if at any time the camera in 3dmark turned around you would see the clipping, i would say not being able to see 3/4 of the environment a huge detrimental effect to IQ
The fact of the matter is that the cameras in 3dmark don't
get turned around. So NVIDIA is "optimizing" for this particular benchmark. It is certainly no secret that both NVIDIA and ATI optimize for this benchmark. Users of FX cards now get smoother and faster performance and better image quality in 3dmark03 in what we can
see. This whole issue is a matter of perspective.