Yes, but which company/rating? And which is best for SLI and whit is best for non-SLI?
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March 4, 2014 1:03:47 AM

thing doesnt really work that way. the recommendation for 780 installed in a system is 42A on the 12v rail and a 600w psu. both cpu and gpu draws power fron the 12v rail and on the 42A the entire system is calculated in. your cpu's TDP is 84w and will increase when o/ced. actually the 42*12=504W. so that can be achieved from a quality 550W psu. the recommendations refer to generic psu.but most would want a bit of a headroom to be on the safe side so in your case a good 650w psu will be more than enough. consider these as great options
http://pcpartpicker.com/part/xfx-power-supply-p1650snlb...
http://pcpartpicker.com/part/rosewill-power-supply-caps...
http://pcpartpicker.com/part/seasonic-power-supply-ss65...
http://pcpartpicker.com/part/seasonic-power-supply-ss65...
for the xfx and rosewill there are also modular versions with more money though.
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March 4, 2014 1:10:16 AM

chris987 said:
thing doesnt really work that way. the recommendation for 780 installed in a system is 42A on the 12v rail and a 600w psu. both cpu and gpu draws power fron the 12v rail and on the 42A the entire system is calculated in. your cpu's TDP is 84w and will increase when o/ced. actually the 42*12=504W. so that can be achieved from a quality 550W psu. the recommendations refer to generic psu.but most would want a bit of a headroom to be on the safe side so in your case a good 650w psu will be more than enough. consider these as great options
http://pcpartpicker.com/part/xfx-power-supply-p1650snlb...
http://pcpartpicker.com/part/rosewill-power-supply-caps...
http://pcpartpicker.com/part/seasonic-power-supply-ss65...
http://pcpartpicker.com/part/seasonic-power-supply-ss65...
for the xfx and rosewill there are also modular versions with more money though.


+1 for checking the actually ratings on the 12v rail to many people dont do this and they just pop in and say 550 750 it aggrevating

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March 4, 2014 1:19:48 AM

chris987 said:
thing doesnt really work that way. the recommendation for 780 installed in a system is 42A on the 12v rail and a 600w psu. both cpu and gpu draws power fron the 12v rail and on the 42A the entire system is calculated in. your cpu's TDP is 84w and will increase when o/ced. actually the 42*12=504W. so that can be achieved from a quality 550W psu. the recommendations refer to generic psu.but most would want a bit of a headroom to be on the safe side so in your case a good 650w psu will be more than enough. consider these as great options
http://pcpartpicker.com/part/xfx-power-supply-p1650snlb...
http://pcpartpicker.com/part/rosewill-power-supply-caps...
http://pcpartpicker.com/part/seasonic-power-supply-ss65...
http://pcpartpicker.com/part/seasonic-power-supply-ss65...
for the xfx and rosewill there are also modular versions with more money though.


Thnx for the info, can you please give me links of at least the semi-modular versions of these psu?
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March 4, 2014 1:47:33 AM

Kakorat119 said:


There lies my problem, those PSUs are over my budget.
How about this one? Does it meet the requirements?:
http://pcpartpicker.com/part/evga-power-supply-120pg065...


yes it is good enough for ur rig
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March 4, 2014 1:52:06 AM

yes its a rather new product with no reviews yet but i suppose a good one. fsp made and can fully operate at 50c. not seasonic class but good.
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March 4, 2014 1:53:46 AM

nashdes001 said:
Kakorat119 said:


There lies my problem, those PSUs are over my budget.
How about this one? Does it meet the requirements?:
http://pcpartpicker.com/part/evga-power-supply-120pg065...


yes it is good enough for ur rig


Ok, does it have 42A thingy? Lol im so noob. It says only 12v@20A
This one says 12v@54A(correct me if im wrong i dont know much):
http://pcpartpicker.com/part/corsair-power-supply-tx650...

This one says 12v@62A:
http://pcpartpicker.com/part/xfx-power-supply-p1750bbef...
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Best solution

March 4, 2014 2:00:26 AM
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March 4, 2014 2:11:42 AM

Kakorat119 said:
chris987 said:
636/12=53A it has split 12v rails
http://www.evga.com/Products/Product.aspx?pn=120-PG-065...


Ok so its good enough right? Soz last question.


as i said isnt that good as the semi modulars i suggested but will surely be more than enough. 650w at 50c 80lus gold and fully modular at 75$ i cant go wrong with that.
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