I have a question concerning the subject:

I have the EPS12V connector on my psu I am not using it though there was a cap on my motherboard so I just decided to use the 4pin. I read up more on it and it said it was to power the video card that is why i decided i'd rather the power not go thru my motherboard and just used the the 4pin than plugged in my video card thru my psu.