What you are asking is like "whats the best computer to use a computer on?" What you need to be asking is "what is the best computer to do specifically what I need to do with my animation pipeline"
what is your platform?
e.g. High Poly Animation, Physics Animation
what is your modeler?
e.g. C4D, MAYA, Blender, Sketchup?
what is your rendering engine?
e.g. Renderman, VRAY, Octane, Lux?
what is your pipeline?
e.g. "C4D to Mudbox to VRAY"
All the CPU's in the world are not going to help if you have a GPU rendering engine and all the GPU computing cores are not going to work if you don't have the VRAM to store your texture data or do you have a hybrid engine?
Turbo-boost is at best a sales pitch, it means nothing, it's a theoretical that "might" happen, not "will" happen and it's generally .1/.2 GHz. faster if it can sustain it.