power supply issue

[marty48071]

is it necessary to have both the standard 24 pin and the extra 8 pin power plugs pluged in, in order to run my new 8 gb video card that is getting its power directly supply via 6pin cable. I jusbought this new card and I'm not getting any display

 

[clutchc]

(double post) http://www.tomshardware.com/answers/id-3289309/video-card-power.html