Quote Originally Posted by jas420221 View Post
Hmm i am sure others in here can help you, but i only have Q6600 at 3.6ghz right now .... 4,0ghz on Q9450 is capable, but not all will do so and do so 100% stable.

As for what Volst and such i can't say for sure, but ppl in this thread and forum and other threads in this forum have done so... maybe to a quick search through the forum for Q9450 Overclocking and see what you find.