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Appropriate PSU wattage HELP!

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December 24, 2012 9:19:59 AM

Hello! Newb here hope u guys could help me choose an appropriate WATTAGE of psu, im building a gaming/workstation pc

CPU: intel i7 3930k
Mobo: asus p9x79 pro
Ram: corsair vengeance 8gb 1600mhz
gpu: asus gtx dc2t 2gd5
hdd: wd caviar black 2tb
cpu cooler: CM hyper 212 evo turbo
os: windows 7 64bit
PSU: ???? ANY SUGGESTION

i might add another gpu next year
i might OC cpu, but not much

*another question guys :D  : i currently own a APC smart-ups 750xl (600w) UPS will that be enough for this build?

More about : psu wattage

December 24, 2012 9:33:51 AM

Well if you plan to add another GPU next year, you'll be fine, as long as it isn't the same one you currently have..
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December 24, 2012 9:39:05 AM

1. whats is that GPU how can i know what is that?
2.How much ram 2 sticks 1 3 4 how much?
3. if you oc to 3500 mhz and i guees like you have 670 gtx in sli all of that would consume 600 w so i reacommend in safety purposes get like 700w or 800w
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December 24, 2012 12:21:48 PM

I agree with Lager, personally, I've never heard of APC, could be some sort of generic brand, which usually isn't good news. If you're running a single 680, 600W will be fine, but if you're going to be adding another 680, you're going to need at least 750W, Seasonic PSUs are great (at least from what I've heard, which is nothing but good feedback), Corsair has a range of great power supplies too.
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December 24, 2012 1:12:10 PM

-Jackson said:
I agree with Lager, personally, I've never heard of APC, could be some sort of generic brand, which usually isn't good news. If you're running a single 680, 600W will be fine, but if you're going to be adding another 680, you're going to need at least 750W, Seasonic PSUs are great (at least from what I've heard, which is nothing but good feedback), Corsair has a range of great power supplies too.



mr. jackson, the APC is a UPS (Uninterruptible power supply) this is another querry im concerned with other than the PSU im asking
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December 24, 2012 3:11:30 PM

Yeah.. I realised shortly after posting..
My bad.
Personally, I'm not too bothered with a UPS since where I live, I'm hardly ever at the risk of a power outage.
But yeah, with the power supply, go with a Corsair or a Seasonic 850W.. I don't know a big deal about UPSes so I can't help you there.
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a c 1169 ) Power supply
a c 107 à CPUs
December 24, 2012 4:46:46 PM

For a system using a single GeForce GTX 680 graphics card NVIDIA specifies a minimum of a 550 Watt or greater power supply that has a combined +12 Volt continuous current rating of 38 Amps or greater and that has at least two 6-pin PCI Express supplementary power connectors.

For a system using two GeForce GTX 680 graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 750 Watt or greater power supply that has a combined +12 Volt continuous current rating of 53 Amps or greater and that has at least four 6-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Combined Continuous Power/Current Available on the +12V Rail(s) rated @ 45°C - 50°C ambient temperature, is the most important factor.

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

What length of battery backup time are you expecting from the APC Smart-UPS XL 750VA (600 Watts) UPS with this system configuration (i.e. with two GeForce GTX 680 in 2-way SLI mode) when a power interruption event happens?

What is your power supply budget amount?

CORSAIR AX760i 760W Digital ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS PLATINUM Certified Full Modular Active PFC Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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December 24, 2012 4:55:07 PM

ko888 said:
For a system using a single GeForce GTX 680 graphics card NVIDIA specifies a minimum of a 550 Watt or greater power supply that has a combined +12 Volt continuous current rating of 38 Amps or greater and that has at least two 6-pin PCI Express supplementary power connectors.

For a system using two GeForce GTX 680 graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 750 Watt or greater power supply that has a combined +12 Volt continuous current rating of 53 Amps or greater and that has at least four 6-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Combined Continuous Power/Current Available on the +12V Rail(s) rated @ 45°C - 50°C ambient temperature, is the most important factor.

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

What length of battery backup time are you expecting from the APC Smart-UPS XL 750VA (600 Watts) UPS with this system configuration (i.e. with two GeForce GTX 680 in 2-way SLI mode) when a power interruption event happens?

What is your power supply budget amount?

CORSAIR AX760i 760W Digital ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS PLATINUM Certified Full Modular Active PFC Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Was already aware of this, I have no doubts about the abilities of Seasonic or Corsair power supplies on maintaining current.
And imo, the new range of Corsair PSUs (Ones dubbed with an "i" at the end) are nice, but they cost a tad too much for comfort.
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a c 1169 ) Power supply
a c 107 à CPUs
December 24, 2012 4:58:32 PM

-Jackson said:
Was already aware of this, I have no doubts about the abilities of Seasonic or Corsair power supplies on maintaining current.
And imo, the new range of Corsair PSUs (Ones dubbed with an "i" at the end) are nice, but they cost a tad too much for comfort.

