Need a power supply

[nick546]

Hello,

I need to know the best power supply for my new custom build pc.

Specs:
-i7 4770k 3.5

-Noctua nh-d14 (not sure about this one, if anyone knows a better one please tell)

-EVGA gtx 780ti dual SC classified

-Kingston hyperX beast 2x8

-Asus Maximus VI Extreme

-Western Digital Red 2TB sata III

-Corsair sata III SSD 128 gb neutron series

-Asus rog xonar phoebus

Thanks~

 

[ko888]

For a system using a single GeForce GTX 780 Ti graphics card NVIDIA specifies a minimum of a 600 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 42 Amps or greater and that has at least one 6-pin and one 8-pin PCI Express supplementary power connectors. There are some non-reference design cards that require two 8-pin PCI Express supplementary power connectors.

For a system using two GeForce GTX 780 Ti graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 850 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 62 Amps or greater and that has at least two 6-pin and two 8-pin PCI Express supplementary power connectors. There are some non-reference design cards that require two 8-pin PCI Express supplementary power connectors.

For a system using three GeForce GTX 780 Ti graphics cards in 3-way SLI mode NVIDIA specifies a minimum of a 1100 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 85 Amps or greater and that has at least three 6-pin and three 8-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) is the most critical factor.

Overclocking of the CPU and/or GPU(s) may require an additional increase to the maximum combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock. The additional amount required will depend on the magnitude of the overclock being attempted.

 

[aevm]

http://pcpartpicker.com/part/evga-power-supply-120pg0650gr

And yes, the NH-D14 is the best...

 

[Dark Lord of Tech]

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: EVGA SuperNOVA 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($74.99 @ Microcenter)
Total: $74.99
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-01-27 12:58 EST-0500)


or


PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: XFX XTR 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($116.66 @ Newegg)
Total: $116.66
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-01-27 13:00 EST-0500)


or


PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: Rosewill Capstone 650W 80+ Gold Certified Semi-Modular ATX Power Supply ($99.99 @ Newegg)
Total: $99.99
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-01-27 13:02 EST-0500)

 

[aevm]

Are you planning to add a second GTX 780 Ti later? In that case get one of these:
http://pcpartpicker.com/mr/newegg/silverstone-power-supply-st85fp
http://pcpartpicker.com/mr/newegg/corsair-power-supply-hx850

 

[nick546]

Are you planning to add a second GTX 780 Ti later? In that case get one of these:
http://pcpartpicker.com/mr/newegg/silverstone-power-supply-st85fp
http://pcpartpicker.com/mr/newegg/corsair-power-supply-hx850

I am planning to do a 3 way sli after a year, but for now i will use only one.

 

[Dark Lord of Tech]

I listed 3 above that will easily power the single card.

 

[aevm]

http://www.guru3d.com/articles_pages/gtx_780_ti_sli_geforce_review,4.html

Get something rated 1200W or more. That will allow 3 GTX 780 Ti cards.
http://pcpartpicker.com/mr/amazon/seasonic-power-supply-x1250
http://pcpartpicker.com/mr/superbiiz/evga-power-supply-120g21300xr

LOL, all out of stock. Here's one that seems to be in stock:
http://www.mwave.com/mwave/skusearch.asp?px=CJ&scriteria=AA95127

 

[nick546]

I listed 3 above that will easily power the single card.

http://www.guru3d.com/articles_pages/gtx_780_ti_sli_geforce_review,4.html

Get something rated 1200W or more. That will allow 3 GTX 780 Ti cards.
http://pcpartpicker.com/mr/amazon/seasonic-power-supply-x1250

Thanks a lot.I'll definitely consider this if i buy the cards sooner!

 

[lonewolf7]

A single GTX 780Ti will use 250W on max load with 42 Ampere on +12V rail, so 3 way SLI of 780Ti's will use atleast 750/800W with 126 Ampere on +12V rail. You may consider this PSU for your future need :

BTW I think 3 way SLI will be bottlenecked by CPU, so you be better off with 2 way SLI. Though 4 way SLI of 780Ti is officially supported by NVidia.

http://www.geforce.com/whats-new/articles/introducing-the-geforce-gtx-780-ti

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: XFX ProSeries 1050W 80+ Gold Certified Fully-Modular ATX Power Supply ($198.98 @ Newegg)
Total: $198.98
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-01-27 13:28 EST-0500)

 

[aevm]

A single GTX 780Ti will use 250W on max load with 42 Ampere on +12V rail, so 3 way SLI of 780Ti's will use at least 750/800W with 126 Ampere on +12V rail.

Not quite. One GTX 780 Ti does not consume 42A*12V=504W alone. It's more like 264W, i.e. 22A
http://www.guru3d.com/articles_pages/msi_geforce_gtx_780_ti_gaming_review,7.html

The 42A is for MB + CPU + RAM + GTX 780 Ti. If you want 3 GTX 780 Ti you add up 42A+22A+22A = 86A, so you only count the CPU/MB/RAM once.

 

[lonewolf7]

@ aevm, maximum graphics card power in the above link is what the card itself actually uses at reference clockspeeds, divide by 12v and you get how many amps it actually uses. GTX780ti indicates 250W, or 20.8A each. You should clearly see that a pair of GTX780ti use almost all the power you have available leaving almost none for the CPU, drives and fans which all draw power from 12v as well.

minimum system requirement is based on a configuration that nVidia made up (and doesn't tell us), added in their card, added in an overhead (fudge factor) and then quoted power. The system requirement only exists for tech support to determine liability and whether you get warranty or not. You can't assume it is a function minimum since nVidia/EVGA don't know what you have. If you want, you can add the minimum system to graphics power and get a total for SLI, but that would 600 + 250 = 850W.

So basically 3 way SLI of 780ti requires 84 A (83.6) of current not 86 A.

 

[ko888]

The OP's card is a non-reference design card: