Quote Originally Posted by OVERK|LL View Post
I was/am having a similar issue with mine; it won't remain stable at 450x8 or 400x9. Looks like it's northbridge temp.

Funny part is, at 430x8, it's problem-free????? All voltages are can remain in the green and it's prime-stable without issue on both small FFT's and BLEND.
Who on earth promised to you that your Q6600 would be stable at 3600 MHz?? If it's stable at 3400, it doest mean it will go next +200 Mhz, even with vcore increase.