670 sli power supply unit

[basch99]

How much watts of power would I need to power two GIGABYTE windforce gtx 670 at approx 1.2 Ghz overclock with core i5-3570K?

 

[vmem]

well, there's no telling how much power you'll need to take it to 1.2 Ghz. but with one 6-pin and one 8-pin connector plus the PCIe slot, it can TAKE a maximum of something like 240 watts. considering your i5, I'd say a well made 600W PSU with something like 25A per rail on the 12V rail should be fine.

I particularly like this one
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151088

 

[Zero_]

I'd suggest around 700W. Get a OCZ Modextreme 700W for around $80 or a PC P&C Silencer 750W for around $90.

 

[vmem]

Ops, sry, didn't read the Slli part. I'd say 750-800w

You probably CAN do it on the sea sonic, but I assume you'll be running a bunch of fans etc

 

[sunnk]

get this psu at cheaper price and its gold certified psu.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817103080

it has got 5 out of 5 eggs which means that customers are happy with it.

so go with it goodluck.

 

[Guest]

Man you guys are not leaving much headroom. GeForce GTX 670 2x SLI - On your average system the cards require you to have a 700 Watt power supply unit as minimum.

I wouldnt get anything less then a good 800 watt psu and if you plan to overclock anything 850 watt.Id go with something like this http://www.newegg.com/Product/Product.aspx?Item=N82E16817139022&Tpk=corsair%20850 $115 after mail in..

 

[randomkid]

How much watts of power would I need to power two GIGABYTE windforce gtx 670 at approx 1.2 Ghz overclock with core i5-3570K?

NVidia Website itself put the power requirement of the 670 at 170W max per card. With a recommended system power requirement of 500W for single card configuration, I would say 700 as minimum for 2x670. Add 50W for overclocking to be on the safer side.

But there is also a PSU calculator that allows you to input your desired system configuration to estimate its power requirement.
http://extreme.outervision.com/PSUEngine
It still does not have 670 in its drop down options for graphics cards but you can just enter 680 to be on the safe side. But I use this only to check if existing PSU can support the desired upgrade.

 

[vmem]

NVidia Website itself put the power requirement of the 670 at 170W max per card. With a recommended system power requirement of 500W for single card configuration, I would say 700 as minimum for 2x670. Add 50W for overclocking to be on the safer side.

But there is also a PSU calculator that allows you to input your desired system configuration to estimate its power requirement.
http://extreme.outervision.com/PSUEngine
It still does not have 670 in its drop down options for graphics cards but you can just enter 680 to be on the safe side. But I use this only to check if existing PSU can support the desired upgrade.

Keep in mind he's buying the Gigabyte OCed card with modified connections (8-pin/6-pin) instead of two 6-pin. Given the huge OC he wants, I'd say it's powerdraw will be closer to a reference 7970 than a 670/680

@mikem yeah... I'm just telling him that he'll need 700W to run that system minimum... OP asked how much power he needs. but yeah, I agree with you on that PSU for actual usage. nice find!

 

[evan1715]

get the corsair 750w, it also comes with 5 year warranty.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139021
i have it and its pretty good.
i also i have a 3770K OC'd to 4.5GHz and i plan to get 670 SLI aswell.
ivy bridge and kepler are more power efficient than previous generations.

 

[basch99]

so your're saying that a 750w psu can do SLi with my GIGABYTE GTX 670 - which has a TDP of 550w across the system - can it handle though if I do some minor overclocking for both gpus - maybe a boost of 100 mhz each and no overclock on the cpu side?

 

[Guest]

Just spend alittle extra money and get a good 850 watt.If your questioning what you need then be safer spend a few extra on a bigger psu.Beats frying your whole system.

 

[basch99]

you know what? to the hell with an SLi 670 - I'll wait for a die-shrink nvidia pci 3.0 card maybe in the gtx 870 or something and SLi that in the future because of lower TDP and greater performance since I just purchased a nice 750w modular psu with 30 dollar rebates

 

[basch99]

Best answer selected by basch99.

 

[Mousemonkey]

This topic has been closed by Mousemonkey