I tested the card in my wife's computer with success. Ran a Furmark and scored around 8000. Ran WoW on ultra settings with no problems.
Put the card back in my computer and did a clean install of windows 7x64. Experienced a crash right at the start of Furmark.
The only thing I could think of to change before sending the card back was putting it in another PCIe slot. I did and have successfully ran a Furmark.
I guess the question now is what would be causing the card to crash in the PCIe slot 1?