Wondering if my PSU is sufficient/PSU advice for 3 way 780,s.

[Xilent21]

I was wondering if my current powersupply (Nexus RX 1K 1000watt) can provide enough watts for my 3 way 780,s, link:
http://www.nxstek.com/Nexus_RX-1K_Modular_Quiet_Power_Supply_1000W.htm

it doesn't have enough connectors so incase it can, i'll need to buy some.

PS: i didn't connect the third one yet, since im really anxious about blowing up my powersupply and the rest of my rig. Some people said i should just try, but im not so sure about that.

Rig specs:
i7 3820 @ 4.8ghz
Corsair Vengeance 12GB DDR 1600MHZ
3x Asus GTX 780 (reference)
Crucial m4 128GB SSD
Samsung 840 pro 128GB SSD
Seagate barracuda 7200rpm 2tb
WD Blue 500GB
Lite-On IHAS124
Corsair H110

my budget incase i'll need to buy a new one: 170€

 

[NeverBackDown]

1000 watts should be enough. You said you don't have enough connectors.. as in cables or ports? If its ports then obviously you need a new psu.

 

[Xilent21]

1000 watts should be enough. You said you don't have enough connectors.. as in cables or ports? If its ports then obviously you need a new psu.

Cables.

Can you or anyone else recommend me some? since the only thing i can find are molex to 6 / 8 pins. which are not appealing to look at / the cables are kind of thin to use for a videocard.

 

[Davva2004]

You'll need a new PSU that has three PCIE cables with two connectors on each. You can't just add cables to an existing PSU.

 

[Xilent21]

You'll need a new PSU that has three PCIE cables with two connectors on each. You can't just add cables to an existing PSU.

Would this one do the job? http://www.evga.com/Products/Product.aspx?pn=120-G2-1000-XR

 

[Davva2004]

Yep, that's got 6 x 6/8 pin PCIE connectors so it'll support tri sli or tri crossfire.