Except for when you have to update the microcode due to bugs that freeze your system under certain loads. Or when certain calculations are incorrect and you cou

Except for when you have to update the microcode due to bugs that freeze your system under certain loads. Or when certain calculations are incorrect and you could NOT maintain it and the whole CPU range had to be recalled http://arstechnica.com/gadgets/2016/01/intel-skylake-bug-causes-pcs-to-freeze-during-complex-workloads/ http://arstechnica.com/gadgets/2016/01/intel-skylake-bug-cau... https://en.wikipedia.org/wiki/Pentium_FDIV_bug https://en.wikipedia.org/wiki/Pentium_FDIV_bug