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post #1861 of 9641
Black,
Quote:
"I'm somewhat not surprised that you crash. Try not running ANY background processes while stress testing. I've found that I get a much higher failure rate if I do something else right along with stress test."

The core is crashing regardless because it;s been a ong time since I was able to OC it on a regular basis. So I'm working her back up again. I like to run other program behind Prime95 Blend mode, for one, because Blend only runs 90% of the Ram at most. FOr two, if I can't run Prime95 Blend AND other programs in the background at the sme time, then she's Not completely stable to me... JMO

Quote:
"Well it's not so much frequency that I'm worried about, although I would like it to be stable @ 1600 with 6-5-5-15-20-1T timings. But I'd even settle for 7-7-7-20(21)-28-1T."

Not trying to be pesamistic but more realistic. If you're running high OC's on everything (CPU, CPUNB and Ram) else, running tight timings as well is going to prove to be a great challenge if possible at all. (V) will need to be raised wuite a bit...

Quote:
"And to tell you quite honestly, I haven't installed any of the desktop OC software. Not even the overdrive thing. All of my OCing has been done through the BIOS. I guess I'm old school like that."
Rock on brother! Oldschool is the Only way! The Multistep OC Booster that I'm referring to is actually under the Cell Menu in the BIOS. It's below ACC and above the CO Dial Settings. Someone prove me if I'm wrong, but with these chips, one Can't boot into windows with Ram frequencies above 1697-1703Mhz. UNLESS one uses the Multistep OC Booster.

Step1 for the OC Booster will lower the BUS MHz (which will lower the Ram freq. as well) by 20Mhz until 45seconds after windows desktop has been available.

Step 2 will lower it even further. Down by 40Mhz in same manor. until 45 seconds after being in windws. I found this one to be unstable as jumping 40Mhz while in windows is kind of like being affected by EMI. So be careful with that one.

The only trick is remembering that you Must make sure that the settings you have made will be able to support the desired speeds for the CPU, CPUNB and Ram after the Booster has kicked in after 45 secs.....

Have fun with it.

Has anyone tried the MAX FSB setting?
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post #1862 of 9641
I just OC my motherboard for the first time to 3.8GHz. Haven't stress tested it yet. Those who have the same board says 1.40v might not be enough to run stable... So I'm looking for BSOD when I load the cpu.

Testing now...

Results> http://valid.canardpc.com/show_oc.php?id=829287

No BSODs

Load max temps were 52c
Edited by ToxicAdam - 11/15/09 at 10:47am
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post #1863 of 9641
Thread Starter 
From what I understand ACC is kind of clock skew wiki I have read that it either slows the core speed down by 2-12 percent or raises it 2-12%, at the same time I have read that the change is much less then that.
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post #1864 of 9641
Quote:
Originally Posted by eclipseaudio4 View Post
From what I understand ACC is kind of clock skew wiki I have read that it either slows the core speed down by 2-12 percent or raises it 2-12%, at the same time I have read that the change is much less then that.
So, a weak core should get negative numbers from the others, to 'slow' it down to a stable speed, right?

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post #1865 of 9641
Quote:
Originally Posted by mduclow View Post
So, a weak core should get negative numbers from the others, to 'slow' it down to a stable speed, right?

Marc
If it's clock skew that would make it faster. Positive clock skew should make it slower.
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post #1866 of 9641
Thread Starter 
Quote:
Originally Posted by mduclow View Post
So, a weak core should get negative numbers from the others, to 'slow' it down to a stable speed, right?

Marc
Quote:
Originally Posted by NCspecV81 View Post
If it's clock skew that would make it faster. Positive clock skew should make it slower.
And this is why I am not sure.... That bad thing is that AMD themselfs have only said that it will "loosen" the reigns a little for a higher OC
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post #1867 of 9641
Quote:
Originally Posted by NCspecV81 View Post
If it's clock skew that would make it faster. Positive clock skew should make it slower.
I got it. If I am unstable on core 3 at -2, -2, -2, -2 maybe taking the third core to 0 or +2, or more, might stabilize that o/c for me without needing to adjust the volts. Positive adjustment 'eases' up on the o/c for those cores being adjusted.

Is that what you're saying?

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post #1868 of 9641
Thread Starter 
Quote:
Originally Posted by mduclow View Post
I got it. If I am unstable on core 3 at -2, -2, -2, -2 maybe taking the third core to 0 or +2, or more, might stabilize that o/c for me without needing to adjust the volts. Positive adjustment 'eases' up on the o/c for those cores being adjusted.

Is that what you're saying?

Marc
That is correct if it is actually clock skew.
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post #1869 of 9641
From my experiences if i have a weak core or im not using enough voltage in prime 95 the computer screen will go black and then it will reset and in the POST i will get "A Hyper Transport Sync Flood error occurred on last boot".

I only get errors in prime95 when dealing with the CPU-NB which has nothing to do with the core itself really. So ACC isnt really the right tool to mess with unless you know for sure by disabling the cores, stressing each core to maybe find a weak one.
post #1870 of 9641
Okay, so if it is Clock skewing per core... Then this would be imlpying that "+" is "advancing"the frequency and "-" would be "Delaying" the frequency.

In Memory skewing, one would advance the DIMM channel to stablize and complete OC between the CPU and Ram because the ram signal wasn't reaching the CPU Fast enough. One would skew the Ram to Delay the signal to stablize and CPU and Ram OC because the Ram signal was reaching the CPU to fast....

Both scinarios above would cause instability if the memory was not skewed...

The Asus A8N32 Sli Deluxe that I'm running right now has the option in BIOS to skew both memory channels, separately.

That being said, When a core is "weak", are we implying that it needs a separte Advancement compared to the other cores to speed up it's processing to become in sync?

Or does "weak" mean that it's not matched very well or has a hard time synchronizing it's speed with the other cores? Whther it be a MS to fast or to slow? That must be it, given the option to Increase (or advance) the core speed if it's to slow or decrease (Or Delay) the cores speed if it's running a tad higher than the other cores....

I think that I just had an epiphany!!!! or should I say

"Great Scott!!!!!!????" LOL

See, this is exactly what I was talking about. Brain storming together is great. Call me a nerd......
Edited by Mastiffman - 11/15/09 at 2:49pm
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