Well, I finaly figured things out.
It look like the Vboost is in fact what is causing the vcore of my CPU to go up when it is under load. However I set the vcore to 1.42v in the BIOS and once in windows running prime95\\under load the Vboost makes the vcore go up to 1.55v / 1.56v. (which I might tweek lower later on)
I did however find out that my CPU is only stable until I reach 3.8Gz, or a multi of 19x, anything higher, such as 19.5x and it's unstable, EVEN if I push or lower the vcore voltage, it makes no difference. Its almost as if AMD or MSI set the max core multiplier at 19x, anything above is not stable... ???
I increased the Bus speed from 200Mhz to 205Mhz (3.9Ghs) and ran Prime95 for 45 minutes wihout any errors. Then I increased it to 210Mhz (4Ghz)... ran Prime for 5 minutes and got errors.
I'm assuming by increasing the BUS speed I will need to increaset the NB and CPU-NB voltage higher... can any one comment on the highest\\safest NB and CPU-NB voltage on my board? and if I will need to increase any other voltage regulator in the BIOS for this?
Once and if I increase hese settings should I watch the NB temps? I'm assuming these are the TMPIM0, TMPIM1 and TMPIM2 in HW monitor ?
My ram is rated 1600Mhz, its presently setup as 4/1 in ratio to the Bus speed, - 800/200Mhz, but I realize 205Mhz is pushing my RAM to almost 1700Mhz.. maybe this is causing issues?
Any idea's or suggestions?
I made it to 3.9Ghz... I'd like the 4Ghz mark if I can... Edited by thestef - 4/26/11 at 4:59pm