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>>The Official ASUS P8P67/P8Z68 & P8Z68/GEN3 Series Owners Club>> - Page 253

post #2521 of 9370
Quote:
Originally Posted by tlovhak View Post
I think I have made some progress for my 4.5ghz Offset stable oc

Setting:

Loadline: ultra
phase C: extreme
duty C: extreme
cpu capabillity: 120%
Offset sign : -
Offset: 0.040


Vcore stay at 1.312 - 1.328 running blend test (Solid?)
Lowest temp : 57d
highest: 67d ( I still think there is something wrong with my nh-d14, will have to re-apply it if I want to go further )
Now running the 1344KB 15minutes test will do the 1792KB - 1792KB 6000mb if if it passed.
post #2522 of 9370
Both test passed EZ , so according to turrican9 I have at least 12hours prime95 stability.
What's is my next move ?


Find the lowest vcore possible for 4.5ghz? or Re-install my nh-d14 and move on to 4.7ghz ?
post #2523 of 9370
Quote:
Originally Posted by tlovhak View Post
Both test passed EZ , so according to turrican9 I have at least 12hours prime95 stability.
What's is my next move ?


Find the lowest vcore possible for 4.5ghz? or Re-install my nh-d14 and move on to 4.7ghz ?
I would try a 12h+ blend test just to make sure turrican9's method also works for you. I'm also going to do a 12h+ blend test to see if it works for me.
post #2524 of 9370
Quote:
Originally Posted by nawon72 View Post
I would try a 12h+ blend test just to make sure turrican9's method also works for you. I'm also going to do a 12h+ blend test to see if it works for me.
What is your current setting for "CPU Current Capability"?
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post #2525 of 9370
Quote:
Originally Posted by TwoCables View Post
nawon72: what is your setting for "CPU Current Capability"? If it isn't at 140%, then set it there now.
It was at 140%. Anyways look below for two exciting new discoveries(for me anyways).

C3 and C6 - What do they do
Quote:
Originally Posted by nawon72 View Post
I can't seem to get the By Per Core BIOS setting to work. I think i tried everything:

Link to pic.

Any ideas? I had C3/C6 disabled for testing so i could boot with the higher multis. But i left my OC settings the same(almost the same as TwoCables). Im gonna test the "Current" OC with C3/C6 enabled, and see if it makes a difference. Ill provide an update in 45min since i need to eat now.
I have done so more tests, and this is what i found......

Disabling C3 and C6 also disables the By Per Core setting .
Disabling C3 and C6 causes your Vcore to be significantly higher than normal when under light load n' .

Now are there enough reasons to use my method(look below)?
Quote:
Originally Posted by nawon72 View Post
Quote:
Quote:
Originally Posted by turrican9 View Post
also, on later than 1606 bios (1704 and 1850) c3/c6 can/will often cause idle bsod's when overclocking and offset vcore is used.
I believe i found another way to stop the idle bsod without disabling c3, c6, or using manual voltage. I changed my llc from ultra high to high, and set the offset to 0.095(0.090 seems to bsod). Ive been using this for the last two days, and i havent got an idle bsod yet. Im not sure if this oc is stable, but it ran crysis 2 dx11 maxed for 12h no problem.
Update: I left my computer on over night(10h) without any programs running, and i didn't BSOD. So for me, this is another possible option for stopping the idle BSOD. turrican9, if your could test this out yourself and confirm this method works for you, then i think we have a winner. And if anyone else can help me confirm that it works, it would be appreciated.
I still haven't had an idle BSOD by using my method with 48x multi. But this does not necessarily mean it will work for you. So i recommend you try it, and if you still idle BSOD even when your 12h+ blend stable, then im afraid it doesn't work for you. If that happens, let me know and ill try to find a workaround.

Theories:

Idle BSODs are caused when the CPU Turbo ramps up on one core, but isn't supplied enough voltage to maintain stability because C3 and C6 are "taking it away". As you can see in the supplied screenshots, when C3 and C6 are disabled, you get a much higher Vcore that doesn't fluctuate much.

PS - If anyone can ask an ASUS rep how C3 and C6 work, then we will have a definitive answer.
Edited by nawon72 - 7/26/11 at 11:56pm
post #2526 of 9370
Quote:
Originally Posted by TooManyToys NotEnoughTime View Post
Hi All. I was hoping to tap all this expertise

I was planning on joining the club this weekend but I have run into a problem with my new P8Z68-Pro/2600k rig. I started testing for basic stability at stock timings and I am getting a slowdown / lock-up after about an hour of running Prime95 on blend. I see one or more of:

- mouse starts to stutter step or stops moving altogether.
- one or more programs (usually Core Temp or Real Temp) show 'program not responding' in the title bar.
- one of prime95's worker threads stops updating its log.
- trying to drag a window around the desktop is slow / stutters.
- Windows sometimes locks up altogether. Other times I can force a shutdown (no bsod though).

I've tried removing as many variables from my testing as possible.

- I swapped out my wireless KB and mouse for wired ones that I know work.
- I pulled the 2 gtx-580's and am using the on-board graphics.
- I pulled out my 4 x 4GB Vengeance and tried testing with just one stick in the A2 slot as Asus recommends. I tested 2 of the 4 sticks with the same problem.

