2x GTX 780 SLI what PSU do i need ?

Jack Baker

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May 21, 2013
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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.
 

Dark Lord of Tech

Retired Moderator
Aug 18, 2009
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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
 

Jack Baker

Honorable
May 21, 2013
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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.
 
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

Retired Moderator
Aug 18, 2009
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You need a decent 850w.

Get a EVGA G2 850W.
 

Dark Lord of Tech

Retired Moderator
Aug 18, 2009
127,573
1,445
154,890
25,198


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
 

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