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correct Temps I5 2500K overclock

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February 10, 2012 10:59:45 AM

Hello Everyone,

I have an issue with my CPU giving up and down ratings on SpeedFan. I have researched the issue and found numerous similar issues but nothing with an answer that reoccurs

Specs:
Case: CM HAF 922
CPU: I5 2500k
GPU: EVGA GTX580 3GB
MOBO:ASUS P8P67 Pro (B3 revision if that matters)
RAM:Corsair Vengance 8 GB
SSD: Intel 120GB (scary I know)
PSU: 750 Watts

I normally never see the temp budge from -60 C but if it goes into sleep mode it woill come back with a temp of 124 C..........Shut it off cut back on and normal again. This was with the stock cpu before, took off and reapplied (did not put more paste on). Followed by last nights project of swapping in a CM Hyper 212 and applying well enough Artic Silver and getting the same -60

Is there anyway I can fix this to read my temps?? I wish to try an overclock now that I possess a decent enough cooler.

Thanks for any replies :D 
a b à CPUs
February 10, 2012 12:12:47 PM

Does bios say the same temps - try use Coretemp :) 
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February 10, 2012 3:56:01 PM

BIOS is correct. Going to give Coretemp a shot
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February 10, 2012 5:46:09 PM

Ok so with my MOBO setting on "performance" it's showing 43 C while at an idle with the CM Hyper 212 installed.

Does this appear average for this cooler? Room temps is about 72 F
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February 10, 2012 5:57:28 PM

Low 40s at idle is pretty good. Not amazing, but good.
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February 10, 2012 6:21:36 PM

Yeah? Then why mine idles at 23c ? might be something wrong with sensors
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February 10, 2012 6:26:08 PM

On Coretemps it reads 28-30 c at an idle across all the cores

Does that sound more like it?

Why would the BIOS read so high?
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February 10, 2012 6:36:09 PM

Sounds right. Not sure why would it do that. Is it latest bios?
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February 10, 2012 6:42:16 PM

Idk.

I have never tried updating my board other than the initial install (built 12/25/2011).

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February 10, 2012 6:54:24 PM

Mister Gray said:
Why would the BIOS read so high?


In a word, SpeedStep.

To expand on that...the i5-2500K has SpeedStep technology built into it which will allow it to throttle to 1.6GHz when idling to lower its power consumption and ramp up to it's full speed when working (download CPU-Z and watch it in action). SpeedStep doesn't kick in until Windows boots, so when it's in BIOS the CPU is going full tilt...that's why it'll seem as if its hotter.

I used to use the Hyper-212, and I'd idle at between 30-32 deg C in a 700D chassis, with about 21-23 deg C ambient temps. Your reading of 28-30 deg C seems fine to me.
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February 10, 2012 7:21:25 PM

just a related side not on how low end the hyper 212+ is, i idle at right around 29-31 with a noctua nh-d14 and an i7 2600k @4.5 ghz......

point being, if you want to to an overclock at 4.5 or above return that cpu cooler. it wont keep your temps in a comfortable zone.
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February 10, 2012 7:35:21 PM

cbrunnem said:
just a related side not on how low end the hyper 212+ is, i idle at right around 29-31 with a noctua nh-d14 and an i7 2600k @4.5 ghz......

point being, if you want to to an overclock at 4.5 or above return that cpu cooler. it wont keep your temps in a comfortable zone.


I wouldn't consider the Hyper-212+ low end...it's actually one of the little gems out there that performs well above it's price point. I agree, there are better coolers for the higher OCs, but Asus also demonstrated that it was more than adequate for overclocking up to 4.6GHz with a single fan:

http://hardforum.com/showthread.php?t=1578110

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February 10, 2012 7:37:43 PM

diellur said:
I wouldn't consider the Hyper-212+ low end...it's actually one of the little gems out there that performs well above it's price point. I agree, there are better coolers for the higher OCs, but Asus also demonstrated that it was more than adequate for overclocking up to 4.6GHz with a single fan:

http://hardforum.com/showthread.php?t=1578110

im just speaking from experience here. ive had both the hyper 212 and a nh-d14 that i have now on my rig.

at 4.5 and the 212 i was seeing 80*c
now the the nh-d14 i see69*c max and can run lower voltages.

yes the 212 cools well but not at 4.5.
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February 10, 2012 7:47:46 PM

I've got to be honest...69 deg C with the NH-D14? That seems high to me. What voltage are you running at?

