Normal
I also recently bought a 14 core xeon (e5-2683 v3) for simulations and render purposes and noticed the same thing. So after som digging, i stumbled upon this formum thread. where was explaned that intel nerfed these xeons to only turbo up to 3 ghz on one core, but some overclocker figured out a way to override the micro code and get them to all turbo boost to 3ghtz.