Core 3 error detected

Tullphan

Diamond Member
Jul 27, 2001
3,507
5
81
:mad:I recently purchased an i5 2500k setup & am wondering if I may possibly have a faulty chip.
While running 100 passes of IBT, I noticed core 3 was about 5-6c hotter than the other cores, but the test passed without errors
This morning I raised the multiplier up another notch & started OCCT. After about 10 minutes the program stops & I get the message "error detected on core 3".
Do I have a defective chip?
Thanks.
 

Idontcare

Elite Member
Oct 10, 1999
21,110
59
91
Do I have a defective chip?

Is it stable at the stock clockspeeds that it was sold to operate?

If the answer is yes, then the answer to your question is no.

Overclocking is YMMV (your mileage may vary)...not being able to overclock does not mean your chip is defective, it means you don't get something for nothing unlike some of your fellow OC'ers who are getting something for nothing when they OC their chips.
 

sm625

Diamond Member
May 6, 2011
8,172
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I would RMA that sucker.... assuming the socket looks good.
 

mnewsham

Lifer
Oct 2, 2010
14,539
428
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I never understood the thought process where if the chip doesn't OC to other's posted levels then it must be defective, if it runs at stock settings with no problems then you have a perfectly functioning unit.
 

Tullphan

Diamond Member
Jul 27, 2001
3,507
5
81
Core 3 ran at higher temps than the other cores at stock speed and voltage. That's what struck me odd. I realize overclocking it's a ymmv & have known that since the days of the Celeron 300 @ 450mhz. ;)
 

Rvenger

Elite Member <br> Super Moderator <br> Video Cards
Apr 6, 2004
6,283
5
81
:mad:I recently purchased an i5 2500k setup & am wondering if I may possibly have a faulty chip.
While running 100 passes of IBT, I noticed core 3 was about 5-6c hotter than the other cores, but the test passed without errors
This morning I raised the multiplier up another notch & started OCCT. After about 10 minutes the program stops & I get the message "error detected on core 3".
Do I have a defective chip?
Thanks.


Are you sure you are overclocking it right? These chips are different than the older ones. You should be able to achieve 4.2ghz from every "k" chip imho. That's what MSI guarantees on their oc genie boards so with the correct adjustments, it should be feasible.
 

podspi

Golden Member
Jan 11, 2011
1,982
102
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Is it stable at the stock clockspeeds that it was sold to operate?

If the answer is yes, then the answer to your question is no.

Overclocking is YMMV (your mileage may vary)...not being able to overclock does not mean your chip is defective, it means you don't get something for nothing unlike some of your fellow OC'ers who are getting something for nothing when they OC their chips.


Technically of course you are 100% correct IDC. However, OCing is a lot different than it used to be. It never used to be a "feature", it used to be an unsupported tweak. Now CPUs are sold as overclocking CPUs, with special overclocking SKUs. While I think it is kind of silly, if you buy an "overclocking" CPU even though you might not have any true right to being able to overclock, it is implied that you will. This isn't some sub-$100 CPU the OP is talking about that he's trying to get to act like something worth twice as much, this is an OCing SKU he purchased.
 

Tullphan

Diamond Member
Jul 27, 2001
3,507
5
81
I'm not really having a problem with an overclock, its just that since I've had the chip I've noticed that core 3 ran a few degrees hotter than the other cores whether it was overclocked or not. When I was stress testing my last overclock is when I got that message. Perhaps I do need to bump the voltage up a notch if I want to try & continue at that speed, but my concern is that one core that's ran hotter than the others since day one.
 

Topweasel

Diamond Member
Oct 19, 2000
5,437
1,659
136
I'm not really having a problem with an overclock, its just that since I've had the chip I've noticed that core 3 ran a few degrees hotter than the other cores whether it was overclocked or not. When I was stress testing my last overclock is when I got that message. Perhaps I do need to bump the voltage up a notch if I want to try & continue at that speed, but my concern is that one core that's ran hotter than the others since day one.

The problem Tullphan is that being 5-6 degrees hotter does probably mean that the chip isn't great. But being defective and not getting the best of the bunch are two different things. Think of this CPU as being the dullest pencil in the box.
 

GammaLaser

Member
May 31, 2011
173
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I'm not really having a problem with an overclock, its just that since I've had the chip I've noticed that core 3 ran a few degrees hotter than the other cores whether it was overclocked or not. When I was stress testing my last overclock is when I got that message. Perhaps I do need to bump the voltage up a notch if I want to try & continue at that speed, but my concern is that one core that's ran hotter than the others since day one.

Not all that unusual.

