DFI 680i LT Quad Core overclocking

[jonbass]

EDIT: I was too slow ,
Great, it seems like you found the problem , this mobo is a tricka piece but like i said when you find the right settings this mobo rocks.



First i would say that your Northbridge voltage is a bit too high, also the GTL ref voltage seem high and when you give more voltage on the GTL ref you will get an unstable system.
I also noticed that my QX6850 is harder than my QX6700 to get stable, and this probably have something to do with BIOS, i think that the next release from DFI will be better for 1333 quad core CPU´s, or at least i hope so.
Now i don’t have any big problems like you describes, but hopefully its just some wrong setting causing al your troubles.

By the way, do you have clockgen for 680i motherboards, and memset? They can really help when raising the FSB.

I would suggest you to use 170-95-95 GTL ref and CPU VTT 1.6v, the Northbridge around 1.6v and good cooling on the Northbridge, place a good fan on the stock cooler. Also place a fan that blows directly at the PWM area only, this can really help with stability, also raise the SB voltage to 1.56-1.6v
Also try CPU Drive Strength both weak and strong, It is very different from CPU to CPU if drive strength weak or strong is better, so try and se what happens.I would also suggest you to try strong for your memory’s and se if it does any difference.

When getting really high FSB try both unlinked and linked mode, try sync and see if that gives any better stability. Also your memory settings try to set them manually.

I hope that you can find the best settings for your CPU and get the mobo to work, keep posting the progress and i will try as good as i can to give you advice.
But right now i would say that GTL ref can be the problem, like i said earlier, try 170-95-95 CPU VTT 1.6 and northbridge 1.6, and use good cooling.

Good luck.