Are you the OP or is arsjchan the OP?
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a c 286 ) Power supply
a b à CPUs
December 24, 2012 5:00:59 PM

arsjchan said:
mr. jackson, the APC is a UPS (Uninterruptible power supply) this is another querry im concerned with other than the PSU im asking


Hi - tot sys power draw with 2 680's & 212 cooler will be approx 500w,
you don't need 850w (no harm in it either), a quality 750w
PSU is sufficient for your system even with OC.

Just stick with known good quality brands; Seasonic, XFX, PC P&C, Antec, Enermax,
Silverstone, most Corsair's, Rosewill capstone series.

With your rig I'd recommend going 1 or 2 steps up from the budget/opening price point
series of whichever brand you choose, to be consisitent with your build.

Tom
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a c 286 ) Power supply
a b à CPUs
December 24, 2012 5:02:15 PM

ko888 said:
Are you the OP or is arsjchan the OP?



LOL - Good one - you ko'd him
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December 24, 2012 5:04:39 PM

ko888 said:
Are you the OP or is arsjchan the OP?

I'm sorry if you misunderstood what I said, but it seemed like your previous post was somewhat also directed at me. No need to be bitter.
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a c 1169 ) Power supply
a c 107 à CPUs
December 24, 2012 5:09:56 PM

-Jackson said:
I'm sorry if you misunderstood what I said, but it seemed like your previous post was somewhat also directed at me. No need to be bitter.

I'm not bitter.

I asked the OP what their budget range was.

The power supply example, I gave, is to show just what kind of price can be expected at the extreme high end.
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December 24, 2012 5:12:42 PM

ko888 said:
I'm not bitter.

I asked the OP what their budget range was.

The power supply example, I gave, is to show just what kind of price can be expected at the extreme high end.

My post was directed at the first half of yours. Along with my recommendations for brands. In no way was I talking on the behalf of the OP.
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December 25, 2012 4:31:37 AM

ko888 said:
For a system using a single GeForce GTX 680 graphics card NVIDIA specifies a minimum of a 550 Watt or greater power supply that has a combined +12 Volt continuous current rating of 38 Amps or greater and that has at least two 6-pin PCI Express supplementary power connectors.

For a system using two GeForce GTX 680 graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 750 Watt or greater power supply that has a combined +12 Volt continuous current rating of 53 Amps or greater and that has at least four 6-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Combined Continuous Power/Current Available on the +12V Rail(s) rated @ 45°C - 50°C ambient temperature, is the most important factor.

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

What length of battery backup time are you expecting from the APC Smart-UPS XL 750VA (600 Watts) UPS with this system configuration (i.e. with two GeForce GTX 680 in 2-way SLI mode) when a power interruption event happens?

What is your power supply budget amount?

CORSAIR AX760i 760W Digital ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS PLATINUM Certified Full Modular Active PFC Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


Thanks for your input ko888. for the PSU my budget would be around $150 - $180.

right now im looking at FSP Aurum CM 750 coz its much cheaper but i just found out that its multi rail (4 rails @ 18amps) so would one of the rail could support the GTX680??? or should i get a single rail PSU???

and for the UPS: just as long i could safely turn off my pc say 6min to 10min maybe.... and yes i guess i would factor two gtx680 sli mode for future upgrades..

but i would also just like to know if one gtx680 and my set up could run on my existing UPS at 600w when power outage happens
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Best solution

a c 1169 ) Power supply
a c 107 à CPUs
December 25, 2012 6:18:07 PM

arsjchan said:
Thanks for your input ko888. for the PSU my budget would be around $150 - $180.

right now im looking at FSP Aurum CM 750 coz its much cheaper but i just found out that its multi rail (4 rails @ 18amps) so would one of the rail could support the GTX680??? or should i get a single rail PSU???

and for the UPS: just as long i could safely turn off my pc say 6min to 10min maybe.... and yes i guess i would factor two gtx680 sli mode for future upgrades..

but i would also just like to know if one gtx680 and my set up could run on my existing UPS at 600w when power outage happens

I would stay away from the FSP Aurum CM Gold 750W because techPowerUp.com found that it has voltage regulation problems on its +12V and +3.3V rails during full load and crossload testing.

The fan noise is noticeable even at a low load like 50 Watts.