All transistor's aren't created equal, unfortunately. :\
 

Idontcare

Elite Member
Oct 10, 1999
21,110
59
91
Technically of course you are 100&#37; correct IDC. However, OCing is a lot different than it used to be. It never used to be a "feature", it used to be an unsupported tweak. Now CPUs are sold as overclocking CPUs, with special overclocking SKUs. While I think it is kind of silly, if you buy an "overclocking" CPU even though you might not have any true right to being able to overclock, it is implied that you will. This isn't some sub-$100 CPU the OP is talking about that he's trying to get to act like something worth twice as much, this is an OCing SKU he purchased.

Developing a sense of entitlement for something that is neither assured nor guaranteed is a path that is ensured to end in disappointment.

Product spec's exist for a reason, to set expectation of the minimum performance of the product.

If I buy an AMD mobo that is advertised as "capable of core unlocking" and then I buy an X3 AMD chip am I entitled to expect to be able to unlock that fourth core on the AMD chip?

And if I can't get that core to unlock then who am I to blame? Is my mobo not meeting the implied expectations, or is the X3 chip AMD sold me (they left a locked core on there for a reason, right? I deserve to be able to unlock it, I'm entitled to a free fourth core) to blame for my not being able to unlock the core?

Sense of entitlement and false expectations are slippery slopes, once you feel like you can begin to rationalize something in that direction you will suddenly find yourself unable to argue against a whole host of undeniably absurd assertions of entitlement and expectations.

There is a reason the chip is sold simply as an unlocked chip with the potential for overclocking but no amount of a minimum overclock is guaranteed. (not even 1 MHz, which means the consumer should be open to possibility of getting a chip that cannot overclock by even 1MHz)

I'm not really having a problem with an overclock, its just that since I've had the chip I've noticed that core 3 ran a few degrees hotter than the other cores whether it was overclocked or not. When I was stress testing my last overclock is when I got that message. Perhaps I do need to bump the voltage up a notch if I want to try & continue at that speed, but my concern is that one core that's ran hotter than the others since day one.

Some parts of an IC will be hotter than others, within chip variations are unavoidable. So the result may be real, the core in question may well be slightly warmer than the other three. That does not mean it is defective or out of spec.

However...you don't actually know if the reported core temps are correct. DTS error is real, and can be sizable. For all you know the core that is reporting itself as having the highest temperature is actually the coolest core of the four.

DTSslopeinducederroredited.jpg
 

Minerva

Platinum Member
Nov 18, 1999
2,129
20
81
There's a newer version of OCCT too. It's up to 4.x now and has multiple screens showing a plethora of voltages/temps/etc. graphed in real time while it's running. When it gives an error though it does not indicate if it's a core, memory, etc.

Of course just because it goes down on "core x", etc. does not necessarily mean it's that core discretely. Raising voltage on cores, VTT, etc. Even IOH/PLL can help as long as you don't go too high and temps stay reasonable, etc.

NO two chips are alike when comparing realtemp numbers. Some show more variance between cores than others. It could be how the IHS was bonded or it could be sensor variation or both. If it bothers you try remounting several times. If no change is noted than chances are its something you have no control over anyway and not worth fussing over.

EDIT: IDC's diagram above nails it well. (as usual! :p )
 
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Rvenger

Elite Member <br> Super Moderator <br> Video Cards
Apr 6, 2004
6,283
5
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The problem Tullphan is that being 5-6 degrees hotter does probably mean that the chip isn't great. But being defective and not getting the best of the bunch are two different things. Think of this CPU as being the dullest pencil in the box.

Could be a misread.
 

Seero

Golden Member
Nov 4, 2009
1,456
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I don't know for sure, but I believe the thermal paste wasn't spreaded properly, therefore resulting poor heatsink contact which makes core 3 temp higher.

When doing OC test on an unstable setting, error will arises. In your case, it is always core 3, but it really doesn't matter, your vcore voltage is not enough, that is all.

Like IDC said, if it is stable on stock setting, then the CPU is fine. The make of each core may be slightly different and thus may require a different voltage to operate. Since it is okay to overvolt without increasing speed, it is okay to use a voltage that is higher than the minimum needed for 3/4 cores just so that the 1 core in question will operate without issue.

Just to show you some relieve, 5-6c between cores ain't a big deal.

If you still have questions, then please let us know the following:
what is the multiplier set to?
what is the vcore set to?
how did you apply thermal paste, and what is the brand of the thermal paste?
what was the temp on cores when error occurs?
 
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Kenmitch

Diamond Member
Oct 10, 1999
8,505
2,250
136
Your chip is fine. A couple of degrees between cores under 100&#37; load isn't anything to worry about. Just bump the vcore a tic or two and it'll pass OCCT most likely.

