I my psu powerful enough

[mattvan1]

Hi, I've got another gtx 780 directcu ii on the way that I want to sli. Will my psu be powerful enough for my system if I sli?
My complete list of components :
1 x motherboard Asus Maximus ranger vii z97
4 x 4gb 2400mhz Corsair vengeance pro ram
1 x cpu i7 4790k
1 x Corsair h60 cpu watercooling
1 x 1tb hard drive
1 x 250gb ssd
2 x gtx 780 sli
4 x 120mm case fans
1 x dvd drive
1 x Seasonic X Series 750w

My psu was really expensive so I hope it will be fine.

 

[Dunlop0078]

Yah it should be fine but you will probably come pretty close to tapping that psu out.

 

[Dark Lord of Tech]

You should jump up to a 850 watts.

PCPartPicker part list / Price breakdown by merchant

Power Supply: EVGA 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($119.99 @ NCIX US)
Total: $119.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-01-08 19:03 EST-0500

 

[mattvan1]

Thanks for the replies. I can't get the EVGA power supply you mentioned as I live in South Africa and I buy from www.landmarkpc.co.za
I've made a shortlist of three power supply units.
http://www.landmarkpc.co.za/store/seasonic-series-850w-modular-power-supply-p-9612.html
http://www.landmarkpc.co.za/store/corsair-ax860-860w-modular-power-supply-p-9371.html
http://www.landmarkpc.co.za/store/corsair-cp9020062ww-rm1000-1000w-modular-power-supply-p-10801.html
Which one do you think is the best in terms of build quality, power stability, and lifespan? Strange that the 1000w is the cheapest, it makes me think its got cheaper components.

 

[mattvan1]

I think the best is a single very powerful 12v rail but Im not too sure, also I don't know how many amps is enough on the 12v rail. All help is appreciated.

 

[mattvan1]

Bump

 

[Dark Lord of Tech]

Get the SEASONIC +12V@70A, - or the AX 860 +12V@71.6A, corsair , they are both great power supplies.

Both are made by SEASONIC. 😀

 

[Dunlop0078]

I think the best is a single very powerful 12v rail but Im not too sure, also I don't know how many amps is enough on the 12v rail. All help is appreciated.

A single 12v rail is generally better but there are some good multiple rail psu's. I would think at least 60amps on the 12v rail should be good for you just get something that is good quality you dont want a lackluster psu powering all of your rather expensive parts.

 

[mattvan1]

Thanks Dunlop and Blackbird for the help. Much appreciated. I think I'll go with the Seasonic x series 850w as I'm familiar with the x series psu's.

 

[Dark Lord of Tech]

Great choice