3D Texture Interpolation

The industrial application I am currently developing requires a 3D texture and quite a large amount of memory. The texture size is something like 512x512x16. Is there any graphics card that interpolates textures(particularly in the z dimension where I have a poor resolution) ?

I found the solution and it’s quite simple:
use GL_LINEAR instead of the default GL_NEAREST as a texture interpolation parameter. Sorry to have posted the question. the app works fine now but requires even more memory, and Sun 3D cards are not particularly cheap I may add

Originally posted by FBailly:
The industrial application I am currently developing requires a 3D texture and quite a large amount of memory. The texture size is something like 512x512x16. Is there any graphics card that interpolates textures(particularly in the z dimension where I have a poor resolution) ?