[QUOTE=MadDias;3568397]itīs not trial and error here.. even unplugging the psu and waiting a few seconds doesnīt change it. what do u mean with "voltage jacked up high"? i mean acc is of no use if i have to use stock volts to enable it.
what is an extra 450mhz? 3450mhz? or 3600mhz+450mhz?

A few seconds doesn't cut it, you have to turn it off long enough for the power LED on the board to actually go out. What i mean by "having the voltage jacked up" is doing something like booting at stock clock with over 1.55v. Actually a reliable source has told me that anything over 1.475 is going to be more likely to cause instability if clock is below 4ghz, 4.1ghz - 4.2ghz require between 1.525 and 1.55 AT THE MOST for complete stabilitly, but also requires a mid to high end heatsink.

Phenom II's are optimized for overclocking, so they don't REQUIRE that ACC is enabled to clock high. This is why all the PII chips and AM2+ motherboards have TDP ratings of 125-140w with stock voltage at 1.35 when the chip consumes closer to 60w. Most have no problem running stock speed at 1.2v, and can hit 3.5ghz - 3.7ghz without having to raise cpu voltage. It was really quite genuis to overshoot the TDP, they gave Intel the impression that they hadn't accomplished much in the way of improvements to either IPC or power consumption, while also requiring motherboard manufacturers to produce low price main stream boards that had would allow even people who never thought of overclocking to do nothing more then increase the multiplier without great potential for frying thier motherboard. A 4ghz clocked PII consumes between 100w and 115wl at 1.45v.

The main benifit i've seen for ACC is allowing for easy undervolting at stock speeds, and squeezing out higher clocks past 3.9ghz - 4.1. Could hit 4.1 without ACC at 1.4375 or so, but nothing beyond. After using downcore feature to run through each core individually with all 13 ACC settings and bumping voltage up in .0125 incriments, i was able to boot just shy of 4.6ghz at 1.5475, the weak link being the PWM's in 790GX board overheating, chip staying under 50c with a duOorb in 24c ambient.

Quote Originally Posted by Daveburt714 View Post
Does anyone else have AOD crash their system (just opening it) when CPU core is set higher than 1.45v's in bios?

Guess I'll look for that AOD.ini mod to allow 1.55v's in AOD even though it killed my MSI DKA790GX...

I'm pretty sure this Asus has a much beefier PWM section than the MSI did..
I've had that issue only when AOD settings had reverted to novice mode, or preferances were set to load last settings logged when AOD starts after crash...or some such.

1.55 shouldn't be an issue so long as your case has good airflow, have run 1.7 on Asus 790GX when trying to push past 5ghz with no problem. Though i will say for anyone using a GX board,

DISABLE THE IGP IN THE BIOS

it causes serious instability when voltage's and NB/HT speeds are increased just in how everything communicates, but also makes for looootsss more heat.

Quote Originally Posted by demonkevy666 View Post
I'm at 3.75ghz at 1.55 volts. Idle is much lower then the last time I tried this with multiplier.
42C last time was like 50C...
That is hot.

These chips run very very cool. Which heatsink are you using again? I'll take the odds on a heatpipe cooler of some sort. Heatpipe's are great, and can really give some serious cooling...

however

heatpipes work by evaporating liquid that travels UP the HP, being cooled by the fins until it returns to it's original state and starts the process over again.

Great idea, very effective...unless you have a tower case....meaning the heatpipes will be horizontal to the cpu surface preventing that liquid from coming in contact with the cpu....because heat, and things like evaporating liquid vapors travel vertically....not to the right. I'm sure many people realize this, and think it to obvious to bother mentioning...which makes me think it the possible cause of all these toasty Denebs.