Possible Duplicate:
How much more efficient are power-of-two textures?
Old video cards support only power of two textures in OpenGL. In new hardware where non-power of two texures are supported, using power of two textures will be faster than NPOT?
Possible Duplicate:
How much more efficient are power-of-two textures?
Old video cards support only power of two textures in OpenGL. In new hardware where non-power of two texures are supported, using power of two textures will be faster than NPOT?