Add in that the power supply u have is to small for the video card. I have gts 250 nvidia card and i bumped mine up to 850w one cause 500w was to small and if i decide to go sli mode in future power supply is big enough for the added video card.

So double check the power supply. You dont want a delay in your shipping because you get an email saying you need a bigger power supply and need to scrap the money together to afford it.