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post #631 of 3304
5/22/12 at 7:03am
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Quote:
Originally Posted by Iketh View Post

"Internal parity error" means the processor checked its own work and got different results. So the processor has to rerun the calculation from scratch to find out which result (if either) was correct. Once it's done rerunning the calculation, it reports the situation to the OS for logging. It goes without saying that these errors are a sign of instability and lower performance.
What I find most intriguing is that I can't get these errors to show up at all on my 2600k no matter how unstable I make it... with all the playing with overclocks and the 1000 or so BSODs over the past several months, I don't have a single whea 19 warning...

Ya I am in the same boat as you. I never seen these errors on previous chips... Q9550, E7200, P4...
Interestingly when I looked back at the log file I saw a massive 170+ WHEA errors from when I was still getting my overclock figured out.
The settings I have now I have not seen one in the newest record date, and the log is slowly decreasing in reported as the time frame grows.

It must be a new instruction the CPU is giving the OS to be reported.
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post #632 of 3304
5/22/12 at 7:10am
Quote:
Originally Posted by mandrix View Post

Does anyone have a link to P95 26.6? I seem to have deleted it from the drive, all I could find on the site was 27.7.
Thanks!
If you Google it, you can find it somewhere. It's just hard to find.
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post #633 of 3304
5/22/12 at 7:15am
Quote:
Originally Posted by mandrix View Post

Does anyone have a link to P95 26.6? I seem to have deleted it from the drive, all I could find on the site was 27.7.
Thanks!
ftp://mersenne.org/gimps/p64v266.zip

There you go. smile.gif
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post #634 of 3304
5/22/12 at 7:16am
Quote:
Originally Posted by mandrix View Post

Man some of you guys have some low vcore. Seems no matter what cpu I get it's always voltage hungry. Only way I can stay north of WHEA warnings is 1.272 max vcore in Prime 95. Or is everyone even checking for those errors? If I ignored the event logs I could go much lower but still a bit higher than some of you.
Does anyone have a comprehensive explanation of what exactly the WHEA error 19 is? Mine always says "A corrected hardware error has occurred." "Error type: Internal parity error".
So does that mean a calculation was checked and corrected and all is good or the machine is on the edge of total fail or what? cpu gurus?

4.5 with low volts and no WHEA was a non issue with my chip, 4.6+ is a totally different matter though. Seems to want around 1.27+ to get no WHEA and 4.6 with my chip at least. I'm digging 4.5 and the low volts tho, will probably keep it right where it is and not bother with 4.6+, temps really jump then too.
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post #635 of 3304
5/22/12 at 7:19am
Quote:
Originally Posted by wind784 View Post

4.5 with low volts and no WHEA was a non issue with my chip, 4.6+ is a totally different matter though. Seems to want around 1.27+ to get no WHEA and 4.6 with my chip at least. I'm digging 4.5 and the low volts tho, will probably keep it right where it is and not bother with 4.6+, temps really jump then too.

Rub it in why don't ya
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post #636 of 3304
5/22/12 at 9:40am
I hadn't heard of WHEA either, not on Sandy Bridge.
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post #637 of 3304
5/22/12 at 10:13am
Quote:
Originally Posted by wind784 View Post

4.5 with low volts and no WHEA was a non issue with my chip, 4.6+ is a totally different matter though. Seems to want around 1.27+ to get no WHEA and 4.6 with my chip at least. I'm digging 4.5 and the low volts tho, will probably keep it right where it is and not bother with 4.6+, temps really jump then too.

same with mine - I need 1.285V for 4.5 (with HT on) with no WHEA errors

4.6 is no go - no matter what volts I get errors - interestingly - too low I get loads of errors (every 1 minute during a Handbrake encode), higher up very few (1 every 30 mins- 1hr or so) - but too high and too hot (>95C) I get loads again ... every 30 seconds !! so I think heat and Vcore related ...

I did find a thread regarding WHEA errors on a 2700k so its not just Ivys ...

I find best stability test is any of the new nightlies for Handbrake which use AVX - I get high temps (higher than Blend Prime) and its more prevelant to crashing due to instability or giving WHEA errors

so its a good stress test and you can do useful encodes at same time smile.gif
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post #638 of 3304
5/22/12 at 10:16am
The only WHEA errors I have correspond to runs where prime failed/stopped/error and stopped. I assume you guys when running prime 95 go to advanced tab and put check beside 1) sum (inputs) error checking as well as 2) round off checking.

Since version 26 of prime95..., quote "Some of the new, faster FFTs don't let us do as much error checking on each iteration. If you don't want to lose this error checking, choose "SUM(INPUTS) error checking" from the Options menu. This will slow down your tests by about 2-5%".

So my question is are you guys saying you have prime checking for both those error types, and you are still getting WHEA errors that prime program is missing....or do you not have both of those checked hence getting whea errors only?

I cant tell from looking at my logs, since all my stable runs, have no whea errors during those time frames, and I did not specifically look for WHEA errors if they exactly corresponded to prime errors.
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post #639 of 3304
5/22/12 at 10:22am
Quote:
Originally Posted by Andeby View Post

ftp://mersenne.org/gimps/p64v266.zip
There you go. smile.gif
Thanks!
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post #640 of 3304
5/22/12 at 10:35am
Quote:
Originally Posted by Murlocke View Post

Sean:
Set VCCSA, VCCIO, and PCH voltage to Auto. You don't need to touch these for Ivy.
Set PLL to 1.5, if that's not stable do 1.55v. 1.5v is stable for most.
Do you really need 1.51v on your RAM? It looks to be overvolting (1.53v actually). I would set that to 1.5 because if your kit is rated for that it should be stable.
Load your processor with Prime95, and see what CPU-Z say it's voltage is after it's fully loaded. Then set Load Line calibration to Very High. You will have to lower your CPU voltage to match what CPU-Z previously said. Trial and error.
BLCK and VRM Spread Spectum, I'm not sure why we would need to enable it. It shouldn't matter for Ivy since it's all overclocked with the multiplier? I left mine disabled. Anyone know?
CPU Duty Cycle I left on T. Probe. Not sure what it does.. I didn't have all these settings last time I overclocked. tongue.gif
I also left my Power Phase Control to Auto, and VRM freq on Auto. Not sure how much of a difference adjusting these would be, and I already got 4.6GHz stable. I doubt they make a big enough difference for me to get 4.7GHz since i'm already loading at 88C.

very very poor advice and guide... its antioverclocking guide
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