first time with ATI

Hi Guys

I am using Mobbility Radeon x1600... I tested a GLSL program, which uses

    1. 3D texture
    2. Simple Shaders (2.0)
    3. Clipping planes
    4. Multitexturing

and, it is really slow (1 frame "PER MINUTE").

I am wondering, how could it be possible?... I tested the same code over 
fx5200, and at least it gives 1 frame PER SECOND. I tried it over fx6800, 
and it gives about 25 fps. I installed latest catalyst (SP32497.exe), and 
even I tried with catalyst 6.4... but still, the same amazing speed.

I do not undestand the reason... it is supposed x1600 is good...
Any clue?

Thanks again guys
RIX

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