...but now I think that I will. I am getting confused by some of the descriptions for temps. One time it is core/package temp we are referring to and then it is 60c water temp and I get lost in just what is how hot.
I am suspicious you are testing for inlet location in a manner not so likely to tell you what you want to know. Why?
Well the indications I get from seeing what is happening at 5.0Ghz is what I see when the Vcore is too low or the temp is too high. There is no stability. Some core fails. In most cpus that is usually a particular one first but not always and it swaps at times.
With the cpu so close or really not stable since it is dropping a core at 5.0Ghz, you need to drop back and get stable. Maybe 4.8/4.9Ghz or whichever. Then begin to change the entrance and exit modes into the block. You will know if you are better off if you can then lower the Vcore slightly and "still" be stable. Such a situation 'might' mean you are getting somewhere.
So far with the instability at hand, nothing you do is showing up as really better. You just seem to see a different core fail and that really may not point to anything. I can vary my Vcore enough when n0t stable to make a different core fail first.
Or there is another thing to consider and that is that changing the location of the inlet/outlet to the block makes no real difference. Or not enough temp difference that it can make a borderline not-stable processor suddenly stable.
RGone...