Dumo,
Can you do me a favor and tell me the default VID (at x34) for both cpu's?
I want to see if the VID relates to the voltages you are using at the max overclocks...

And another random question:
Does the lower VID chip run hotter than the higher VID chip (if the voltages are the same fixed voltage)?
(you can just test that right in the bios with both chips at 1.25v fixed).