I would consider the following PSUs before I would even look at the overpriced FSP Aurum CM Gold 750W:

CORSAIR HX Series HX750 750W ATX12V 2.3 / EPS12V 2.91 SLI Ready CrossFire Ready 80 PLUS GOLD Certified Modular Active PFC Power Supply for $129.99 ($119.99 after $10.00 rebate card if purchased between December 22, 2012 and December 28, 2012 at Newegg.com and Newegg.ca)
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

SeaSonic X750 Gold 750W ATX12V V2.3/EPS 12V V2.91 SLI Ready 80 PLUS GOLD Certified Full Modular Active PFC Power Supply for $149.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

XFX P1-750B-BEFX 750W ATX12V 2.2 & ESP12V 2.91 SLI Ready CrossFire Ready 80 PLUS GOLD Certified Full Modular Active PFC Power Supply for $139.99 ($119.99 after $20.00 rebate card if purchased between December 20, 2012 and December 31, 2012 at Newegg.com)
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Made by Seasonic for XFX. Based on the Seasonic SS-750KM³ platform.

When using one ASUS GeForce GTX 680 Direct CU II TOP 2 GB GDDR5 [GTX680-DC2T-2GD5] the power consumption, for the card itself, is 189 Watts during gaming.

If you encounter a power interruption event during your gaming session your system may be drawing somewhere between 350 - 400 Watts. If your display is also connected up to a battery backup outlet on the same UPS you will also need to add its power consumption to the system power consumption to determine the total power draw on the UPS.

I doubt, very much, that you're going to get anywhere near the 6 to 10 minutes of battery runtime that you're looking for except maybe if your system is in idle.
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a c 286 ) Power supply
a b à CPUs
December 25, 2012 7:25:24 PM

arsjchan said:
Thanks for your input ko888. for the PSU my budget would be around $150 - $180.

right now im looking at FSP Aurum CM 750 coz its much cheaper but i just found out that its multi rail (4 rails @ 18amps) so would one of the rail could support the GTX680??? or should i get a single rail PSU???

and for the UPS: just as long i could safely turn off my pc say 6min to 10min maybe.... and yes i guess i would factor two gtx680 sli mode for future upgrades..

but i would also just like to know if one gtx680 and my set up could run on my existing UPS at 600w when power outage happens


Hi again - ko gave you ex suggestions, but if you are considering the Seasonic X-750, and you are
purch soon, then you should get the Seasonic X-850 at Newegg as right now it is
on promo and is cheaper than the X-750:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Tom
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December 26, 2012 4:12:09 AM

ko888 said:
I would stay away from the FSP Aurum CM Gold 750W because techPowerUp.com found that it has voltage regulation problems on its +12V and +3.3V rails during full load and crossload testing.

The fan noise is noticeable even at a low load like 50 Watts.

I would consider the following PSUs before I would even look at the overpriced FSP Aurum CM Gold 750W:

CORSAIR HX Series HX750 750W ATX12V 2.3 / EPS12V 2.91 SLI Ready CrossFire Ready 80 PLUS GOLD Certified Modular Active PFC Power Supply for $129.99 ($119.99 after $10.00 rebate card if purchased between December 22, 2012 and December 28, 2012 at Newegg.com and Newegg.ca)
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

SeaSonic X750 Gold 750W ATX12V V2.3/EPS 12V V2.91 SLI Ready 80 PLUS GOLD Certified Full Modular Active PFC Power Supply for $149.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

XFX P1-750B-BEFX 750W ATX12V 2.2 & ESP12V 2.91 SLI Ready CrossFire Ready 80 PLUS GOLD Certified Full Modular Active PFC Power Supply for $139.99 ($119.99 after $20.00 rebate card if purchased between December 20, 2012 and December 31, 2012 at Newegg.com)
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Made by Seasonic for XFX. Based on the Seasonic SS-750KM³ platform.

When using one ASUS GeForce GTX 680 Direct CU II TOP 2 GB GDDR5 [GTX680-DC2T-2GD5] the power consumption, for the card itself, is 189 Watts during gaming.

If you encounter a power interruption event during your gaming session your system may be drawing somewhere between 350 - 400 Watts. If your display is also connected up to a battery backup outlet on the same UPS you will also need to add its power consumption to the system power consumption to determine the total power draw on the UPS.

I doubt, very much, that you're going to get anywhere near the 6 to 10 minutes of battery runtime that you're looking for except maybe if your system is in idle.


Wow ko888 youre brilliant! thank you! ok i'll take your advice i'll either get the seasonic x750 or x850 or the platinum if they give me good discount haha... corsair in our country cost +-10% more than seasonic

as for the UPS thing.... so 600w could run my system its just that it coudnt run than long right? ok so i think im gona get me some extra battery back by APC! :D 

as for the monitor im using a 23" led it is rated at 50w max... next year im might buy a 26-27" led so lets say 100w max... still fit the 600W ups right? hehe
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December 26, 2012 4:19:17 AM

toyftw said:
Hi again - ko gave you ex suggestions, but if you are considering the Seasonic X-750, and you are
purch soon, then you should get the Seasonic X-850 at Newegg as right now it is
on promo and is cheaper than the X-750:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Tom


thanks tom! :) 
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December 31, 2012 6:12:56 AM

Best answer selected by arsjchan.
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