Need question answered!

What power supply do you have?

If you only have a single 12 V rail that has 22 A on it, and you have a strong CPU in that system then its not a good idea to run that card on that PSU as you only have 264 W available from your 12 V rail and the card needs 170 W at peak, that only leaves about 90 W for your CPU and other components which likely won't be enough.