What's the characteristics of a "bad" Q6600 with G0 stepping? Is it a higher VID? I've had mine for a year now and it's VID is 1.2750v but I run 3.0Ghz stable at 1.232v :shrug:
I keep hearing references that at some point in the last six months ago another batch came out that was sub-par but I've not found anything concrete listing what or why...
Some of the newer ones hit a wall at 3.2-3.4ghz and require loads of voltage to go further.
Your CPU is hardly overclocked tbh, it's a shame not to push it MUCH farther!