tecto

question to i7-7700k users - what is your max core temp during flight ?

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I have a question to i7-7700k users. Could you please tell me what temperatures you have during the flight? Please also tell if you have your CPU overclocked and what cooler you have on board.

When I stress my not overclocked i7-7700k by CPU-Z software it gets ~65 deg C max. However when I run P3D v4.1 it has around 80-85 (peak) deg C during whole flight.
It's still below safe temp of 100 deg C but in spite of all I think it's too high. 

When I overclocked it to 4.9 GHz I've noticed that the temperature increased to 90-95 (peak) deg C. I think I should consider better cooler for sure, however on the other hand I read some articles with the conclusion that i7-7700k has the well-known overheating issue.

So how it looks on your side?

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Hi...

My 7700K is still in its packaging along with my Z270 mobo...

That said - yeah - 90 to 95 sounds a bit high for my liking...

On my 2700K@4.7Ghz on a Noctua - I'm running 80 to 84 under full load for five years without any adverse affects... I don't think I'd go much hotter...

Also - posting to bookmark as I'll be setting the aforementioned 7700K up in the very near future...

:wink:

Regards,
Scott

 

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I have my 7700K OC to 4.8. Watercooling NZXT Kraken X52. Max temp I have seen is around 80C.

 

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Don't know if this is any help, cus I don't have P3D installed at the moment.  I'm 4.9 OC, with corsair H110-I radiator cpu cooler. I did a stress cpu multi thread (8) with cpuz.  Never got over 74 degrees.  I ran DCS over heavy scenery in Vegas, got up to 64 degrees.  At rest 30 dgrees.  I'm not much of a computer guy, so I hope this helps.

 

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7700k OCd to 4.8, HT is on. I have a cheap H55 cooler but I replaced the fan with a Noctau A14 3000 industrial and set a profile to wind out the fan as temps rise. It can get a bit noisy when simming, but my speakers are drown out the fan and temps never exceed 75C.

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1 hour ago, tecto said:

I have a question to i7-7700k users. Could you please tell me what temperatures you have during the flight? Please also tell if you have your CPU overclocked and what cooler you have on board.

When I stress my not overclocked i7-7700k by CPU-Z software it gets ~65 deg C max. However when I run P3D v4.1 it has around 80-85 (peak) deg C during whole flight.
It's still below safe temp of 100 deg C but in spite of all I think it's too high. 

When I overclocked it to 4.9 GHz I've noticed that the temperature increased to 90-95 (peak) deg C. I think I should consider better cooler for sure, however on the other hand I read some articles with the conclusion that i7-7700k has the well-known overheating issue.

So how it looks on your side?

Way too high, 80 deg without OC means that you have a cooling problem.

Check you have applied a good thermal paste, I would recommend replacing it with thermal grizzly.

Also check your fans are operating properly and that you have applied the correct pressure between your Fan cooler and your CPU.

Simbol 

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I agree with simbol - if you're getting temps that high without clocking, your thermal solution is not working properly.

 

Vic

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OC'd at 4.7 temps are running in the high 70's with heavy use. I have a good  big case - Thermaltake Core V71 Case, big fans two in front,  1 in back plus a Corsair H100i v2 liquid cooler on the top. Lot's of air flow. With not OC'd you've got ventilation issues and heat issues  and your OC'd is too high. You don't say what kind of case you have or cooler. Do you have a fan on your PSU? Does your card have one or two fans. They're blowing warm air into your case and so ventilation is crucial.

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Between 60-70c @ 4.8Ghz with Noctua NH-D15S Air Cooler. My GF1080TI Founders Edition usually gets warmer...

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3 hours ago, tgcbraun said:

Between 60-70c @ 4.8Ghz with Noctua NH-D15S Air Cooler. My GF1080TI Founders Edition usually gets warmer...

I'm seeing about the same. 

blaustern

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OC to 4.8 GHz on high-end air.  See about 70-80C under load with P3D.  Didn’t get that great of a chip in the silicon lottery.  Very occasional spike to 82-84 but have tweaked BIOS and P3D settings to stay under 85C.

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One core can reach 101c.  Not worried as these babies can run way above that.  Just like the space shuttle tiles.

Laugh'n out loud

bs

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7700K at 4.8Ghz with HT on. H100i AIO and temps anywhere between 75-85C depending on ambient.

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2 hours ago, bean_sprout said:

One core can reach 101c.  Not worried as these babies can run way above that.  Just like the space shuttle tiles.

Laugh'n out loud

bs

According to Intel specs the Tjunction on the 7700 is 100C - that is MAX and it will considerably shorten the life of your CPU if you run it up there for any length of time. Heat is what destroys CPU's so anything you can do to keep the temps down will be better for the CPU. Not to mention that most will throttle down when temps get close to Tjunction so you also lose performance.

Just because the CPU doesn't explode when you get it that hot doesn't mean it is ok.

For a margin of safety on the 7700k I would recommend temps no higher than 85C for any extended use.

My system with a delidded CPU at 5ghz runs stress tests maxed around 60. During flight around 55C

Vic

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Mine is running at 4.7 with a Noctua NH-U12S air cooler.

Running P3DV4, mine runs between 65-75c & never has instability issues.

