Well I have some good news and some bad news about the 4000+ chip
Yesterday it didn't act right.......I had the chiller fully cold, so the core was ~-10C.........would not boot windows set to 265x12 with any voltage and it boots that with 1.392v normally.
Today the chiller had not been run and the chip boots right up to 265x12, and with slight vcore increase 270x12. Also was able to reach the same 3532MHz with the same 1.856v as before. Increase to 1.888v and only clocks up to 3515MHz....just like before.
Wait a minute.......CBB between 0 and -10C???....with an AMD chip?? It would boot up and run, just not at quite as high settings. And it definitely would not clock nearly as high even with vcore.
Very strange if you ask me.