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Reply by sam on April 1, 2009 at 1:32 pm

I believe the water uses some Pixel Shader instructions that are not available in some older Pixel Shader 2.0 cards (so it may be that it is relying on PixelShader 3.0 features).

My own card (GeForce 8800 GTS) works fine.

These cards could run the simulator after a driver update (so there original drivers don't support it, but more recent ones did):
Intel X3100 / GMA 965
Intel GMA 950
nVidia GeForce 6800

These cards do not work at all, despite Pixel Shader2.0 compliance:
nVidia GeForce 6150 SE
nVidia GeForce FX Go5200 (probably PS2 compliant as part of the 5 series, but some information indicates it may not have been).
Intel 910GL/915G
Veo 1.0 Online Class