I have a quirk with Prime95, worker # 1 is 1 min behind worker #2!

R

RJARRRPCGP

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• Aug 10, 2009

• #1

I heard an unconfirmed report that it can be throttling, even without RealTemp giving any warning!

And the temp never went higher than 67 C, according to RealTemp and Prime95 is running as I'm posting.

Also, only 61 C, according to RealTemp, as I'm posting.

I'm posting this, because I can't recall this occuring when I ran Prime95 with Windows 7 beta, back in January.

 

Last edited: Aug 10, 2009

KonaKona

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Nov 25, 2008

• Aug 10, 2009

• #2

Might just be a core working slower than another one. Two cores on my Q6600 are a bit slower than the other two and fall behind in P95.

 

Kuroimaho

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• Aug 10, 2009

• #3

Most likely something else is running in the background on the slower core.

 

OP

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• #4

Welp, Prime95 failed, with the more typical error messages, wasn't any error message from Windows or a freeze.

Prime95 failed at 5 hours, at 3.0 Ghz with Vcore at 1.45V.

Which setting should I try? I'm back in the BIOS, as I'm posting.

 

Last edited: Aug 10, 2009

D

doz

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• Aug 10, 2009

• #5

If you are utilizing yoru computer (even just web browsing) while running Prime, it will take away from that core being able to put 100% towards Prime.

 

OP

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• #6

doz said:

If you are utilizing yoru computer (even just web browsing) while running Prime, it will take away from that core being able to put 100% towards Prime.

Click to expand...

I left it without doing anything.

 

Bobnova

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• Aug 10, 2009

• #7

My second core does everything more slowly then the first one, regardless of whether i'm doing something in the background or not. It also requires a lot more vcore when overclocking then the first core, leading me to believe that it's partially defective. Given that it's a Pentium Dual Core branding rather then C2D, it almost certainly is.

 

OP

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• #8

I'm back at 363x8.0 .

I estimate that 368x8.0 is possible. Maybe 370x8.0.

 

MongGrel

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• Aug 10, 2009

• #9

That type of thing would happen to me when you have another background program running, as has been said.

If you've a DLD going or something in the background it will drag one down a bit to keep the other program running.

Kind of had me scratching my head the first time I saw a core dropping behind then realised what was up



With just two cores I guess I really couldn't say for sure, been using quads myself awhile, I'd think with two it would drag one down just to keep system going at all though, hmm.

 

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• #10

I was wondering, then Prime95 failed shortly after, Prime95 gave me an error.

But not majorly unstable, because it took 5 hours to fail for cryin' out loud.

 

OP

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• Aug 11, 2009

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• #11

Here's the report that I thought I saw earlier, IIRC:

http://www.anandtech.com/cpuchipsets/intel/showdoc.aspx?i=3184&p=4

 

King107s

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• Aug 11, 2009

• #12

1.45V seems pretty high which goes right along with thoes high temps. Try lowering your vcore and adjusting some of the other voltages.

I agree with the above comments, your other cores may working on other processes as well thus its running slower and possibly hotter.

 

OP

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• #13

King107s said:

1.45V seems pretty high which goes right along with thoes high temps. Try lowering your vcore and adjusting some of the other voltages.

I agree with the above comments, your other cores may working on other processes as well thus its running slower and possibly hotter.

Click to expand...

I have a Conroe, so 1.45V isn't that high.

Also, I can get 3.0 Ghz stably at 1.40V, when pigs fly!

(Prime95 errored out on me yesterday evening.)

 

OP

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• Aug 13, 2009

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• #14

Are *ALL* these symptoms of the heatsink working loose on me?

When I brought it back to 2.6 Ghz and stock Vcore, I don't see the temps jump around like before.

Am I having the same problem, where the core temp is higher than RealTemp acknowledges?

Where it fails to update, even when it didn't hard lock on me.

Where it would hit 90 C even when it's showing only around 65 C?