My 2500K running at 4.6ghz temps are pretty much the same at idle. Under 100% load the two center cores run about 5*C hotter. I'm not worried about it. My chip will run at 5ghz so I doubt mines defective :)

Maybe someday I'll try reseating my water block as maybe it's unevern thermal compound?

What speed you trying for?
What voltage?
What are your temps?
 

Topweasel

Diamond Member
Oct 19, 2000
5,437
1,659
136
Could be a misread.

That could be as well, but since the error is the same core already running "hot" would make me think otherwise. But the main point being that they sold it at one speed and it runs at that speed, that isn't a defective chip as long as its running in specs, one core being hotter as long as its running within upper temp limits with an Intel cooler running within a system that meets intel's expectations then its good.

They also didn't sell the K as an overclock-able chip. They sold it as an unlocked chip with more advanced integrated graphics. Unlocked and overclock-able are two different things.
 

sangyup81

Golden Member
Feb 22, 2005
1,082
1
81
:mad:I recently purchased an i5 2500k setup & am wondering if I may possibly have a faulty chip.
While running 100 passes of IBT, I noticed core 3 was about 5-6c hotter than the other cores, but the test passed without errors
This morning I raised the multiplier up another notch & started OCCT. After about 10 minutes the program stops & I get the message "error detected on core 3".
Do I have a defective chip?
Thanks.

Overclocking requires some luck and it seems for this 2500K, you don't have it. Just ebay it and it'll probably end up with someone who doesn't want to overclock it anyways.
 

podspi

Golden Member
Jan 11, 2011
1,982
102
106
Developing a sense of entitlement for something that is neither assured nor guaranteed is a path that is ensured to end in disappointment.

Product spec's exist for a reason, to set expectation of the minimum performance of the product.

If I buy an AMD mobo that is advertised as "capable of core unlocking" and then I buy an X3 AMD chip am I entitled to expect to be able to unlock that fourth core on the AMD chip?

And if I can't get that core to unlock then who am I to blame? Is my mobo not meeting the implied expectations, or is the X3 chip AMD sold me (they left a locked core on there for a reason, right? I deserve to be able to unlock it, I'm entitled to a free fourth core) to blame for my not being able to unlock the core?

Sense of entitlement and false expectations are slippery slopes, once you feel like you can begin to rationalize something in that direction you will suddenly find yourself unable to argue against a whole host of undeniably absurd assertions of entitlement and expectations.

That isn't what is going on here. If AMD sold two X3s, one with three actual cores, and one advertised with a 4th, locked, core (along with a higher price), all of a sudden things have changed. Why advertise the 4th (locked) core if it shouldn't change my expectation of the product, and why charge a higher price?

I'm not arguing that OP should RMA his CPU, nor do I believe he should be allowed to. I understand what specs are, and as long as his CPU operates with those specs his CPU is fine. That being said, I dislike how semiconductor companies have recently been selling OCing as a feature -- a feature as you state they offer no guarantee on.

I understand people can sometimes feel far too entitled to things these days, but paying extra for a product that advertises the ability to overclock (we're talking about the CPU, NOT the motherboard) and then fails to do so (of course, technically it IS unlocked) is not a false sense of entitlement. The manufacturer has IMPLIED you will be able to do something (up until the point where they'd actually be legally obligated to provide that level of performance) in the hopes you'll pretend their implication is as good as a guarantee. I agree with you that people shouldn't actually expect the implied levels of performance -- but I believe it is dishonest marketing.
 

Idontcare

Elite Member
Oct 10, 1999
21,110
59
91
That isn't what is going on here. If AMD sold two X3s, one with three actual cores, and one advertised with a 4th, locked, core (along with a higher price), all of a sudden things have changed. Why advertise the 4th (locked) core if it shouldn't change my expectation of the product, and why charge a higher price?

I'm not arguing that OP should RMA his CPU, nor do I believe he should be allowed to. I understand what specs are, and as long as his CPU operates with those specs his CPU is fine. That being said, I dislike how semiconductor companies have recently been selling OCing as a feature -- a feature as you state they offer no guarantee on.

I understand people can sometimes feel far too entitled to things these days, but paying extra for a product that advertises the ability to overclock (we're talking about the CPU, NOT the motherboard) and then fails to do so (of course, technically it IS unlocked) is not a false sense of entitlement. The manufacturer has IMPLIED you will be able to do something (up until the point where they'd actually be legally obligated to provide that level of performance) in the hopes you'll pretend their implication is as good as a guarantee. I agree with you that people shouldn't actually expect the implied levels of performance -- but I believe it is dishonest marketing.

All of the above, from the hypothetical case of AMD selling two differing cpu's with the same specs but for different prices and different "locked" features, to the topic of selling unlocked CPU's that may or may not be overclockable, all falls under the purview of "buyer beware".