I used to have the Hyper-212+ before I got the H100 (still got it on my shelf as a back-up, as it happens), and at 4.5GHz I was nowhere near that temp...high 60s, IIRC.

I'm not flaming here, but I wonder if you have some airflow issues in your case?
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February 10, 2012 8:57:24 PM

diellur said:
I've got to be honest...69 deg C with the NH-D14? That seems high to me. What voltage are you running at?

I used to have the Hyper-212+ before I got the H100 (still got it on my shelf as a back-up, as it happens), and at 4.5GHz I was nowhere near that temp...high 60s, IIRC.

I'm not flaming here, but I wonder if you have some airflow issues in your case?


you got to keep in mind that i am running an i7 with hyperthreading. hyperthreading itself needs more voltage so you have to things in addition that adds more heat.

so an i7 has more heat because of hyperthreading and because hyperthreading needs more voltage to be stable.

i bet if it turned hyperthreading off i would get lower temps and voltage.

its 4.5 at 1.340 volts.

i know the temps are higher then some people report but right now its 23*c in my house and my chip needs a tad more volts then some.
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February 10, 2012 9:13:56 PM

The op has the i5 so you should give advice relative to his situation. I got my i5 to 4.7 before hitting a bit above 80C on the 212+ (antec 300 illusion stock fans on low, 1.35v). Temps are very dependent on roomtemp, in the summer I'll was idling in ~40c, now I'm ~30c in winter, roomtemp ~80F, ~70F respectively.
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February 10, 2012 9:54:18 PM

Holy crap what r u people running? Ibt??
My 2500k never goes higher then 60c at 4.8 ghz running prime small fft. On air.
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February 10, 2012 10:09:19 PM

k1114 said:
The op has the i5 so you should give advice relative to his situation. I got my i5 to 4.7 before hitting a bit above 80C on the 212+ (antec 300 illusion stock fans on low, 1.35v). Temps are very dependent on roomtemp, in the summer I'll was idling in ~40c, now I'm ~30c in winter, roomtemp ~80F, ~70F respectively.


the temp differences should be very similar though.
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February 10, 2012 11:06:10 PM

Large ffts, I prefer prime and render for days on end. You will notice large ffts stress it more and create more heat than small fft; only to be compounded by longer test times. You only tested for an hour didn't you?

Small fft is just not enough stress for a good stress test, you need to be on large or blend which does both, it's similar with ibt, normal is not enough, it needs to be on extreme.
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February 10, 2012 11:36:46 PM

Ibt is overrated. All it does is heats up ur cpu to insane temps. Small ffts actually will heat up cpu faster and to a higher temps then large or blend. And it's very usefull to check ur cpu and cache stability. Usually if u borderline on voltages it will give u an error. If it passes 15-20 min it's usually good to go. Sometimes people say blend failed after 8 hours. My thought is ur power grid will have spikes ones in a while and that will cause error.
Nevertheless those temps look too high.
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February 11, 2012 1:19:27 AM

Well Im assuming that an attempt at an overclock would be possible at this point yes? I have been hesitant to anything until I have read up enough. Any advice anyone could be willing to share. Thank you again for the replies. :D 
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February 11, 2012 1:35:44 AM

I would agree prime is better and I hate any synthetics but prime is just easy to stress test with. Large and blend still use the cache and that sentence sounds like it doesn't test cpu. ("And it's very useful to check ur cpu and cache stability.") Wouldn't you say it's very useful to check stability of everything being oc? There's a reason why it lets you change between large, small and blend.

20min test is why your temps are lower than everyone else (and roomtemp). Of course the longer you test the higher chance you will fail. Gaming is no where near as intensive as rendering so I would say an hour is fine but 20min is not enough. And I would still suggest blend because you want to test everything. Your power grid theory makes no sense, I won't go into the reasoning as long as you have a decent psu.

If you really think those temps are not normal; compare.
http://www.overclock.net/t/968053/official-the-sandy-st...
http://www.google.com/search?ix=seb&sourceid=chrome&ie=...

