Yes, those are the PCI/PEG cables. VGA1-4 are for graphics cards. Sorry for the confusion. Usually they are called PCI, PCI-E or PEG like seen here:
Not suprising that EVGA calls them VGA, and I should have known that since they are one of my preferred brands for power supplies and graphics cards, since their name literally reads e-VGA, and that was actually originally the way their name was spelled with a small e and then VGA.
You have MORE than enough capacity with that unit. Your graphics card only needs a good 520w unit, but it hurts nothing to have the extra overhead. That is a terrific unit and while any unit can be faulty, unless yours is quite old it is very unlikely in this case. The G2 units are high quality. Better than 90% of what else is out there in fact. Any of the better models (And there are some pretty questionable ones from all these companies as well) from Corsair, EVGA, Seasonic or Antec are good choices, and are generally reliable. Obviously though, anything is possible and getting a lemon is always a distinct possibility, but it's a lot more likely to be a problem with your graphics card or motherboard than it is to be that power supply if it is less than three years old.