could you be more specific? your gfx does not require a 6pin female connector or your psu doesn't come with a 6 pin male connector?
if your gfx card doesn't come with female connector, then it doesn't need one. run it the way it is.
if your gfx card come with a female 6pin, but your psu doesn't come with a 6pin male, then the card won't work and you need either an adapter or a new psu.