Using Advanced Clock Calibration (ACC) to increase Phenom ii overclock - Page 2

^ Someone has to look like an ******* before people start reading the posts.

I understand completely about VRMs. That's why I have a VRM heatsink, and 2 temperature diodes onto the 2 hottest phases. That's why I am making sure my VRMs stay under 85*C, and it's why I'm currently testing overclock set-ups where my VRMs are staying at 65*C on average after hours of prime95 and only maxing at 72*C.

What do motherboards have to do with max overclock limits?

This isn't even the question that's being asked.

The OP is asking and trying to start a discussion about Advanced Clock Calibration on Phenom II x4 overclocks.

prime95 has run for 7 hours on ACC enabled 3.7ghz@1.488vcore (50-53*C cpu core temp, 65*C VRAM temp). It appears to me that ACC helps increase phenom ii overclockability, but I'm not sure, because most of my prime95 fails have been at 5+ hours (making me think temps are my major stability issue), making me think it's giving me at least 200+ mhz.

So has anyone used ACC to help an overclock on a phenom ii?

The difference in motherboards, as I understand it, are:

- The holes fit
- Chipset (basically, ability to overclock, ie tweak cpu settings, and SLI, the former which is on even the cheapest motherboards that are sold by themselves, the latter necessary in most builds and to most people and irrelevant to overclocking).
- VRMs , which is a huge deal, but you can see in my sig, post history, etc, that this is not an issue for me (i have a heatsink and 40mm fan specifically mounted on my VRMs, as well as 2 discrete temperature diodes that let me know that I never even cross 70*C even at the highest of vcores)

Thanks, but your post is condescending and irrelevant. Next time just post "No, I am completely inexperienced with ACC and am not knowledgeable on the subject"

On a side note, I found out what was holding me back, it was the IMC. Still doing some testing but basically ram clock is an issue in stability, as in 24 hour prime95 stability (it's not an issue if I'm okay with 8 hours or less of prime95, or IBT).

What I want to hear, is people's experiences with ACC with phenom ii or am3 chips, regardless of the results. There seems to be a little bit of information on ACC being relevant, but it's not quite clear, and most of it is just user-experiences. I figured the biggest overclock forum would have a few people who have experience with it.

From what I've gathered so far, it helps in increasing overclocks/stability at the very edge, and only in certain chips, which have imbalanced cores. The best I've read is that it changes certain values in the system code to make what would normally be manifested as unstable, as acceptable, as opposed to changing voltages, frequences, et cetera. So I don't even know if it results in a true overclock, and how you would even go about setting it.

I'm still working on my prime95 24 hour stable overclock, when i figure it out, I'll see if I can squeeze more out using ACC. I've already gotten 24 hours on 3.6ghz though, so that's well within the 3.6-3.8ghz range people say phenom x4 c2's get.

I don't know what qualifies as 'experienced' when it comes to overclocking, but this is not my first time overclocking. As smart as you are, you have no clue what ACC is either. Looks to me your just as stupid as me and everyone else on this one.
Edited by Belial - 11/16/12 at 9:04pm

Yes, I'm aware of quality of power given. I know it's hard for you to understand, but I've read all the same articles that you have too.

Please leave troll. Your total lack of knowledge on ACC is evident, thanks for your input.

And people have used ACC to overclock Phenom II's. As shown in the OP, AMD's tech has stated ACC is useful for some Phenom II cores, and some people have used it with success. It's just hard to find specifics on it because AMD has no official information on it.

It's a very simple discussion question. Has anyone ever used ACC to influence an overclock on a Phenom ii?

It's a very simple yes/no. Has nothing to do with my system or my results. Your incredibly obnoxious. It's not hard to read, and you clearly have a problem, so please, keep it out of this thread and PM me if you really must tell me something that doesnt make any sense. And I'm getting under 60*C load VRMs, and getting 24 hour stable on 3.7ghz, so clearly, my motherboard is not the issue. Not that I was even asking for help on my specific overclock anyways.