I finished the tests with E6600 step4.
For the moment, I prefer not to exceed 1.8v
I have, with ClockGen (thank you Franck) still which been able to increase the frequency a little but which not been able to validate !
http://users.skynet.be/fb331210/4347.jpg
And I believe that with a better cooling of the CPU and chipset, I will have been able to validate them.
Here, just a photograph of the screen :D
http://users.skynet.be/fb331210/4387.jpg
Now... E6700 step5 :D