The randomizer E6600 is definitely a curiosity. It seems to either have a different TJMax or someone didn't do a great job attaching the IHS to the cores. Have you tried using the OEM heatsink on it recently? If you ever get bored with it let me know and I'd probably buy it from you if the price was reasonable. I think rge and I could get the truth out of that CPU.

You better send it my way first though. rge seems to have a bad habit of venting the tops of his CPUs with a drill.