Trying to install R9 290X Lightning, help!

[drfisher]

Writing this on my phone for obvious reasons (including lack of forethought) -

I'm a little stumped by the power sockets, it has 1x6 pin and 2x 8 pin..
My PC has 4 6 pin power cables available (from my old xfired cards).

The instructions with the card are very minimalist,
So I'm not clear what I should /shouldn't do.

The new card does have one 6pin to 8pin cable converter.

This means that I could plug in one native 6 pin cable and one that is modified to 8 pin with the converter.

Would this be okay...? *gulp*

 

[drfisher]

Oh it's a little more complicated, 2 of the 6pin cables from the PSU have an extra 2 pins tied back. Presumably I can plug these into the 8 pin slots and put one of the 6 pin cables in the other slot. I guess my main concern is I don't want to plug too much into the card! As long as that isn't possible I'm ok. I'm also unclear as to what the minium cable requirement for the card is.