Is It time to delid 7700k or for RMA

[sloke123]

Hi,
Recently I have noticed that cpu gets hot while playing games( temps around 80~82°c). I cleaned the fans fans motherboard, cooler and changed the thermal paste but the results were same. My PC specs are
1. Intel Core i7 7700k( @ stock Frequency)
2. Corsair H80i
3. Asus Maximus IX Hero
4. Gskill Ripjaws V 16 GB(2x8 GB)
5. Gigabye GTX 980 Ti G1 Gaming
6. Corsair RM750x
7. Corsair Carbide 400R
8. 5 120mm case fans ( two at front, two at top, one at bottom)
I did some test which I like to share-
First test was @32°c room temperature, case fans are @ 1200 rpm, Cooler Fans @ 2600 rpm. CPU temp went to 90°c within a minute.

https://drive.google.com/open?id=11epNBEqJ1ESHlknMwgwlunerMDQ1YsEm

Second test was @25°c room temperature with AC on, case fans are @ 1200 rpm, cooler fans @ 2600 rpm.CPU temp reached 86°c after 3 minutes.

https://drive.google.com/open?id=1R5dsH80ZWCzy6UrNtC8CoFaypNXTuW0G

I did a Prime95(v26.6) test but cpu temp went 90°c immediately, so I had to stop the test.
My question is,
1. Should I delid my CPU to get better result?
2. Or something wrong with my CPU( It has 2 years warranty left)
P.S: My idle temp on first case 32~34°c and second case 29~31°c

 

[Barty1884]

I'd remount the CPU cooler first of all, and ensure the pump is connected/running.

 

[sloke123]

I'd remount the CPU cooler first of all, and ensure the pump is connected/running.

I checked it already

 

[mrfungi]

7700k has been known for running hot and having temperature spikes even when popping open chrome/firefox etc. Intel have said these spikes are normal, but obviously running at such high temps and even just having those spikes doesn't sit well with some people. Are these temperatures spikes or are they 90c all the way through the test? Run the tests and keep an eye on the temps, check whether they're consistent or not.

Some have reported updating their BIOS to the latest version helped as well as upgrading liquid cooling system. Delidding the chip helped too. Friend of mine delidded his as he was fed up with the temperature issue. Bear in mind you void your warranty by delidding.

 

[sloke123]

7700k has been known for running hot and having temperature spikes even when popping open chrome/firefox etc. Intel have said these spikes are normal, but obviously running at such high temps and even just having those spikes doesn't sit well with some people. Are these temperatures spikes or are they 90c all the way through the test? Run the tests and keep an eye on the temps, check whether they're consistent or not.

Some have reported updating their BIOS to the latest version helped as well as upgrading liquid cooling system. Delidding the chip helped too. Friend of mine delidded his as he was fed up with the temperature issue. Bear in mind you void your warranty by delidding.

No, they are not all the way through the 20 min test. Avg temp around 85~86°c through all the test.

And what was the experience after deliding the cpu, please share

 

[mrfungi]

And you're getting these temps on stock clocks, no overclocking?

 

[Eximo]

h80i and a stock 7700k, those seem reasonable temperatures. A full synthetic load is not terribly realistic.

I used an h80i on my unmodified i7-4770k that I overclocked to 4.3Ghz @ 1.29 volts temps were in the low 70s on occasion.

What is your CPU core voltage under a full load? Many motherboard's defaults are too high, and LLC can push it well past reasonable values. At stock I would expect something like 1.25-1.3 volts, but I recall mine booted up at 1.35 for the first time.

A quick delid with standard thermal paste did wonders for me, but I had one core that was nearly 10C hotter than the others.One of these days I might give liquid metal a try, but highest temps I see now are 81C or so.

 

[sloke123]

h80i and a stock 7700k, those seem reasonable temperatures. A full synthetic load is not terribly realistic.

I used an h80i on my unmodified i7-4770k that I overclocked to 4.3Ghz @ 1.29 volts

What is your CPU core voltage under a full load? Many motherboard's defaults are too high, and LLC can push it well past reasonable values. At stock I would expect something like 1.25-1.3 volts, but I recall mine booted up at 1.35 for the first time.

A quick delid with standard thermal paste did wonders for me, but I had one core that was nearly 10C hotter than the others.One of these days I might give liquid metal a try, but highest temps I see now are 81C or so.

The voltage varies from 1.25x~1.28x.

 

[mrfungi]

My friend who delidded his 7700k reported a 15-20c drop in temperatures. Needless to say it was impressive, but I'd only do it as a last resort from exhausting other options. You can buy a delidding kit too, apparently it makes the process easier.

 

[sloke123]

And you're getting these temps on stock clocks, no overclocking?

yes. I'm getting this at stock

 

[Eximo]

h80i and a stock 7700k, those seem reasonable temperatures. A full synthetic load is not terribly realistic.

