Thermal sensor issue i7-7700k?

[CK7]

I have a brand new build; EVERYTHING NEW. i7-7700k is running at stock speeds. I have the RAM set to XMP for DDR4-2666. Motherboard is Asus Maximus IX Hero Z270.

I have found that the i7-7700k reports a momentary (a second or less) temperature spike +25 > 35 degrees Celsius anytime a program is opened, a webpage is opened, a background app runs etc. The temperature blip cascades through the cores in random order; not the same every time. This causes my heatsink fan to constantly cycle up and down. Temperatures otherwise report as steady, normal increases. Peak temperature under Prime95 blend test is 71 degrees Celsius.

Attempted solutions:

I have re-installed my heatsink and thermal paste with no change.

I have tried to manually set my fan speed in the bios. The only setting that avoids this issue is setting the temperature / fan at a constant (and loud) 80-100%. I've tried PWM and DC mode.

I have found a few user reports elsewhere on the web, all reasoning that it's just the way it is. I don't accept that. Opening a folder or browser should not spike temps +30 degrees. Not only is the fan cycling annoying, it puts undue stress on my fan; possibly shortening its lifespan.

What's the answer, if any? RMA?

[idata]

Well that's off the wall entirely. Rendering a 22 minute video using Camtasia Studio I get a max temperature of 77C. Camtasia uses AVX instructions, so it's a hot application (presumably so does Premier Pro.

BUT ... I'm running the CPU at 4.8GHz, Cache at 4.5GHz and memory at 3200MHz, while you are running at stock. And I'm not happy with these temperatures. I'm not surprised that Intel have offered to replace your CPU ... but I agree with you that it would be better to wait for a response from them (which is what I'm doing).

What sort of cooler do you have btw?

[ACozo]

My cooler is a Scythe IORI SCIOR-1000.

[idata]

For heavy applications like Premier Pro you may want to consider a cooler like the NZXT Kraken X62, or the Corsair H110i. If you don't have space inside your box you could fit it on the outside, most likely. As this is a new build you should be able to return the Scythe, as it clearly isn't doing the job.

I use a Kraken X62 myself and I'm very pleased with it: it's very quiet and has excellent fan controls.

[NHatz]

Pretty wierd thing that we've paid 400 euro and we have those problems.

Intel, before you make a ''bad'' name to your name and lose a lot of customers by moving to AMD fix that soon .

my specs are :

i7 7700k

Msi z270 gaming m7

Rmx 850w gold

2x 8gb Gskill TridentZ 3000Mhz

Corsair mp500 m.2

ssd samsung 950 pro

hdd 1tb black

Msi Gtx 1070

I hope you won't have to replace all those cpu's since its a problem for a lot of people with different motherboards and specs in general .

Give us a windows update or a fix by bios update before massive replace take place.

[ACozo]

And what about your temperatures under full load?

[ASušt]

I'm already confused, that buying a 100+$ cooler is becoming a normal thing.

There is no need to game. As all of us know, CPU can easily spike even in some document work/mail checking/calculator launching etc.

Yes, I bought an expensive cooler, because I'm going to play on my PC, but do common users even think about spending so much (hello to AIO liquid coolers) money on a cooler, that, in their opinion just makes noice just like stock fan does?

Did someone have an idea, that Intel are silent, because they are working on our problem?

If they have decieded to tell us, that it's all ok, why would they wait for so long?

And yes, don't think i'll ever by intel again if they won't care...

p.s can't wait for them to fix/replace the CPU....

[idata]

Well Camtasia does give a full load (temp 77C for 20-min render). But with Prime95 small FFT I'm getting 79C after 10mins ... getting a bit too hot for comfort, but still a lot cooler than what you are getting.

[ACozo]

So what are you doing here if your temperatures are ok. I asked the question to Balourdos.

[idata]

I have also bought a new setup of the I7-7700k and a ASRock Gaming K6 MB and coming from the I7-4790k i watch the temps when i first turn the system on for a wile after i re paste and i will have to say that the 4790k oc diden't run crazy temps but i been watching it and had the system up for a little over a month now with no oc and for like the last week or so i been having a problem with a game that will just keep crashing and that's when i noticed that my temps will go more all over the place then normal and, i use core temp 1.7 for temp reading, the Frequency is completely all over the place also. today is the second time the game acted up and i looked and the cpu is doing it again so i got the info and attaching the file. i don't know if it dose this because the temps have been getting higher or if it just starts messing with the Frequency and the temps are going higher because of that. i did notice that temps where in 72c lastnight before i went to bed and when i got up the pc was going crazy. when its in this state stuff will crash that i use.

i hope this helps, i also hope someone can tell me if this is a problem with the cpu and if i should try to send it in. has anyone had the same thing happen?

[NHatz]

My temps are not ok.

Since while idle I get temps from 29-30 to 62-55-54-51 and back to 30.

Also , in full load I get around 65-71c with an AIO.

