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post #41 of 74
That explains it 1.241v is a rather high VID, and fully explains why you need so much vcore. My worse of my 2600k's has a 1.235v vid and it could do 4.5 ghz at 1.284v before it degraded from abuse at 5 ghz. That chip needed over 1.46v for any sort of stability at 5 ghz (and boy did that one degrade fast!), when it was new out of the box, while my lower VID one was happy at 1.404v (when it was new). That one needs 1.440v-1.452v for full stability now, while before the first one degraded after a bunch of 5.3 ghz 1.58v gaming, it needed 1.49v.

I suspect your chip runs quite cool, right?
(My higher VID chip runs over 5C cooler than my lower VID one).
Edited by Falkentyne - 5/24/11 at 7:53pm
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post #42 of 74
Thread Starter 
Where I'm at the ambient temps get pretty bad. It's probably 80F in here right now and it's running at about 32 or 33C idle. I've seen it as low as 25C when it was in the mid-60's F in here earlier in the year.
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post #43 of 74
Thread Starter 
Well, I got another 01E. Again, only had Firefox open.

So at this point I'm guessing it's the board. That's the only change I've had, from a B2 board to a B3 rev. UD4 and that's when all this started.
Edited by soldierblue - 5/25/11 at 9:56pm
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post #44 of 74
Thread Starter 
I'm running it stock to see if it does it. So here's my thinking (can someone corroborate my line of thinking?):

This board won't even prime with 1.356v on the CPU under load. It errors out.

Voltage doesn't seem to make a difference. You get the CPU up to 1.32 load, where it was at most of the time, it stops BSODing when priming. But at that point, and above it starts just returning errors.

All the BSODs are 1Es. Which are usually indicative of violently unstable systems. But the fact that it's not doing it under high load indicates otherwise. When I deliberately lowered the CPUs Vcore under 1.3 to force it to BSOD, it always gave me 101s or 124s. Not 1Es. Since 1E would indicate violent instability, it should still do that if I lowered the voltage that 0.05v. But it doesn't. Leading me to think the issue is separate to the CPU (doesn't BSOD under high load) RAM (passed Memtest at 1600) and the IMC (was not responsive to VTT adjustments).

I think if I swap out the motherboard, I'll be set.
Edited by soldierblue - 5/25/11 at 10:59pm
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post #45 of 74
You sure the problem isn't memory issues with IMC?
I've never encountered 1E errors on prime on either of my two 2600k's...its always been 0124's or 0101's....

I've seen people with incompatible RAM get strange errors or issues, even with XMP profiles (and the RAM was considered compatible on the manufacturers website.

Yeah the 1E's are a clear sign of something else going on besides vcore.
Edited by Falkentyne - 5/26/11 at 1:25am
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post #46 of 74
Thread Starter 
I ran memtest all night at 1600 with the XMP profile active. No errors.

How could I specifically test the IMC?
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post #47 of 74
Memtest doesn't test the IMC. And it doesn't stress it, either. The IMC is part of the CPU. Using memtest to test the IMC is like using memtest to test the northbridge on a core2...not going to find errors unless you are so unstable that you can't boot windows.

For example: I tried overclocking my RAM from 1600 cas 9, to 1600 cas 8-8-8-20. I ram memtest to make sure I could get into windows without corrupting the filesystem. ZERO errors. Memtest didn't detect a single problem.

I boot into windows...run Prime blend.....ALL EIGHT CORES crashed within 3 seconds of starting prime. All 8.

That should tell you how useless memtest is.

Its ONLY use is to make sure you can get into windows without destroying the registry or FAT. If you don't get errors in memtest, you SHOULD be able to make it into windows without scrambling the file tables. If you do get a bunch of errors in memtest and try to load windows, not only will you crash, unlike CPU errors that are caught by the CPU and sent as an erratum, your files may be damaged before a BSOD can protect them.

(this is why you can get a BSOD from cpu instability (be thankful the cpu can flag these!), while RAM errors are more likely to crash programss and really make things go south).

Your only real choice right now is to try to tweak the RAM settings. It's possible you have a bad IMC (this has happened before) or some other problem, but if you can afford it and changing RAM speeds or timings doesn't help the problem, before RMA'ing the CPU (Just claim the errors and Intel will swap it), you can try a different RAM kit....

BTW, some people have been having problems with the 1.5v Gskill 1600 mhz RAM on P8P boards, while that ram works great on Gigabyte. But then again, someone recently had overclocking failed problems after the system was powered off for awhile, and that went away after switching from gskill to mushkin (i think) or another brand. Yet that doesn't happen to me?

Could be a issue that there are TWO 1333 mhz (and maybe 1600 mhz) gskill ripjaw 1.5v kits over on newegg...one p67 certified, one not certified...both same timings...both 1.5v...maybe he got the non certified one? I don't know...but I do know that the RAM I bought (1600 c9) works perfectly on my GB while people were saying they had idle hard locks on the Asus boards....
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post #48 of 74
Quote:
Originally Posted by soldierblue View Post
I'm running it stock to see if it does it. So here's my thinking (can someone corroborate my line of thinking?):

This board won't even prime with 1.356v on the CPU under load. It errors out.

