Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Maybe this is a really generic question but I found no answer, and Q6600 is a really popular CPU.

I've tried the HOWTOs on Google, all the stuff I could find.

However, once I set some higher FSB (can't set spread spectrum.. it won't let me), the PC won't boot, have to reset bios. I could set the CPU voltage to +0.125 ..but with only that, I'm at the same place just with more voltage.

Here is my mainboard

share|improve this question
What's processor stepping ? – Sathya Dec 12 '10 at 14:50
Stepping: G0 ... – Shiki Dec 17 '10 at 3:21
up vote 1 down vote accepted

If even the slightest overclocking does not work, maybe you have a buggy BIOS version.

On some boards you may need to disable SpeedStep to achieve stable overclocking (which unfortunately results in higher CPU temperature); however, my ABIT IP35 Pro does not have this problem ;)

Also try to decrease RAM frequency before trying to set higher FSB — increasing the FSB frequency without switching the FSB:RAM ratio may push RAM over its limit (especially if using some cheap RAM).

Overclocking Q6600 with a box cooler is also problematic due to overheating issues, but this usually results in instability under load, not in a completely unbootable system.

share|improve this answer
Thanks for the tip, I'll try to look around. It's got a Zalman CNPS9700 cooler on it, and its about 25-40C depending on the room temperature. Under load, 40-60C. – Shiki Dec 17 '10 at 3:21

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.