Hello guys, I got a strange problem with my E8600 /VID 1.25/ on RE mobo
- at frequency of 4 ghz /500x8/ it runs perfectly at 1.25 vcore and with every other voltages set to min /vtt 1.1, nb 1.25, sb 1.5, pll 1.5/ + all gtl refs set to -40
- at frequency of 4.25 ghz /500x8.5/ it runs perfectly at 1.35 vcore and with other voltgages set also to min

The problem is, that I canīt run it stable at frequency 4,5 + ghz. When i try to load at 500x9 or 450x10 at 1.45 vcore or more, I can run small ffts without any problem for hours and hours... strange thing is that I cant even run large ffts - everytime I run it I got the freeze of the system in max of 30 secs. I tried to tune every single voltage, refs, skews a so no, but with no luck, even more vcore didn't help. I also run memtest whith no problems.

Any suggestions guys?