Is that the bios settings you have for the Q9400@3.20GHz?
Whats the FSB you have it on?
An what is the vcore? When you have it on full load with prime95 have cpuz loaded when testing with p95 it will show if there is a vcore drop.
If there is a drop you might wanna do the pencil mod!
DO NOT go over the recommended voltage on that chip!
My FSB is set to 1600, so 400mhz in reality.
Vcore in BIOS is 1.4v. Vcore in CPU-Z shows 1.36v. I haven't checked the Vcore during max load. 1.36v is at idle.