I tried and tried and tried to get the right setup as far as voltages but was never able to get a stable OC with what I did. Started with the vcore 1.40, all other settings, AUTO for 3.6, Orthos failed! went up to next voltage setting, failed! After many weeks, days, hours and many different combos of settings I said "F" it and just set voltages to AUTO and all is fine. Ran 4 hours Orthos and no failure, temps were after a while in the high 50- low 60 range but with my manual setting they were always high from the get go and would get to almost 70c. Idle temps for Auto is low-mid 30's, never could get that low even with my manual setting set lower than what vcore is now on Auto (1.42+/-.1 or 2)

Me confused!!! but happy I'm at 3.6, temps are low and oc is stable, for now

ps. Memory is linked (Auto)

Memory on AUTO is not linked, it sets the frequency it runs on relative to your FSB.. i.e: 667,800,1066 etc... Maybe you had the RAM on the wrong divider trying to run 3.6ghz? Because setting voltages manually and AUTO shouldnt make a difference if all else is equal..

Auto voltage on dram is what I meant, fsb is 450 so ram is 900mhz, I just set the voltages on Auto nothing else. I just thought it kinda weird that it worked and my temps are cool, like I said for vcore I went up and down with the settings and nothing worked, I tried all voltages on manual and i couldn't get it right, switched to Auto for all voltages and it works better then anything I tried setting up.

Usually works better for me setting manually... make sure AUTO on vdimm isnt overvolting RAM too much, If the Corsair Dominators carry Micron chips (Likely) prolonged use at over 24.vdimm will most likely kill them

Changed RAM voltages to 2.2 and got 5min into Orthos before failure, went back to my stable 3.2, runs way cooler down there anyways. Wish I could find the right setup but I don't think I can get much higher voltages without having a better cooling setup, 8700 Zalman is ok for mild oc but not 3.6, at least not with this MoBo, my evga could do it easily. It's strange how just 400mhz can make such a difference, my core temps @ 3.2 are in the high 20's-low 30's @ idle, load high 40's to low 50's. I only messed with the vcore, vdimm, and NB voltage settings trying to get 3.6
stable, nothing I did worked and things were getting a little hot when stressed. I've tried to look for oc'ing comparisons of my setup on here and other forums but haven't seen much of any, most have e6600-6700, e6850 or Q's.

Post up all the settings as they are in the BIOS... Is Transaction Booster turned off?

Transaction Booster is on AUTO?

The only thing that was disabled was Spread Spectrum

Everything else was on AUTO except for:

AI OC'ing- manual
CPU Ratio Cntl- manual
Ratio Cmos Settings 8
FSB Freq.- 450
DRAM Freq.- 900
DRAM Command Ratio- 2t
RAM Timings
5
5
5
15

I went up and down the voltage range for vcore and everything failed, with everything on AUTO it works and stays cool, I don't get it???

Try turning off Transaction Booster, all that does tho is increase the Performance level the RAM runs at on your board, but sometimes it can make a difference

I give that a try and get back to you, thanx.