This is for a slightly different motherboard but I got some insights from it:
http://downloadmirror.intel.com/1948...ingGuide01.pdf
Start reading from section 3.5.
Before doing any overclocking, make sure your BIOS is at the latest revision - I think the latest TWO revisions are good while the older ones can't overclock properly.
Essentially you go into BIOS and select the "Performance" tab. You answer "yes" the disclaimer and then go to the "Processor Override" section of the tab. (I haven't had any luck with my RAM so I did not overclock it.)
Unlike the DP67BG in the guide, the DP67DE does not have a vdroop control so there's nothing to do about that. Instead you look at the other settings:
- Set CPU voltage override to "Static"
- Set a low CPU core voltage (using 1.1625V for my overclock)
- Increase all the current and watts limit of the turbo boost: set these as high as you want, the motherboard will downclock before it burns
- Raise the turbo ratio limits
Unlike the other boards I've dealt with, when overclocking with this one, you have to look at two things when you're testing stability. First is of course whether your stability check / OS crashes, and second is
whether your CPU has returned to default clocks during the stability test. If the second occurs, you need to lower either the sustained turbo boost watts or your voltage. Keep a CPU-Z window open while you run stability tests to see if this is happening.