GPU-Z odd

[eeeeeeeeeeeeee]

I got a new Asus Radeon HD 4850, and the clock speeds are showing up properly in ATI's overdrive in CCC. However, GPU-Z reports a super high GPU clock for some reason, and just says "ATI Radeon HD 4800 series" generically.

Is there something wrong with my system? (Catalyst 8.9, Vista Home Basic Sp1)

http://img206.imageshack.us/img206/5685/gpuzzt5.png