Wanted to add some useful information for the next readers of the thread. I was reading user comments on Newegg's site about the XFX video card I was looking at. I had questioned the power needs, and - this post from XFX support mirrored what the helpful folks here have been saying.
BUT - it's nice to hear it from them, right?
From http://www.newegg.com/Product/Product.a ... 6814150678
a vendor response to a review.
Hello, We're sorry you are having issues with your card.
This unit requires a consistant 20+ amp PSU, very common. Anything Bronze Rated and 500 Watts should work without problems.
If you have any questions, please contact us at email@example.com