I used an h80i on my unmodified i7-4770k that I overclocked to 4.3Ghz @ 1.29 volts

What is your CPU core voltage under a full load? Many motherboard's defaults are too high, and LLC can push it well past reasonable values. At stock I would expect something like 1.25-1.3 volts, but I recall mine booted up at 1.35 for the first time.

A quick delid with standard thermal paste did wonders for me, but I had one core that was nearly 10C hotter than the others.One of these days I might give liquid metal a try, but highest temps I see now are 81C or so.

The voltage varies from 1.25x~1.28x.

That seems reasonable, you could always try to go lower with an offset and see if the system is stable. If you are only seeing 80C peaks you are still well away from throttling and well within the operating temps of the CPU.

If you are not liking the noise an H80i makes at that speed, you can always adjust the fan curve,or replace the fans, stock Corsair are pretty loud.

 

[sloke123]

h80i and a stock 7700k, those seem reasonable temperatures. A full synthetic load is not terribly realistic.

I used an h80i on my unmodified i7-4770k that I overclocked to 4.3Ghz @ 1.29 volts

What is your CPU core voltage under a full load? Many motherboard's defaults are too high, and LLC can push it well past reasonable values. At stock I would expect something like 1.25-1.3 volts, but I recall mine booted up at 1.35 for the first time.

A quick delid with standard thermal paste did wonders for me, but I had one core that was nearly 10C hotter than the others.One of these days I might give liquid metal a try, but highest temps I see now are 81C or so.

The voltage varies from 1.25x~1.28x.

That seems reasonable, you could always try to go lower with an offset and see if the system is stable. If you are only seeing 80C peaks you are still well away from throttling and well within the operating temps of the CPU.

If you are not liking the noise an H80i makes at that speed, you can always adjust the fan curve,or replace the fans, stock Corsair are pretty loud.

You are right I hate that noise, but i have no choice. If I lower the rpm, the temperature goes up significantly.

 

[sloke123]

My friend who delidded his 7700k reported a 15-20c drop in temperatures. Needless to say it was impressive, but I'd only do it as a last resort from exhausting other options. You can buy a delidding kit too, apparently it makes the process easier.

Wow, I didn't expect that much.

 

[mrfungi]

Yup. He has one of those open air cases and runs air cooling. He got fed up with the temps so he ended up buying a delidding kit. Now he's a very happy bunny with temps that won't go over 60c. He does live in a colder climate, however, so your temps might differ from his but delidding certainly has a proven record in decreasing temps considerably for those who do it.

You just have to be careful and follow the instructions properly. If you have a very old cpu you could practice on that.

 

[sloke123]

Yup. He has one of those open air cases and runs air cooling. He got fed up with the temps so he ended up buying a delidding kit. Now he's a very happy bunny with temps that won't go over 60c. He does live in a colder climate, however, so your temps might differ from his but delidding certainly has a proven record in decreasing temps considerably for those who do it.

You just have to be careful and follow the instructions properly. If you have a very old cpu you could practice on that.

Thanks for sharing this.

 

[mrfungi]

No worries. Hope we've helped!

Good luck!

 

[Eximo]

My "kit" included a loose razor blade and about ten minutes. Given the Skylake/Kabylake design with no top mounted surface mount components it is very simple to pop the top off.

A little scraping of the silicone adhesive off the heat spreader and substrate and cleaning up Intel's thermal compound. Then an application of thermal grizzly hydronauut (normal paste) To me this just cleaned up a possible bubble or a surface misalignment. I only had the one problem core that would regularly hit 90C (5Ghz 1.4 volts) (No issues at normal voltages, but I've heard many people complain of similar temps at stock)

15-20C difference is going to be liquid metal. If I had a desktop mounted motherboard I would be more inclined to try it, but with a standard tower I fear gravity would have eventually caused me a problem.

 

[mdd1963]

temps for reference purposes on :
Z270A Prime/7700K/Noctua NH-D15 with all 4 cores at 4.5 GHz..

Ambient - 21C

Idle -- 29C
Battlefield 1 - 63C
AIDA64 stress- 72C
Prime95/small FFT (ver 28.10)- 77C

These temps are inside a closed case, Corsair 100R midtower, fan set to medium, with only one Noctua fan attached to CPU sink in between two tower stacks, the other fan lacked clearnance due to case width issues, but, simply used other Noctua fan as case intake about 4" fiurther away, still super quiet, and works just great, ample airflow

 

[CompuTronix]

sloke123,

To help put things into perspective, the following is from the Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

You might want to give it a read.


" ... Section 4 - Core Temperature

... Here's the operating range for Core temperature:

Core temperatures above 85°C aren't recommended.

Core temperatures below 80°C are preferred.

Core temperatures increase and decrease with Ambient temperature.

