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help pick psu

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  • Power Supplies
  • Graphics Cards
  • Build
  • Components
Last response: in Components
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March 18, 2014 7:46:47 PM

Hi so Ill be doing my first pc build I need help picking a power supply im wondering if corasair 850w 80gold is enough for my build so these are the parts and ill be over clocking and will be watercooled
http://ca.pcpartpicker.com/user/kwoods93/saved/46aG

More about : pick psu

a b ) Power supply
a b U Graphics card
March 18, 2014 8:00:42 PM

http://ca.pcpartpicker.com/user/Danbuscus250/saved/46bk... Intel Core i7-4770K 3.5GHz Quad-Core $339.79
Motherboard Asus MAXIMUS VI FORMULA ATX LGA1150 $309.00
Memory Corsair Vengeance LP 16GB (2 x 8GB) DDR3-1866 $194.99
Storage Samsung 840 EVO 250GB 2.5" SSD $179.99
Seagate Barracuda 2TB 3.5" 7200RPM $89.99
Video Card EVGA GeForce GTX 780 Ti 3GB $749.99
EVGA GeForce GTX 780 Ti 3GB $749.99
Case Cooler Master Storm Trooper (White) ATX Full Tower $165.50
Power Supply Silverstone 1350W ATX12V / EPS12V $365.99
Optical Drive Asus BW-12B1ST/BLK/G/AS Blu-Ray/DVD/CD Writer $74.50
Operating System Microsoft Windows 8.1 (OEM) (64-bit) $99.99
Custom swiftwch mcp 655 pump 12v $89.99
Total: $3409.71
ok, i added a psu that will work. it was the cheapest i could find that had atleast 120amps on the 12v rail (it has 6 12v rails at 30 amps each) cuz each 780ti takes up to 59 amps.
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March 18, 2014 8:13:43 PM

Danbuscus25 said:
http://ca.pcpartpicker.com/user/Danbuscus250/saved/46bk... Intel Core i7-4770K 3.5GHz Quad-Core $339.79
Motherboard Asus MAXIMUS VI FORMULA ATX LGA1150 $309.00
Memory Corsair Vengeance LP 16GB (2 x 8GB) DDR3-1866 $194.99
Storage Samsung 840 EVO 250GB 2.5" SSD $179.99
Seagate Barracuda 2TB 3.5" 7200RPM $89.99
Video Card EVGA GeForce GTX 780 Ti 3GB $749.99
EVGA GeForce GTX 780 Ti 3GB $749.99
Case Cooler Master Storm Trooper (White) ATX Full Tower $165.50
Power Supply Silverstone 1350W ATX12V / EPS12V $365.99
Optical Drive Asus BW-12B1ST/BLK/G/AS Blu-Ray/DVD/CD Writer $74.50
Operating System Microsoft Windows 8.1 (OEM) (64-bit) $99.99
Custom swiftwch mcp 655 pump 12v $89.99
Total: $3409.71
ok, i added a psu that will work. it was the cheapest i could find that had atleast 120amps on the 12v rail (it has 6 12v rails at 30 amps each) cuz each 780ti takes up to 59 amps.


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March 18, 2014 8:17:11 PM

So I need 1350w powersupply for my build? 850 is not enough I seen that the 750ti uses 250 each so I got 350 to spare right and the cpu takes 84watts and the only thing left would be a 12v pump i might be wrong but 1350w seems like alot
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a b ) Power supply
a b U Graphics card
March 18, 2014 8:19:12 PM

well, its not about watts, but amps. the 780 and 780ti take 59 amps each, so you need an absolute minimum of 118 amps without any problems.
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March 18, 2014 8:30:23 PM

Danbuscus25 said:
well, its not about watts, but amps. the 780 and 780ti take 59 amps each, so you need an absolute minimum of 118 amps without any problems.


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March 18, 2014 8:31:18 PM

Oh ok so what if I go with one 780ti with that build would 850w platinum be good?
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March 18, 2014 8:35:01 PM

For a system using one GTX 780 Ti video 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.

Yes a 850w platinum is perfect. Gives you enough room to overclock your cpu/gpu.