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14 hours ago, simbol said:

Way too high, 80 deg without OC means that you have a cooling problem.

 

No, not with Skylake.

I run my 6600K undervolted @ stock speed and still see temps between 70 and 75°C in P3D using a 240 AiO water cooler!

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16 minutes ago, swiesma said:

No, not with Skylake.

I run my 6600K undervolted @ stock speed and still see temps between 70 and 75°C in P3D using a 240 AiO water cooler!

Then you have a problem too as an undervolted CPU should give you even lower temps as people here that are OC.

My I6600k max temp was 55 at stock speed under maximum load with prime95, now I have delid it and OC it to 4.6Ghz with max temps of 68-70 under prime and 55 under PD3V4.

Yes I know it is delided now, but prior to deliding it was hitting 84c at 4.6Ghz under prime95, which in comparison with yours that is undervolted is still much better.

So I think your temps are abnormal.

Simbol 

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Thank you for all replies. Now I have some more background. I definitely have to look at my cooling capabilities.

However, please watch this video and tell me what you think.

This guy has a liquid cooling on his i7-7700k, nevertheless CPU reaches 91 deg C.

Regading thermal paste - I'm using this: Thermaltake TG-7 Extreme Performance
https://www.amazon.com/Thermaltake-Extreme-Performance-Heatsink-CL-O004-GROSGM/dp/B00O5VX6O2

Do you think it's good or not?

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Hi...

My take - paste is paste - probably most use the same stuff... Watch a video on how to apply it - most say a pea sized blob on the center of the CPU is adequate...

Regards,
Scott

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43 minutes ago, tecto said:

This guy has a liquid cooling on his i7-7700k, nevertheless CPU reaches 91 deg C.

Regading thermal paste - I'm using this: Thermaltake TG-7 Extreme Performance
https://www.amazon.com/Thermaltake-Extreme-Performance-Heatsink-CL-O004-GROSGM/dp/B00O5VX6O2

Do you think it's good or not?

The guy in the video overclocked his i7-7700k from 4.2ghz (which is the base clock) to 4.8Ghz, that is why his CPU is running very hot, it is a well known issue that 7700K and 8800K cpu series run very very hot when overclocked and it is recommended to delid these CPUs if you wish to reach 4.8GHz or above in order to keep the temps down.

If you are not overclocking to such levels you will be fine, I would recommend this thermal paste: http://www.thermal-grizzly.com/en/products/16-kryonaut-en, the issue with cheap thermal compounds is that they will solidify faster over time at higher temperatures, this will force you to replace the compound again in order to keep the performance of your CPU optimal.

Best Regards,
Simbol 

 

 

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1 hour ago, simbol said:

The guy in the video overclocked his i7-7700k from 4.2ghz (which is the base clock) to 4.8Ghz, that is why his CPU is running very hot, it is a well known issue that 7700K and 8800K cpu series run very very hot when overclocked and it is recommended to delid these CPUs if you wish to reach 4.8GHz or above in order to keep the temps down.

If you are not overclocking to such levels you will be fine, I would recommend this thermal paste: http://www.thermal-grizzly.com/en/products/16-kryonaut-en, the issue with cheap thermal compounds is that they will solidify faster over time at higher temperatures, this will force you to replace the compound again in order to keep the performance of your CPU optimal.

Best Regards,
Simbol 

 

 

Yes I heard about Thermal Grizzly Kryounaut - I'm going to buy this today and try.
I've noticed that this TG-7 thermal paste has a thermal conductivity of 3.3 W/m-k, while Thermal Grizzly has 12.5 W/m-k. This is quite significant difference - almost four times higher conductivity! However this is the theory and we'll see what will be the practice...

I've noticed that even when my CPU has around 90 deg C heat pipes on the heat sink are not hot. They are slightly warm but not hot. So I have a suspicion that there is a poor thermal conductivity between the CPU and heat sink. I would expect that at 90 degrees heat pipes will have - at least - around 40-50 deg C, which I should feel quite well on my fingers.

Anyway, another thing is that I have the HTPC case for my computer, which needs a low profile cooler and fan. So I have a poor cooler and fan comparing to yours - because it's a Scythe Big Shuriken 2 Rev. B. This is a low profile cooler with low profile fan, which I had for years in my old computer.
It worked very well with my old AMD Athlon II X4 640 but here is a big difference and it makes no sense to compare these two CPUs. I'm going also to change the fan to Corsair ML120 PRO LED, which is almost twice as efficient as the old one. We'll see whether this will change anything.

I bought this new hardware about 2 weeks ago so I'm still experimenting. However changing the computer case to have more room for a better cooling is the last thing, which I want to do... however, I do not exclude it...

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Hi Folks,

Question - so once you decide to "delid" a CPU - what's your cooling option ? Are there CPU coolers designed to work with delidded CPU's ?

Regards,
Scott

 

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2 minutes ago, scottb613 said:

Hi Folks,

Question - so once you decide to "delid" a CPU - what's your cooling option ? Are there CPU coolers designed to work with delidded CPU's ?

Regards,
Scott

 

You should put the lid back on with special silicone, the idea of deliding is to replace the Intel thermal compound which is very poor and to reduce the space between your lid and cpu cores.

I used the der8auer delid tool and did it myself.

Simbol 

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