Idle temperatures below 25°C are generally due to Ambient temperatures below 22°C. ... "


" ... Section 9 - The TIM Problem

Core i 3rd Generation and later processors are very sensitive to small increases in voltage and frequency, and are more difficult to cool than 2nd Generation and earlier processors, so cooling is crucial. Here's why:

(1) 3rd Generation and later processors are "small Die", which have significantly less surface area in contact with the Integrated Heat Spreader (IHS), than "large Die" 2nd Generation and earlier processors.

(2) 3rd Generation and later processors have more transistors densely packed into their small Die than large Die 2nd Generation and earlier processors.

(3) 3rd Generation and later mainstream processors use Thermal Interface Material (TIM) between the Die and IHS, which has relatively poor thermal conductivity. "Indium" solder, which has good thermal conductivity, was instead used in 2nd Generation and earlier processors.

Since the material that seals the perimeter of the IHS to the Substrate is slightly too thick, this tends to increase the space between the Die and IHS, which can also cause the TIM to compress unevenly. The effect is increased Core temperatures, with some processors showing wide deviations between Cores, or one Core which runs much hotter than it's neighbors.

This has encouraged some overclockers to "delid" or remove their processor's IHS and replace Intel's TIM with liquid metal TIM, allowing thermal conductivity much closer to Indium solder. Typical results are dramatically lower Core temperatures with less deviation between Cores.

Beware that delidding will void your warranty, and if not performed carefully, can damage or destroy your processor.

Rather than delid with the risky razor blade method, you can safely delid with a "delidding tool" such as the Rockit 88 - https://rockitcool.myshopify.com/

Silicon Lottery - https://siliconlottery.com/collections/all/products/delid - is a company that tests, bins and sells overclocked, delidded "K" CPU's. They also offer professional delidding services, and give the following figures on how much Core temperatures at 100% workload are improved by delidding:

8th Generation ... Coffee Lake - 12° to 25°C
7th Generation ... Kaby Lake X - 12° to 25°C
7th Generation ... Kaby Lake - 12° to 25°C
6th Generation ... Skylake X - 7°C to 20°C
6th Generation ... Skylake - 8°C to 18°C
5th Generation ... Broadwell - 8°C to 18°C
4th Generation ... Devil's Canyon - 7°C to 15°C
4th Generation ... Haswell - 10°C to 25°C
3rd Generation ... Ivy Bridge - 10°C to 25°C

To illustrate the scope of this problem, thermal characteristics among soldered and TIM’d processors are compared below:

Core temperatures on earlier processors with Indium solder between the Die and IHS are consistently within 5°C above IHS temperature, which indicates good thermal conductivity. However, Core temperatures on later Generations with TIM between the Die and IHS vary up to 25°C above IHS temperature, which indicates relatively poor thermal conductivity and uniformity.

Note: Intel uses engineering samples with soldered Integrated Heat Spreaders for testing and developing specifications. ... "


I've been delidding since 3rd Generation Ivy Bridge, and can confirm that a decrease in Core temperatures of 20°C is typical.

If you'd rather not purchase a delidding tool or perform the delid yourself, then you can send your processor to Silicon Lottery where they'll professionally delid it for you.

CT

 

[R0GG]

Hi, excuse my ignorance but I read in few articles that delidding CPU would shorten it's life expectancy and the material used by intel is optimized for heat distribution and of an Optimal physical and chemical properties that avoids cracks and other flaws in the dissipation material that occur with specific variations of temperatures, I will try to find the actual article again for discussion, thanks.

 

[CompuTronix]

The Truth about CPU Soldering - http://overclocking.guide/the-truth-about-cpu-soldering/

 

[R0GG]

The Truth about CPU Soldering - http://overclocking.guide/the-truth-about-cpu-soldering/

Right on, thank you for the link 😀

 

[sloke123]

Halloo guys,
I'm very much sorry for my belated reply . It is year ending time, there is a lot of work pressure in my office.
Anyway, I bought Cool Laboratory Liquid Ultra, 3D printed delid tool, and Thermaltake Core P5 open air PC Case.

I made a cooler bracket also, coz my cooler's tube length is too short.

I delided the cpu and apply the CLU in between the CPU Die and IHS. Didn't use ant glue to relid it. Just use the CPU retention bracket that comes with the motherboard..

After a few minutes, I did a stress test and the result was astonishing. I didn't expect that.
Here is screenshot of 20 minutes stress test

Cpu Temp never went over 75°c.
Thank you all for your valuable suggestions.

 

[mdd1963]

The H80 appears to be equipped with a rather smallish radiator; I"d not be expecting only 64C max temps......; if your delid got you 75C, prob as good as can be hoped for, enjoy

 

[R0GG]

I just got a 7700k and it runs at 28 idle at stock on TT water3 360 rad with fans at 600 rpm ! (TT core P3 open case, no side panel), did not run any test yet though, tried dirt 3 for half an hour and temps did not go beyond 34.