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a c 1205 ) Power supply
a c 566 U Graphics card
March 18, 2014 8:41:24 PM

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 67 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.

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.

The Swiftech MCP 655 pump will draw 21 Watts if you decide to add it.
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a c 1205 ) Power supply
a c 566 U Graphics card
March 18, 2014 8:49:23 PM

kwoods93 said:
Oh ok thanks so yea ill just go with one and will this power supply be good thanks http://m.ncix.com/products/specifications/77638


It's a very highly rated power supply by all of the professional power supply reviewers/testers.
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March 18, 2014 8:49:44 PM

ko888 said:
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 67 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.

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.

The Swiftech MCP 655 pump will draw 21 Watts if you decide to add it.


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a c 2356 ) Power supply
a c 892 U Graphics card
March 18, 2014 8:51:18 PM

Good choice.

Tier 1 Brands - The Most Powerful And Stable Components On The Market.

Antec Signature
Antec High Current Pro -1200w
Antec HCP Platinum 1kW
Cooler Master V series 700, 850, 1kW
Corsair AX
Enermax Galaxy
Enermax Revolution
EVGA SuperNova G2 1000W and 1300W
Kingwin Lazer Platinum
PCP&C TurboCool
PCP&C Silencer Greater than 610 watt
Sapphire Pure
Seasonic X-Series
Seasonic S12D/M12D
Silverstone ZF (Etasis 85/75/56)
Seventeam ST Greater than 600w (SSI, V2.91)
Silverstone OP/DA Greater than 700 watt
Silverstone ZM
Ultra X3 Greater than 1000 watt
XFX Black Edition
XFX XXX Edition
Zippy/Emacs SSL
Zippy/Emacs GSM
Zippy/Emacs PSL
Zippy/Emacs HG2
Zippy/Emacs HP2
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March 18, 2014 8:52:10 PM

Ok so what would be a good powersupply then if I got 2 780ti and overclocked I dont know much about it and something thats not to expensive but good quality
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a c 2356 ) Power supply
a c 892 U Graphics card
March 18, 2014 8:53:59 PM

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: EVGA SuperNOVA 1300 G2 1300W 80+ Gold Certified Fully-Modular ATX Power Supply ($202.98 @ SuperBiiz)
Total: $202.98
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-03-18 23:53 EDT-0400)


Tier 1 Brands - The Most Powerful And Stable Components On The Market.

Antec Signature
Antec High Current Pro -1200w
Antec HCP Platinum 1kW
Cooler Master V series 700, 850, 1kW
Corsair AX
Enermax Galaxy
Enermax Revolution
EVGA SuperNova G2 1000W and 1300W
Kingwin Lazer Platinum
PCP&C TurboCool
PCP&C Silencer Greater than 610 watt
Sapphire Pure
Seasonic X-Series
Seasonic S12D/M12D
Silverstone ZF (Etasis 85/75/56)
Seventeam ST Greater than 600w (SSI, V2.91)
Silverstone OP/DA Greater than 700 watt
Silverstone ZM
Ultra X3 Greater than 1000 watt
XFX Black Edition
XFX XXX Edition
Zippy/Emacs SSL
Zippy/Emacs GSM
Zippy/Emacs PSL
Zippy/Emacs HG2
Zippy/Emacs HP2
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a c 1205 ) Power supply
a c 566 U Graphics card
March 18, 2014 8:56:08 PM

kwoods93 said:
Ok so what would be a good powersupply then if I got 2 780ti and overclocked I dont know much about it and something thats not to expensive but good quality


What's wrong with the Corsair AX860i that you chose? It's one of the best power supplies on the market.
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a b ) Power supply
a b U Graphics card
March 18, 2014 8:56:38 PM

SR-71 Blackbird said:
PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: EVGA SuperNOVA 1300 G2 1300W 80+ Gold Certified Fully-Modular ATX Power Supply ($202.98 @ SuperBiiz)
Total: $202.98
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-03-18 23:53 EDT-0400)


Tier 1 Brands - The Most Powerful And Stable Components On The Market.

