This is because the new ATI cards all drop their clocks very low to save power and stay cool when they aren't used in 3D applications. The windows program to test your system doesn't increase the clocks to normal speeds.
If you went to unneccessary lenghts to cause them to run at normal clocks, you'll find a score of ~7.8.
You can confirm what I've said by opening up ATI Overdrive and watch the clocks stay at low speeds.
Why care about your WEI? You don't play it, what difference does it make? Test with REAL programs that you actually play. That's the best way to tell how your new card is working. (You don't use a program to set the clock speeds, it happens automatically when you launch a 3d program.)
RivaTuner and ATI Tools both allow you to change the clocks, but the downside is they will never drop down to the lower clocks to save energy and keep heat down. However, this is how I was able to score a 7.8.
msi afterburner works! Funny thing happened though. After taking out my ssd and reloading my os on a different drive, my wie went back up to 7.8. I'm gonna hold on to this card (for 30 days) and see if Fry's gets the 5970's in. They should have received a shippment on the 5th. So, they are waiting as well.