Thank you, I appreciate the help!
Okay Terrace, I ran CPU Z with the motherboard defaults and windows ( windows 10) set on balanced power options (that is the default when it's installed). Memory settings stock (Auto, no XMP) and CPU Z on the CPU tab.
It showed my clocks (core #0) jumping between 1599 and 3500. Most of the time at 3500 then dropping to 1599 That's pretty normal for it to be low and spike because of all the crap it's running behind the scenes.
Changed to XMP 1 and the BCLK/PEK 100 and turbo setting changed to manual, same as you. Still same windows power settings. CPU Z then showed it still hopping around same as before, just a lil slower, or longer at each extreme to put it another way.
Went into bios and changed the TURBO setting to AUTO and rebooted. CPU Z now shows that it spends most of it's time at 1599, but when I run an app it still goes up to 3500 or so as needed.
So I am gathering from looking that XMP shouldn't really affect your power saving states (p states) for your CPU. THey shouldn't in theory either as 333 mhz to 400 on your memory bus shouldn't really cause any problems or need special settings with even cheap ram.
Either a bug or something else had to get changed in your settings I think. Your CPU should still act like before unless there is some change in haswell or broadwell that IDK about as far as the power delivery on chip.