XFX 8800 gts problems with gpu/memory clock

Hallo!

i have this new video card (just a week):

XFX GeForce 8800 GTS Alpha Dog Edition 512MB

Trying to see the information of my video card, using techpowerup, i see always that core clock and memory clock are not available (set to 0.00 - see images).

On the oder side, i don't have any problem with gaming or any other kind of application (for example crysis at high/very high level or hl2).

I've tried to reinstall, reboot, and to check the informations again, but always with the same results.

As OS i have vista ultimate 64bit sp1.

Do you know if it's an hardware or software (drivers...) problem? and how can i solve it?

Thanks for all!

 

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