Load temps is what really matters anyways. Sb overclocks pretty simple, just change multiplier and vcore. You will probably want to stay below 72C and 1.35v in normal operation. Tom's uses 1.35 for safe long term use, many others go to 1.4-1.45 with safe temps and it will probably still last after 5+ years.
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February 11, 2012 1:40:10 AM

madchemist83 said:
Ibt is overrated. All it does is heats up ur cpu to insane temps. Small ffts actually will heat up cpu faster and to a higher temps then large or blend. And it's very usefull to check ur cpu and cache stability. Usually if u borderline on voltages it will give u an error. If it passes 15-20 min it's usually good to go. Sometimes people say blend failed after 8 hours. My thought is ur power grid will have spikes ones in a while and that will cause error.
Nevertheless those temps look too high.

I don't think of IBT as overrated. It tells me a worse-case-scenario of what temperature a CPU could potentially reach and lets me know stability status of my system a lot faster than Orthos or Prime ever did/will. There is a reason that IBT produces "insane temps" - it stresses your system more than just about any other program out there. Some people like to still use the tried and true, and I cannot fault that - use what you feel most comfortable with.

For reference purposes (I didn't see them posted), the I5 2500 specs per Intel are:
Max Tcase = 72.6* C
Max VCore = 1.52v
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February 11, 2012 3:20:49 AM

Mister Gray said:
Hello Everyone,

I have an issue with my CPU giving up and down ratings on SpeedFan. I have researched the issue and found numerous similar issues but nothing with an answer that reoccurs

Specs:
Case: CM HAF 922
CPU: I5 2500k
GPU: EVGA GTX580 3GB
MOBO:ASUS P8P67 Pro (B3 revision if that matters)
RAM:Corsair Vengance 8 GB
SSD: Intel 120GB (scary I know)
PSU: 750 Watts

I normally never see the temp budge from -60 C but if it goes into sleep mode it woill come back with a temp of 124 C..........Shut it off cut back on and normal again. This was with the stock cpu before, took off and reapplied (did not put more paste on). Followed by last nights project of swapping in a CM Hyper 212 and applying well enough Artic Silver and getting the same -60

Is there anyway I can fix this to read my temps?? I wish to try an overclock now that I possess a decent enough cooler.

Thanks for any replies :D 




I think there is something wrong with your motherboard. I am using i5 2500K OC'd to 4.7 GHZ idles at 37 deg celsius and at full load using prime95 it goes not more than 60 deg celsius. I used CM 212 hyper plus cooler. Motherboard is Biostar TZ68A+RCH.
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February 11, 2012 4:04:23 AM

Matt u full of crap. I thought the same thing but then I took an arrow to a knee ....
Ibt has nothing to do with stability. And trust me you will never reach those temps ... What do you mean worse case?
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February 11, 2012 4:07:58 AM

And you can't say one hour is enough. Honestly it heats up after 10 min. I ran for 10 min I got 59 on 4.8 ghz, then ran for hour an a half ... Still 59.
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February 11, 2012 11:19:44 AM

k1114 said:
I would agree prime is better and I hate any synthetics but prime is just easy to stress test with. Large and blend still use the cache and that sentence sounds like it doesn't test cpu. ("And it's very useful to check ur cpu and cache stability.") Wouldn't you say it's very useful to check stability of everything being oc? There's a reason why it lets you change between large, small and blend.

20min test is why your temps are lower than everyone else (and roomtemp). Of course the longer you test the higher chance you will fail. Gaming is no where near as intensive as rendering so I would say an hour is fine but 20min is not enough. And I would still suggest blend because you want to test everything. Your power grid theory makes no sense, I won't go into the reasoning as long as you have a decent psu.

If you really think those temps are not normal; compare.
http://www.overclock.net/t/968053/official-the-sandy-st...
http://www.google.com/search?ix=seb&sourceid=chrome&ie=...

Load temps is what really matters anyways. Sb overclocks pretty simple, just change multiplier and vcore. You will probably want to stay below 72C and 1.35v in normal operation. Tom's uses 1.35 for safe long term use, many others go to 1.4-1.45 with safe temps and it will probably still last after 5+ years.



I'm going to assume from the conversation at hand that it would be optimal to run Prime95 for an extended time before attempting to up the power. FFt's if you dont mind me asking refer to the measurement of processing power within a CPU (maybe I'm over thinking this)? Fast Fourier Transformation right
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February 11, 2012 1:52:40 PM

madchemist83 said:
Matt u full of crap. I thought the same thing but then I took an arrow to a knee ....
Ibt has nothing to do with stability. And trust me you will never reach those temps ... What do you mean worse case?