Voltage doesn't seem to make a difference. You get the CPU up to 1.32 load, where it was at most of the time, it stops BSODing when priming. But at that point, and above it starts just returning errors.

All the BSODs are 1Es. Which are usually indicative of violently unstable systems. But the fact that it's not doing it under high load indicates otherwise. When I deliberately lowered the CPUs Vcore under 1.3 to force it to BSOD, it always gave me 101s or 124s. Not 1Es. Since 1E would indicate violent instability, it should still do that if I lowered the voltage that 0.05v. But it doesn't. Leading me to think the issue is separate to the CPU (doesn't BSOD under high load) RAM (passed Memtest at 1600) and the IMC (was not responsive to VTT adjustments).

I think if I swap out the motherboard, I'll be set.
A bum board is possible, but the ud4 b3 in general is OK. I have the same board & primed 5ghz at 1.36V loaded with a 2500k, the board doesn't play nice with my memory kits over 1866Mhz though (even a kit that can do 2400Mhz), regardless of vdimm & VTT voltages.

Quote:
Originally Posted by Falkentyne View Post
Memtest doesn't test the IMC. And it doesn't stress it, either. The IMC is part of the CPU. Using memtest to test the IMC is like using memtest to test the northbridge on a core2...not going to find errors unless you are so unstable that you can't boot windows.

For example: I tried overclocking my RAM from 1600 cas 9, to 1600 cas 8-8-8-20. I ram memtest to make sure I could get into windows without corrupting the filesystem. ZERO errors. Memtest didn't detect a single problem.

I boot into windows...run Prime blend.....ALL EIGHT CORES crashed within 3 seconds of starting prime. All 8.

That should tell you how useless memtest is.

Its ONLY use is to make sure you can get into windows without destroying the registry or FAT. If you don't get errors in memtest, you SHOULD be able to make it into windows without scrambling the file tables. If you do get a bunch of errors in memtest and try to load windows, not only will you crash, unlike CPU errors that are caught by the CPU and sent as an erratum, your files may be damaged before a BSOD can protect them.

(this is why you can get a BSOD from cpu instability (be thankful the cpu can flag these!), while RAM errors are more likely to crash programss and really make things go south).

Your only real choice right now is to try to tweak the RAM settings. It's possible you have a bad IMC (this has happened before) or some other problem, but if you can afford it and changing RAM speeds or timings doesn't help the problem, before RMA'ing the CPU (Just claim the errors and Intel will swap it), you can try a different RAM kit....

BTW, some people have been having problems with the 1.5v Gskill 1600 mhz RAM on P8P boards, while that ram works great on Gigabyte. But then again, someone recently had overclocking failed problems after the system was powered off for awhile, and that went away after switching from gskill to mushkin (i think) or another brand. Yet that doesn't happen to me?

Could be a issue that there are TWO 1333 mhz (and maybe 1600 mhz) gskill ripjaw 1.5v kits over on newegg...one p67 certified, one not certified...both same timings...both 1.5v...maybe he got the non certified one? I don't know...but I do know that the RAM I bought (1600 c9) works perfectly on my GB while people were saying they had idle hard locks on the Asus boards....
I'm not sure about this, but I don't think memtest86 will test overclocked memory properly. In the past testing some memory I passed memtest86 with flying colors, while failing memtestHCI from within windows.
    
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post #49 of 74
Thread Starter 
So far Intel is agreeing with the IMC idea.
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post #50 of 74
Thread Starter 
Quote:
Originally Posted by FtW 420 View Post
A bum board is possible, but the ud4 b3 in general is OK. I have the same board & primed 5ghz at 1.36V loaded with a 2500k, the board doesn't play nice with my memory kits over 1866Mhz though (even a kit that can do 2400Mhz), regardless of vdimm & VTT voltages.



I'm not sure about this, but I don't think memtest86 will test overclocked memory properly. In the past testing some memory I passed memtest86 with flying colors, while failing memtestHCI from within windows.
It does indeed fail MemtestHCI. Memtest86 was fine overnight. So I'm not sure what to make of that, to be honest.

There's still the same four possibilities then, I guess. There's a bad stick in there, the board doesn't like my RAM, there's something wrong with the board, and the IMC is bad.

I could conceivably get another RAM kit. But both the board and CPU I'd probably have to RMA rather than buy a new one outright. I'd prefer as little downtime as possible. So maybe getting another kit might be a decent enough idea. If it still exhibits the issue, send them on back and move on to the next possibility.

I'm re-running at 1333 with the VTT at 1.12v to counteract the 8gb.

UPDATE: Passed.

UPDATE 2: RMAing the RAM with Corsair. Hopefully I can get an advance RMA.
Edited by soldierblue - 5/26/11 at 3:21pm
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