Antec Signature
Antec High Current Pro -1200w
Antec HCP Platinum 1kW
Cooler Master V series 700, 850, 1kW
Corsair AX
Enermax Galaxy
Enermax Revolution
EVGA SuperNova G2 1000W and 1300W
Kingwin Lazer Platinum
PCP&C TurboCool
PCP&C Silencer Greater than 610 watt
Sapphire Pure
Seasonic X-Series
Seasonic S12D/M12D
Silverstone ZF (Etasis 85/75/56)
Seventeam ST Greater than 600w (SSI, V2.91)
Silverstone OP/DA Greater than 700 watt
Silverstone ZM
Ultra X3 Greater than 1000 watt
XFX Black Edition
XFX XXX Edition
Zippy/Emacs SSL
Zippy/Emacs GSM
Zippy/Emacs PSL
Zippy/Emacs HG2
Zippy/Emacs HP2


the psu you listed does not have the recommended amount of amps on the 12v rail.
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a c 1205 ) Power supply
a c 566 U Graphics card
March 18, 2014 9:04:46 PM

Danbuscus25 said:
the psu you listed does not have the recommended amount of amps on the 12v rail.


Please explain how a GeForce GTX 780 Ti that has a 250 Watt TDP draws 59 Amps as you claim?

An EVGA GeForce GTX 780 Ti Superclocked w/EVGA ACX Cooler 3 GB [03G-P4-2884-KR] card draws less than 24 Amps from the +12V rails. That's just for the graphics card itself.
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March 18, 2014 9:05:12 PM

Lol so the evga1300w is no good and the 860i I would get but I wanna sli later down the road and Im not sure if id be able to so I wanna by a powersupply now that way when I sli I dont gotta trash it and by a new one and danbuscus you seem to know what your talking about and the powersupply you listed for 365$ is the cheapest you could find
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a c 1205 ) Power supply
a c 566 U Graphics card
March 18, 2014 9:08:12 PM

kwoods93 said:
Lol so the evga1300w is no good and the 860i I would get but I wanna sli later down the road and Im not sure if id be able to so I wanna by a powersupply now that way when I sli I dont gotta trash it and by a new one and danbuscus you seem to know what your talking about and the powersupply you listed for 365$ is the cheapest you could find


I specifically gave you the system power supply requirement for two GeForce GTX 780 Ti graphics cards in 2-way SLI mode. How is it not enough?
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a b ) Power supply
a b U Graphics card
March 18, 2014 9:08:31 PM

my bad, the 780ti uses 42 amps.
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March 18, 2014 9:08:59 PM

So k0888 the 860i would be good if I went sli and I seen on the website that it says 250 so and cpu is 84 and pump is 12v so if I overclocked I though it would of worked but he says it goes by amps or w.e I have no idea just need a answer im rdy to build my pc lmfao
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a c 1205 ) Power supply
a c 566 U Graphics card
March 18, 2014 9:12:01 PM

kwoods93 said:
So k0888 the 860i would be good if I went sli and I seen on the website that it says 250 so and cpu is 84 and pump is 12v so if I overclocked I though it would of worked but he says it goes by amps or w.e I have no idea just need a answer im rdy to build my pc lmfao


Yes, as I've said in my replies above, the Corsair AX860i will handle two GeForce GTX 780 Ti graphics cards in 2-way SLI mode.
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a c 1205 ) Power supply
a c 566 U Graphics card
March 18, 2014 9:18:04 PM

Danbuscus25 said:
my bad, the 780ti uses 42 amps.


No it doesn't.

The reference system configuration that NVIDIA uses to determine the system power supply requirements draws a total of 42 Amps from the +12V rails and that includes the graphics card's current draw.

The reference system is based on a PC configured with an Intel Core i7-3930K 3.2GHz 130 Watt TDP processor.

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March 18, 2014 9:27:53 PM

Ok so the corsair 860i is good even if I wanna overclock 2 780ti and i74770k 3.5 to about 4.5 if so ill get it
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Best solution

a c 1205 ) Power supply
a c 566 U Graphics card
March 18, 2014 9:32:23 PM

kwoods93 said:
Ok so the corsair 860i is good even if I wanna overclock 2 780ti and i74770k 3.5 to about 4.5 if so ill get it


Yes.
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March 18, 2014 9:35:51 PM

Ok il go with that power supply thanks for the help
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