I'm open to what you have to say, but you lost a lot of credibility with the fodder "I took an arrow to a knee".......moving on.

I have had in the past where I have passed Prime for (as an example) four hours, failed on IBT on like the tenth pass (about 12 mins), but went on to fail Prime around hour five/six. I have also passed Prime for a full eight hours, but failed on IBT, ran with it anyway, but experienced random reboots from instability (rare enough, but I had a feeling why).
For *worst* case, most CPU-intensive games/apps I have run generally place my core temp in the 5*-15* C LESS range than what IBT will top out at. There are a few though that on occasion I have come as close as 5* to what IBT has produced. I know I will never reach what IBT stresses at, but I will (in this case), go ahead and overclock until I hit 73* C with IBT, then I know I will have a slight margin of safety. Conversely, with Prime and the same set of games above, I have actually ran hotter on some of them than what Prime has stressed at = *worst* case scenario win for IBT.

Maybe Prime has improved over time (not referring to when you needed an instance of Prime open for each core), but I'm not saying I won't use it, it's still relevant and a good tool. A true feeling of stability for me is to overclock with IBT for 20 passes using 75% RAM, then run Prime for no more than 12 hours using blend or large FFT's. Maybe you can enlighten me as to why IBT has nothing to do with stability instead of just making a claim.

Hope your knee feels better *sarcasm*
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February 11, 2012 4:47:14 PM

Madchemist was asking how to oc just 2 months ago and is still trying to get it right. Personally I don't trust anything he says, no offense, you're a good person but inexperienced with computers. Of course 10min will probably be the same as 1 hour for temps. If you insist on trying to help people you should be able to find the answer why.

As I said before I hate synthetics; the reason? They create unrealistic scenarios, good for testing but take it with a grain of salt. You can pass prime and ibt and still be unstable. FFT is not a measurement of processing power (that's flops). How stress tests works is giving the cpu a complex algorithm(math problem) which is what fft is and seeing if any errors in it's calculations occur as the software knows exactly what the answer should be. Stress tests in general give the worst case scenario as even in scientific research, it's not going to be constantly calculating such complex algorithms. We can debate prime vs ibt all day, use what you'd like.

You can run prime for like 20min while you're getting the optimal voltages but once you think you have it right, I suggest a blend overnight. I use offset for vcore so the voltage can lower at idle and raise during load.
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February 12, 2012 1:20:14 AM

That's true I don't have much experience overclocking. But I base my suggestions on personal experience.
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February 12, 2012 1:33:02 AM

I agree with you k1114 about synthetics. They are however, about the only controlled way we can stress test for stability. They unfortunately, like you pointed out, test, and retest an algorithm that is static rather than the preferred dynamic approach. Only true way to get results using the dynamic method is to test drive it in "the real world". Technically, if a setup passes all stress programs you throw at it (key being as many as possible here), you should feel confident that everyday use will uncover no issues. There is the very rare occasion that it may not though even after passing stress testing. In this case the only thing that can help you is recheck your settings and learn what each option in your BIOS is and means to be able to either fine-tune or narrow down to an inferior component.
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February 12, 2012 3:08:01 AM

Anyways, the op temp issue is resolved and he is looking into ocing. Guides were passed on already, we are waiting for results.
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February 12, 2012 10:14:32 AM

Best answer selected by Mister Gray.
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February 14, 2012 8:13:35 PM

Sorry for the delay everyone. So far haven't gotten a long game session to test the temps on but so far the temps have remained during a couple hours of general internet usage and netflix:

Core 1, 2: 30-32 C
Core 3, 4: 36-38 C

Bout to jump on some StarCraft 2 & Skyrim for a an hour or two and see where I stand.

So far have it at 4.5Ghz with voltage around 1.30 Thanks to k114 for the links and assistance
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February 20, 2012 5:33:12 PM

i can't get mine stable @ 4.5 under 1.38v. what mobo are you using mister?
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February 20, 2012 7:37:49 PM

zogg said:
i can't get mine stable @ 4.5 under 1.38v. what mobo are you using mister?

you just arent one of the lucky ones... you got a bad chip.
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