Positive experience with ACC on Phenom II

[chew*]

No I don't expect you to drop a name, but unless AMD gives out info in public clearly stating ACC isn't working A link from a trustworthy website with a "anonymous" source from AMD would be enough for me.

Also that the new BIOSes doesn't allow people to activate the 4th Core, is because AMD kindly requested all motherboard manufacturers to make this change to ACC, cause they didn't like the idea of people buying X3's and unlocking them, I thaught everyone knew about this? So no it doesn't tell me something in itself.

And you said it yourself you have no idea what the AM3 manufacturers are doing implementing ACC.

And as we can see ACC is working for this guy, he does gain stability from it, hes clock was unstable until he used ACC.

OK it works for 2 people that we have accounts of.... does acc do anything for you? try it

[Smartidiot89]

OK it works for 2 people that we have accounts of.... does acc do anything for you? try it

ACC is still a marketing thing, and you seriously think everyone reports it when it works, and you think that every single overclocker in the entire world sits here on XS?

Seriously an "anomaly" that makes ACC work for Phenom II doesn't make any sense whatsoever.

Show me something to prove me wrong and I will shut my mouth promise.

[chew*]

I'm not the one that has to prove anything, your backing up other reports that it helps with no supporting results of your own.......

to conduct or start a theory you need to test a large group of cpu's I would be interested to hear matts take on this once again when he gets a AM3 chip.

I have tested with lets see.......I have 9 PH II chips here and out of 9 chips it made 9 chips less stable on 3 diff motherboards........and unlocked two.

Don't know what else to say......I have tried and have not been able to duplicate it.

Matts results are indeed interesting, but with what I have here I still have yet to duplicate it, I have the same board and bios so thats not the issue........

Remember there are always the anomalies or chips that break the rules just like with the batch theories........theres always a few that are an exception to the rule......I have one chip that refuses to post at 1.6vcore on air no matter how cold the air is (0C ambients) all my other chips can boot fine above 1.7v.............but get it colder and its fine and acts like the other chips

[Smartidiot89]

Phenom II is nothing but a remake of Phenom, wich ACC officially was implemented on. It's not entirely impossible some remnants of the ACC functions caried over to Phenom II, and I think Matts proved that in some cases, ACC makes a difference.

And yes I will try it on my motherboard when I have the time, but I won't say ACC is useless because I myself can duplicate what someone else has accomplished.

[chew*]

Phenom II is nothing but a remake of Phenom, wich ACC officially was implemented on. It's not entirely impossible some remnants of the ACC functions caried over to Phenom II, and I think Matts proved that in some cases, ACC makes a difference.

And yes I will try it on my motherboard when I have the time, but I won't say ACC is useless because I myself can duplicate what someone else has accomplished.

Sorry wasn't aware you were in on the design team of phemon II to make that claim.....my source however was.....Not going to argue this though as this is pointless and i'm beating a dead horse......this is why I dont bother sharing information.....

[Smartidiot89]

Sorry wasn't aware you were in on the design team of phemon II to make that claim.....my source however was.....Not going to argue this though as this is pointless and i'm beating a dead horse......this is why I dont bother sharing information.....

No I am not, but ACC has worked for Phenom II so what are you going on about, I am just coming up with a theory as to why thats all and sources claim that Phenom II is based upon Phenom so it makes total sense to me why it works in rare cases

Also ACC doesn't only change voltage, it does lots of things to the CPU, like others has mentioned in this thread

[chew*]

No I am not, but ACC has worked for Phenom II so what are you going on about, I am just coming up with a theory as to why thats all and sources claim that Phenom II is based upon Phenom so it makes total sense to me why it works in rare cases

Also ACC doesn't only change voltage, it does lots of things to the CPU, like others has mentioned in this thread

Phenom II is a totally diff animal.......if not it would have the same cold bug.....IIRC ACC's original purpose was to attain higher clocks on PH 1 not make clocks stable....so far no one is getting "Higher clocks" they are just getting stable which brings me back to the point that those finding it to work are just missing certain settings or not setting them "just right"

[mattkosem]

so far no one is getting "Higher clocks" they are just getting stable which brings me back to the point that those finding it to work are just missing certain settings or not setting them "just right"

I'm a little thrown off by this chew. It's not a fine tuning issue that is corrected by ACC on this chip. As I mentioned, the system instantly reboots at higher clocks without it. I am definitely getting higher clocks with it enabled.

Example: 3.8Ghz

I cannot boot into windows at this clock without ACC enabled on at least the last two cores. It BSODs on startup. If I set the clock to 3.8 in Windows with ACC disabled, it reboots instantly. +2% on the last cores allows me to get into windows at that clock, but it fails prime, spi, etc. +%2 on the first two and +4% on the last two brings me stable at 3.8.

--Matt

[demonkevy666]

ACC is a PLL used in the south bridge because the original phenom PLL didn't work properly on die. When ACC is enforced is uses this PLL off the chip to control the clock better a side effect is it can rise volts of the chip on load. CPU vdda is the PLL voltage.
phenom II is design with straining and immersion lithography it's more accurately designed now

[Lastviking]

Phenom II 940BE and Dfi 790FXB tested all ACC setting... +12 to -12(All cores and per core)... Most stabilty is ACC Disabled for me +- ACC = Blue screen more early.

[G0ldBr1ck]

A new thread for testing and results like /\ could be quite informative if others would be willing to test it also.

[shaolin95]

In any case I take it that any + means higher OC chance and any -% means a more agressive setting right?

[chew*]

In any case I take it that any + means higher OC chance and any -% means a more agressive setting right?

No it was/is chips dependant.