I have a question about the cables required to run a EVGA GTX780 Hydro.
 
My current setup is an EVGA G2 850 PSU, EVGA GTX 780 Hydro card, EVGA X58 FTW mbrd, they have served me well and I am very happy with them, but I thought I would try SLI for the first time while waiting for Pascal to come out (from EVGA of course). So I find an identical EVGA card to my existing one on the market and eagerly look forward to receiving it.
 
Card arrives ok and on time, but my first question when I open the new card is that I see it comes with 2 sets of compression fittings, after checking the box for my existing card I find my original didnt. I never noticed this shoratge to start with as I had bought a complete set of barbs, tubes, reservoir and pump before hand.
So I contact support and try to explain the problem, enquiring if I could get a set of the 1/2"-3/4" EVGA fittings, short story was ..  go to the shop and buy them. This is difficult as they are not listed in the EVGA shop. Not a big problem, I go and by 4 new compression fittings from elsewhere (Barrow make for those interested, so far I am impressed with them).
 
Now we come to my main question. I have found that my original 780 requires 2 cables with the 6+2 connectors to work, it does not work with the 6+8 psu connector cable (msg appears on the screen about adding the correct cable). I am assuming that it needs the extra power for the overclocking.
This wasnt a big issue as the 850 came with 2x PSU to 8 pin VGA power cables, so I used those.
 
Now I have bought the 2nd card, I have found all I have available to use from the 850 supplied cables is a single PSU to 6+8 connector cable. Yet looking at the parts listing on the box I should have had 2 of these not just the one I have. Again not a big issue if I cant use them with my current cards.
 
So the question is .. Do I need to source an additional 8+8 cable from EVGA or can I get the 780 to use the existing 6+8 cable I have?
 
(as a note, I also have a corsair 860 psu in another pc and that comes with 2x 8+8 cables as standard, I could swap the psus around, but I would have preferred to keep my PC as an "EVGA" PC)
 
I should also mention the psu arrived with a Euro mains plug, which surprised me as I live in the UK and had it shipped there. I thought that the correct power cable had to be supplied. Also not a big problem as I had loads of UK versions aorund, but just a note for EVGA.

I just purchased the 850 G2 SuperNOVA from Newegg within the last week and can confirm it came with the 2x (6+2) and 2x (6+2) + 6 just as the manual shows should be included.