Marketing's job is to sell the "implied" while limiting liability to "the fine print". Yes?

I can't tell if you are just taking exception to the notion that Intel's unlocked chips may not be overclockable or if you are simply against the entire industry of marketing, the use of fine print, and buyer beware of trying to get something for nothing.

There's a school of that you can't scam an honest man. The idea being that it takes a dishonest person who is out looking for an unhonest way to get something for free or on the cheap to unwittingly fall into a scam offering (implying, via marketing) as much.

Core unlocking is like that, it is a "feature" offered by mobo makers (and AMD could have put an end to that immediately, if they really wanted to, but they let it go since it obviously netted them more coin than otherwise) which for people looking to get something for nothing (or for less than paying the price of a fully functional cpu) was great, except for when it didn't pan out on every locked cpu...

Same with overclocking. We are all looking to get more out of what we paid for versus paying more and getting exactly what we paid for. Sure the marketing here is implying we can actually get away with it, that's why mankind invented the industry of marketing.

But let's state the obvious, inventing the industry of marketing would not have resulted in much were it not for the fact that there is a whole world full of people out there who are ready and willing to listen to it.

Marketing works because people are receptive to the idea of getting the "implied" when they know they are only buying whatever is laid out in the fine print. Hence the reasons we all know what the term "fine print" entails, we are all keenly aware of these distinctions for the very reasons the distinctions exist.
 

Diogenes2

Platinum Member
Jul 26, 2001
2,151
0
0
Core 3 ran at higher temps than the other cores at stock speed and voltage. That's what struck me odd. I realize overclocking it's a ymmv & have known that since the days of the Celeron 300 @ 450mhz. ;)

Counting from 1 or 0 ?


Counting from 1, cores 2 & 3 run up to 10c hotter than 1 & 4 on my 2600K ...
 

Tullphan

Diamond Member
Jul 27, 2001
3,507
5
81
I don't know for sure, but I believe the thermal paste wasn't spreaded properly, therefore resulting poor heatsink contact which makes core 3 temp higher.

When doing OC test on an unstable setting, error will arises. In your case, it is always core 3, but it really doesn't matter, your vcore voltage is not enough, that is all.

Like IDC said, if it is stable on stock setting, then the CPU is fine. The make of each core may be slightly different and thus may require a different voltage to operate. Since it is okay to overvolt without increasing speed, it is okay to use a voltage that is higher than the minimum needed for 3/4 cores just so that the 1 core in question will operate without issue.

Just to show you some relieve, 5-6c between cores ain't a big deal.

If you still have questions, then please let us know the following:
what is the multiplier set to?
what is the vcore set to?
how did you apply thermal paste, and what is the brand of the thermal paste?
we was the temp on cores when error occurs?


Shin-Etsu is the TIM I'm using. I started out using a "pea" sized dollop in the center of the cpu & when I saw the inconsistent temps I reapplied & tried again, but the temps were still inconsistent. I then applied using the "X" instead of the pea, but that didn't help either.
For my overclock, the vcore was set @ 1.28v & the multiplier was at 45. Highest temp was core 3 with 77c, lowest was core 1 with 71c. I ran 100 passes with IBT successfully.
This morning I raised the vcore to 1.285 & the multiplier to 46 & attempted to run OCCT when I got the error message.
If it's normal for one core to be 6c warmer than the coolest core, then fine...I'll deal with it. But if it's not normal for a chip to have a core running 6c than the coolest core, even at stock settings, then I want to do something about it.
Throw overclocking out the window for a moment. If I installed this new, left everything stock & checked the temps & one core was 6c hotter than the coolest core, would that be "normal"?
 

john3850

Golden Member
Oct 19, 2002
1,436
21
81
As said above more vcore will help.
Your temps are getting high so your holding back on the volts.
Take off your case cover and up the volts
 

Diogenes2

Platinum Member
Jul 26, 2001
2,151
0
0
................
Throw overclocking out the window for a moment. If I installed this new, left everything stock & checked the temps & one core was 6c hotter than the coolest core, would that be "normal"?
Did you read my post, right before this one ?

Several degrees hotter on the inner cores seems to be typical for SB..

You can also expect to need 1.3 - 1.35 vcore to get 4.6 stable..
 

Tullphan

Diamond Member
Jul 27, 2001
3,507
5
81
Did you read my post, right before this one ?

Several degrees hotter on the inner cores seems to be typical for SB..

You can also expect to need 1.3 - 1.35 vcore to get 4.6 stable..

My bad. I was posting while on the road from my Droid. It's not quite as fast as my cable connection at home. I may have missed a reply or 3. :)