I have a feeling it is RMA time but wanted to see if these symptoms sounded like something other than a bad mobo / cpu. Thanks.
It appears to me that you have a problem with your SSD. Update your OCZ Vertex3 Firmware to ver. 2.09 and your problem could be solved. I had exactly the same Issue. Also it would be best running the latest Intel sata drivers.
If this does not help, then you could try to disable LPM for your drives.

Quote from an Intel Guide to disable LPM:

Link Power Management with Intel® Rapid Storage Technology

Intel® Rapid Storage Technology implements the Link power management (LPM) feature described by the Serial ATA specification to overcome the power demand of a high-speed serial interface, SATA and providing the capability of SATA at the minimum power cost. LPM, when used in conjunction with a SATA hard drive that supports this feature, enables lower power consumption. LPM was initially enabled by default on mobile platforms starting with ICH6M with Intel® Matrix Storage Manager. Starting with ICH9R this feature has also been supported on desktop platforms with Intel® Matrix Storage Manager 7.5 release but not enabled by default. Beginning with the Intel® Rapid Storage Technology 10.0 release, LPM support is enabled by default on both mobile and desktop platforms. OEM’s who wish to modify the default settings for LPM on their platforms can follow the instructions in the following section(s).

Instructions to disable/enable LPM

After system is setup with OS and Intel® Rapid Storage Technology installed, follow the below instructions to modify the default LPM support.

NOTE: Beginning with the Intel® Rapid Storage Technology 10.0 release, the registry keys are no longer populated in the Windows registry by default. The RST driver does not require the registry keys to be present to support the default settings.

1. Go to Start->Run
2. Type in RegEdit and hit the Enter Key.
3. Go to the below mentioned location to insert or configure the registry keys for LPM
NOTE: OEM’s need to configure the LPM settings by port. Ports are numbered starting with zero (please refer the desired platform EDS for the number of ports supported on that platform)

HKEY_LOCAL_MACHINE\\System\\CurrentControlSet\\Ser vic es\\iaStor\\Parameters\\Port0\\
HKEY_LOCAL_MACHINE\\System\\CurrentControlSet\\Ser vic es\\iaStor\\Parameters\\Port1\\

HKEY_LOCAL_MACHINE\\System\\CurrentControlSet\\Ser vic es\\iaStor\\Parameters\\Port5\\

4. Now add the following registry keys under the registry location mentioned in step3, if they are not available (These registry keys are not available by default, they can be added by using utomated scripts, .reg files, executable utilities, etc). If you find the below registry keys already available, you can modify the values for desired support. Values are modified on a port by port basis so modify all ports that you wish the changes to be supported on. **

“LPM”=dword: 00000001 {dword: 00000000->Disable; dword: 00000001->Enable} [default = Enabled]
“LPMSTATE”=dword: 00000000 {dword: 00000000->Partial; dword: 00000001->Slumber} [default = Disabled] (Note: the driver ignores this key when the LPM key’svalue is not set to 1. So when LPM value is 0, this value is N/A.)
“LPMDSTATE”=dword: 00000001 {dword: 00000000->Partial; dword: 00000001->Slumber} [default = Enabled]
“DIPM”=dword: 00000001 {dword: 00000000->Disable; dword: 00000001->Enable} [default = Enabled]

**Warning: If you edit the registry incorrectly, you can cause serious problems that may require you to reinstall your operating system. Intel does not guarantee that problems that are caused by editing the Registry incorrectly can be resolved.


At the bottom of the first post on this page there are linked 2 reg files, which will do this for you. (I know the page is german, but the files will do for sure):
http://www.hardwareluxx.de/community...en-793649.html

I thought, this might be caused by my overclock, too. Sometimes I got a bsod, rebooted and the ssd wasnt found by the bios until a complete cold boot. That's how I got onto the right trail.
Edited by slimex - 7/27/11 at 12:54am
     
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post #2527 of 9370
I just noticed this:
Quote:
CPU Spread Spectrum: Modulates the processor clock to reduce radiated noise emissions. Disable if overclocking, as clock modulation will increase instability.
Link

Didn't someone here say to set it to enabled for increased stability or something? I had it on Auto before i heard that, and now it's disabled.
post #2528 of 9370

Something is definitely wrong.
I have BSODs every time I start to fold.
The PC is stock for more than 2 weeks (BIOS defaults) and it's crashing and pretty often and that starts to get on my nerves.
I know something's wrong with it.

This is one of BSOD I get. There's also been an 01e and 07e BSOD
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post #2529 of 9370
Quote:
Originally Posted by turrican9 View Post
Tried to disable HT in your 2600K? Also try to Disable Internal PLL Overvoltage.

Also, make sure you try the latest bios for your mobo.
With HT and Overvoltage disabled, I was able to run blend for 3 hours without a hitch. I'm going to try flipping HT back on and see where that gets me.
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post #2530 of 9370
Quote:
Originally Posted by nawon72 View Post
I just noticed this:
Link

Didn't someone here say to set it to enabled for increased stability or something? I had it on Auto before i heard that, and now it's disabled.
Spread Spectrum should always be disabled when overclocking. It's been like that for years. Though I remember my Gigabyte X58 board use to have it hidden and enabled. Had to CTRL + F1 to show in BIOS and then disabled it thereafter.
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