Overclocking help with my E6750

I'd like to help, but unfortunately this is all I'm able to offer. But let's get the ball rolling!

What you're seeing is a combination of vdrop and vdroop. Vdrop is first because that's when the voltage is lower than what you set it to in the BIOS. But vdroop is when the voltage droops under load. So, when it's idling, the voltage is a little bit higher.

If you have Load Line Calibration, or LLC, then turn that on. However, this may or may not make the voltage spike. But in most cases, it can help with vdroop. So, experiment with it and see what your results are.

As for setting the voltage in BIOS to 1.5v: believe it or not, that's safe. The actual voltage running through the chip is 1.432v at full load, and it's safe for long-term use as long as your temps aren't getting too high at full load. I say that with this voltage being as high as it is, try to keep the full load under 70 to 75°C, and everything should be 100% safe for long-term usage.

Also, if you want a better GUI but the same stress test, then give Orthos a try. It's Prime95 with a different GUI and it lacks all of the features that have nothing to do with overclockers. Plus, it's much more obvious when it fails (especially from a distance).

That's as much as I know right now. I hope that this is a good start.

You're welcome!

67°C with this voltage is pretty good and plenty cool. Anyway, believe it or not, it's not 1.5V. Instead its 1.432V. You can also consider the voltage to be whatever it is at idle which is only after vdrop, but not after vdroop.

But, experiment with LLC. It may allow you to lower the voltage because once there's load on the CPU, LLC will "calibrate" and raise the voltage. But again: experiment because some have seen the voltage go up to values that they didn't like seeing. This may (or may not) give you the ability to have a lower idle voltage than you'd get at full load. Or it may eliminate vdroop altogether, and then the voltage would never change upon CPU load.

As for the other voltages, I'm not 100% sure concerning these newer boards. I don't have a FSB "termination". But, until somebody more helpful comes along, I say play with it a little bit and see what happens. It can't hurt if you only make small adjustments for now.

Quote:
When you get above 400FSB, as you are now, generally you will have to increase NB and sometimes FSB Term voltages. I would try setting your NB to 1.4v-1.45v and your FSB term to 1.5.-1.55v.

Those voltage are perfectly within spec for your CPU and mobo and shouldn't fry anything.