2x GTX 780 SLI what PSU do i need ?

[Jack Baker]

I currently have a EVGA GTX 780, im looking to add another one in for sli, what size PSU will i need, i currently have a Corsair cx750m, is that big enough, im not looking to overclock them.

 

[Guest]

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139051
from a review by edward s. :
"This review is from: CORSAIR CX series CX750M 750W ATX12V v2.3 80 PLUS BRONZE Certified Modular Active PFC Power Supply New 4th Gen CPU Certified
Pros: a great psu for the price
powers my gtx 970 sli

That could be a model of the card or it could be two of them, nvidia suggests a 600 w for one.

 

[1LiquidPC]

What are the rest of your system specs, as it would help for PSU calculations. Also, as chainsaw mentioned having SLI 970s, they use considerably less power than 780s. Probably 150 to 200W less than 2 780s.

 

[Jack Baker]

What are the rest of your system specs, as it would help for PSU calculations. Also, as chainsaw mentioned having SLI 970s, they use considerably less power than 780s. Probably 150 to 200W less than 2 780s.

My specs are,
quad core i5 3570k @ 4.5Ghz
8GB ram
1x 240GB SSD
1x 500GB HDD
1x 2TB HDD
Corsair CX750M

I already have one 780 so it would be kinda a waste of money to just get rid of that and buy 2 more GPU's im not bothered about power usage, i just hoping i dont need another psu, but if i do, no big deal.

 

[1LiquidPC]

You might be able to squeeze by using your current PSU, but I think you would be pushing it both w/ the available wattage and the fact that the CX series is Corsair's entry level PSU series. Again, it may work fine, but you may shorten the lifespan of the PSU depending on how gaming your doing w/ 2 780s.

 

[Dark Lord of Tech]

I currently have a EVGA GTX 780, im looking to add another one in for sli, what size PSU will i need, i currently have a Corsair cx750m, is that big enough, im not looking to overclock them.

You need a decent 850w.

Get a EVGA G2 850W.

 

[Dark Lord of Tech]

I currently have a EVGA GTX 780, im looking to add another one in for sli, what size PSU will i need, i currently have a Corsair cx750m, is that big enough, im not looking to overclock them.

PCPartPicker part list / Price breakdown by merchant

Power Supply: EVGA 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($117.99 @ NCIX US)
Total: $117.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-04-03 22:13 EDT-0400

OR

PCPartPicker part list / Price breakdown by merchant

Power Supply: EVGA 850W 80+ Bronze Certified Semi-Modular ATX Power Supply ($79.99 @ NCIX US)
Total: $79.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-04-03 22:13 EDT-0400

 

[spentshells]

Im pretty sure it's time for a better psu, I do tend to defend the cx series quite often here. With a reasonable amount of knowledge of this product line I have to say get something new.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817207011&ignorebbr=1 '

79 after rebate not too shabby