[TGrab1]

Balourdos wrote:

My temps are not ok.

Since while idle I get temps from 29-30 to 62-55-54-51 and back to 30.

Also , in full load I get around 65-71c with an AIO.

These temps are exactly what you SHOULD be seeing under full load. I was seeing 65-72C full load depending on test on custom water pre-delid.

So these temps are actually good for this chip. You still have 30C of headroom!

As to the spikes damaging the chip... Chances are you will not damage your chip and IF for some freak reason it did die... you have a 3 year warranty!

I ran a 2600k for what 6 years at higher than "safe" voltages with temps being actually pretty decent. That chip is actually still overclocked, still functioning in another machine. So if the safe temp for these chips is 100c... i would assume it running up to 90C will be fine... If you do see some silicon degrading it will be far after the warranty is expired anyways and chances are most of us will have moved on to 8+ core cpu's by then. So try to look at the bigger picture with all these doom and gloom posts I keep seeing.

Intel has done test and are confident this chip is fine up to 100C without concern. If they are wrong they will replace it!

[SShah28]

7700k have a very inefficient heat sink application. Some people say it is because it wasn't sealed very well, some other say the thermal paste is low quality. Whatever the issue is, when people delid this cpu, they can overclock it at least 100MHz more with higher heat dissipation.I have the same problem right now. my CPU can run very fast and I am happy. But when it runs at full load temperatures increase to 80+ degrees meanwhile my water cooler shows 30 degrees at heat sink. Clearly the heat sink is ineffective when you have 50 degrees of delta from core to cooler. I am stressing now because cpu running so hot runs my fans at 2700rpm super noisy without any effect. Eventually my expensive fans and cpu all die together. Because cpu remains hot and fans work hard for nothing. The solution is to delid. Which is 1. dangerous and 2. can void cpu warranty "iligally under us law". yes, intel can't void your warranty if you delid your cpu safely and don't damage it during process. I would like to see intel either solve this problem so people don't have to play with heatsink or at least allow people do the delid. But I do believe your warranty is voided if you break your cpu during unsafe delid, like I see in some youtube videos with hammers and wood planks.

[idata]

Has anyone tried to exchange their chip and saw the spikes disappear ? I read the whole thread and couldn't figure out if an exchange has ever been successful.

I bought my 7700k yesterday (using my same previous Asus maximum Z170 board), upgrading from a Skylake i3 and immediately noticed the constant rapid spikes in temps along with the fan spinning up and down in response to the drastic temp changes. (goes from 25-30 to 50-60 when doing mundane windows tasks)

I'm not super concerned about the longevity of the chip considering that my temps have been manageable even in games. I'm currently running with stock settings and I'm mostly annoyed by the noise level coming from the fan constantly spiking.

Since I bought my chip yesterday, I have the option to exchange it, but if this behavior is a 'feature' of this chip in its current state I'd rather save myself the trouble and cross my finger for a BIOS fix. It's definitely sad that this thread was opened for over 2 months and Intel has not provided anything concrete about this issue since then.

Here's what my it looks like when simply writing in this thread an checking my emails :

[idata]

I'm afraid that this is a 'feature' of these chips. I'm holding off to see what Intel proposes, but if they do not come up with a solution I will be returning my CPU.

But it would be worth opening a support case. Intel will probably tell you that the response will be posted on this thread, so is it OK to close the support case? ... I suggest you say that you do not want to close it because of the very long time that Intel is taking to respond. This is what I have done.

[TGrab1]

Honestly, as much as people are getting worked up over this.. i just haven't noticed it being that terrible. Even before I delidded it wasn't that big of a deal... then again I was running a custom loop and it is pretty silent even when fans kick up in speed.

Now after delid you will still see spikes but they are much smaller and my temps at the 5ghz im running now kick up to 65C MAX doing avx2 on p95. So I can live with that as my temps in games are in the 45-50C range.

I think the spikes are pretty normal for any chips with different states and on top of that EIST adds a few more as well. So it is normal to see spikes as the cores go from 0 - 100 or 0-65 or whatever % they use to complete a task quickly.

I mean these browser spikes for example... you are looking at a page that is loaded and rendered = 0 usage now... then you change pages the CPU kicks up to 100% but it only took a fraction of a second to complete that task and now goes back to 0. Those are the spikes you are seeing as the cpu tries to complete the task ASAP. You would see this on any chip with these features.

The thing that is concerning is the high temps on these chips due to various reasons. So these spikes would not concern anyone if you were only spiking from 30c - 42c etc... but since these chips are hot and the heat dissipation between DIE-IHS-Block are poor you see massive and instant temp spikes because the heat is generated very quickly and isn't able to start being dissipated to the cooling solution as fast.. So you see a spike from 30c - 65-70C. which now is VERY visible to anyone looking at a graph.

