"Procedural textures eat up processor time." This should only be a concern if you have an old machine with relatively small CPU. Even the most complex procedurals (excluding those with raytraced material nodes) should only take a fraction of extra time for a decent Pentium 4 or AMD to crunch out, plus they're resolution independant. I honestly don't see very much difference in rendertime, for instance, when applying Face_off's complex skin shaders to a texture, as opposed to rendering the same scene without it. At least it's not perceivable to me.

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Tools :  3dsmax 2015, Daz Studio 4.6, PoserPro 2012, Blender v2.74

System: Pentium QuadCore i7, under Win 8, GeForce GTX 780 / 2GB GPU.