I still feel the issue here is not related to spikes over usage. It is the poor heat transference from DIE-IHS-Cooling solution. If all of these chips were replaced with say one that was delidded i am 99% sure this thread would not exist. It would operate just like previous versions and the high temps would be a thing of the past. The spikes would continue as that is part of the architecture, but the extreme min-max of them would be solved

[idata]

While it's not terrible on my end either, it's mostly annoying from a noise standpoint - I will most likely use a custom fan curve to mitigate this for now.

I have not seen spikes like this on a i5 6600k or i3 6300 using the exact same motherboard and cooling setup. The temp increase was much more gradual on those chips as load increased. The fact that the CPU goes from 25c to 55c in one second and jumps back down to 25c the next second leads to some of the annoying side effects that people are pointing out in this thread.

Probably fair to say that we're hoping that this is a sensor issue that can be mitigated with a bios/software release from intel...

[idata]

Yes, I completely agree with that. I'm personally not at all concerned by the spikes ... after all, as you say, if the CPU responds to a sudden load then the power drawn will increase sharply and so will the temperature. My concern is the size of the spikes (I typically see 40C spikes), and also the very poor overclocking ability. I can just about go to 5GHz, but at that my temperatures on Prime95 small FFT goes above 90C. At 4.9GHz the temperatures are still up to 85C. Considering that 4.9GHz is less than a 9% overclock, that's pretty pathetic, especially as I have a pretty good cooler. I would have expected to be able to go to 5.2 or 5.3 without starting a fire ...

Hopefully Intel will, at the very least, do a selective recall for those of us who want it, and replace the CPUs with ones that have a proper heat transfer solution.

For those who have a problem with fans ramping up and down ... well surely this can be adjusted in the BIOS or by using an external fan controller. It might be good for people with this problem to start a separate topic to deal with the fan issue. I'm saying this because I do use an external fan controller (the NZXT CAM software) and I have zero fan problem ... in fact my workstation is so silent I don't know it's on.

[MW1]

For those who have a problem with fans ramping up and down ... well surely this can be adjusted in the BIOS or by using an external fan controller. It might be good for people with this problem to start a separate topic to deal with the fan issue. I'm saying this because I do use an external fan controller (the NZXT CAM software) and I have zero fan problem ... in fact my workstation is so silent I don't know it's on.

Yes it can! And this applies to anyone that is annoyed by the systems fans ramping up and down in response to temp spikes. In the Asus UEFI [and I would think this applies to other manufacturers too] you will find "fan spin up delay" and "fan spin down delay". You will find the same within Asus Fan Xpert.

I have my delay set to 12 seconds. You may still hear a slight increase in fan RPM, but that should help a lot.

[ASušt]

I have spoken about it earlier, even such a big delay (12s) does not help completely.

And I totaly agree that we (end users) should not have to tune anything! Intel said that we should not OC, so they should give us cpu's that don't require any tweaking for not spiking/overheating.

A high-end MOBO allows user to tweak voltage, clocks and fan curves, but what about 50$ board? That's b*ll$*!t in my opinion.

Sounds ridiculous that everyone have to buy a custom water loop and a separate fan controller now

P.S just sent my cpu out there....will wait for the replacement. Wish me luck.

[AKios]

Good luck buddy i hope everything goes well :-)

[MW1]

I have spoken about it earlier, even such a big delay (12s) does not help completely.

Not "completely" you say... so it has helped to a degree.

Have have you tried 15 seconds?

And I totaly agree that we (end users) should not have to tune anything! Intel said that we should not OC, so they should give us cpu's that don't require any tweaking for not spiking/overheating.

Intel haven't at all said that we "shouldn't" overclock. They have just said they don't "recommended" it. This is not new, Intel have always had that stance. Look at it in reverse, if Intel recommended, in other words "encouraged" us to overclock, they would have a plethora of less than experienced individuals diving in and overclocking without a clue what they were doing. They would then have to honour the inevitable RMA claims for not just the CPU, but for associated components too.

However... Intel recognize that we experienced enthusiasts like to overclock, so they provide "K" series CPU's so we can do just that. In addition, Intel provide the "Performance Tuning Plan", that warranties your CPU against overclocking failure. Damage your CPU overclocking and Intel send you a new one. So clearly intel accept that we overclock, but cant for legal reasons "encourage" it.

From the Performance Tuning plan site...

Does this mean that Intel is supporting or encouraging overclocking? 

No. While we will, under the Plan, replace an eligible processor that fails while running outside of Intel's http://www.intel.com/content/www/us/en/processors/core/CoreTechnicalResources.html specifications, we will not provide any assistance with configuration, data recovery, failure of associated parts, or any other activities or issues associated with the processor or system resulting from overclocking or otherwise running outside of Intel's published specifications.Sounds ridiculous that everyone have to buy a custom water loop and a separate fan controller now

They don't! The temp spikes you see are VERY brief. Brief temp spikes aren't dangerous, only sustained high temps are.