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7700K strange temperature behaviour. What could be causing this? What is safe max temp for 5 years of use?

post #1 of 13
Thread Starter 
Hi everyone, I recently built a 7700K system (and a Ryzen system wheee.gif), here are the components:
Warning: Spoiler! (Click to show)
CPU: i7 7700K @ stock

Cooler: Be Quiet! Pure Rock Slim 120mm (+ 2 front intake fans + 1 rear exhaust fan - all airflow is in the same direction throughout the case). Using Arctic MX-4 thermal paste.

Motherboard: Gigabyte Z270 HD3P

RAM: Corsair Vengeance low profile, 32GB DDR4 3000MHz @1.35V (must enable XMP to get the advertised speed of 3000MHz)

PSU: Seasonic M12II-520 EVO

GPU: Zotac AMP Extreme GTX 1070

Case: Aerocool Aero 800 white.


I've been having some strange temperature behaviour at stock. I got everything set up, and started running some applications and benching a few games to test it all out. Firstly, at idle the temps were around 45C to 50C (with ambient ~20C). When opening and using an application like Chrome or Steam, the temps would temporarily spike up to 60C. In Total War: Warhammer benchmark, the CPU went as high as 84C, and that benchmark is only about a minute long!

CPU-Z showed that the motherboard was giving just over 1.3V to the CPU at stock! A BIOS update took this down to 1.2V on the "auto" voltage setting. But the temps were still as high as 80C in games. A few days later, I decided to use AIDA64 for 15 minutes to see what would happen and the temps max out at 72C while stressing CPU, FPU and cache. But temps still go as high as the low 60s in basic tasks like web browsing.

What could cause this? Is it that the thermal paste has a burn-in period, which explains why the game benches got high temps but AIDA64 got reasonable temps? Also, if I want to hold on to this CPU for about 5 years, what's a safe max temp? Another thing: since I'm planning to hold on to the CPU for a long time, is it worth taking the risk and delidding it for lower temps?
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post #2 of 13
The 7700k runs hot, many people come here and basically post similar temps as yours on idle and at load. You did nothing wrong really.

I'd recommend a top beastly air cooler in the $100 range with push/pull, that TIM is good, but there are better where you can shave another 2-3C. Also I recommend you set the volts manually for the CPU, see what is stable at lowest volts.

Additionally, delidding would produce best results.
 
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post #3 of 13
Thread Starter 
Quote:
Originally Posted by Gunderman456 View Post

The 7700k runs hot, many people come here and basically post similar temps as yours on idle and at load. You did nothing wrong really.

I'd recommend a top beastly air cooler in the $100 range with push/pull, that TIM is good, but there are better where you can shave another 2-3C. Also I recommend you set the volts manually for the CPU, see what is stable at lowest volts.

Additionally, delidding would produce best results.

Alright, sweet. I'll pick up a Phanteks PH-TC14PE when I can. For now, I tried some undervolting and 1.050V was too little. I'll try 1.1V. For how long should I test it for? Should I use AIDA64? Should I stress CPU, FPU, and cache, or just CPU?

As for delidding... I'll grab one of those delidding kits, I'm too scared of messing it up using a razor tongue.gif
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post #4 of 13
Yes, it's like overclocking, use the same tools that you have to test stability. I used x264 Stability Test. AIDA64 is also good and just general use after that will confirm the stability.
 
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post #5 of 13
Thread Starter 
Quote:
Originally Posted by Gunderman456 View Post

Yes, it's like overclocking, use the same tools that you have to test stability. I used x264 Stability Test. AIDA64 is also good and just general use after that will confirm the stability.

Cool. I'm 20 minutes into an AIDA64 test (CPU, FPU, and cache) @ 1.1V, 4.2GHz, and the temps haven't even gone past 67C. That's... actually cooler than my old 3770K at the same clock speed, but my 3770K had a much beefier cooler (the dual heatsink phanteks one). This is good.
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post #6 of 13
Just a suggestion as it fixed my issues. My temps were reaching over 90C on stock. Only thing I had changed in BIOS was enabling XMP. After some testing, disabled XMP and noticed temps dropping over 20C. I manually set my memory to the 3000mhz they should be (instead of the XMP profile), and the temps remained low, while my memory was still running properly at 3000mhz.

Given, I have an MSI z270, and this may be an issue purely with the MSI boards. Try that out if the Gigabyte MOBO allows you to set it manually.
post #7 of 13
The temperature spikes are something that many people see as well, myself included. There's a thread on the intel site about it. https://communities.intel.com/thread/110728
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post #8 of 13
Thread Starter 
Quote:
Originally Posted by eXultanCe View Post

Just a suggestion as it fixed my issues. My temps were reaching over 90C on stock. Only thing I had changed in BIOS was enabling XMP. After some testing, disabled XMP and noticed temps dropping over 20C. I manually set my memory to the 3000mhz they should be (instead of the XMP profile), and the temps remained low, while my memory was still running properly at 3000mhz.

Given, I have an MSI z270, and this may be an issue purely with the MSI boards. Try that out if the Gigabyte MOBO allows you to set it manually.

I've done that and set my voltage to a meagre 1.075V. After 12 minutes of AIDA64 my temps aren't going above 63C. I'll keep it going for an hour to see if it's stable. This is a wonderful chip... I'm tempted to actually overclock it while undervolting it!
Quote:
Originally Posted by Inelastic View Post

The temperature spikes are something that many people see as well, myself included. There's a thread on the intel site about it. https://communities.intel.com/thread/110728

It's comforting to read that that's normal. But, like the user in that thread experienced, I was hearing my CPU fan ramp up and slow down all the time when it was at stock volts. Even with a super-quiet cooler like the Be Quiet! Pure Rock Slim, it's a bit annoying. Now though, 1.075V seems to have fixed the issue.
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post #9 of 13
i just recently started a thread regarding 7700k temps as well. i knew it ran hot but it seems some chips are much worse than others. and unfortunately a better cooler isnt going to help. i just upgraded to a h115i figuring it would solve my temp issues, but nope, not really. and its due to the way the 7700k suddenly spikes. itll be 60-70s most of the time under heavy avx load but then suddenly jump into the 80s or 90s . as mentioned its probably due to the poor tim application by intel during manufacturing. ive tried 2 7700k and they both displayed the same behavior and high temps.

it really is bs. you shouldnt have to undervolt/clock or delid to get decent temps/performance out of a 350 dollar chip. im about to try and exchange for a third chip since it clearly is a quality control issue considering some people have no temp issues and some can even get 5ghz at temps well below what both of mine delivered stock with the same or even lesser cooling. sure ocing is a gamble but some chips shouldnt be getting fine temps while other are through the roof... stock, with the good cooling.
Edited by MrObscura - 4/9/17 at 3:51pm
post #10 of 13
Quote:
Originally Posted by Edge Of Pain View Post

I've done that and set my voltage to a meagre 1.075V. After 12 minutes of AIDA64 my temps aren't going above 63C. I'll keep it going for an hour to see if it's stable. This is a wonderful chip... I'm tempted to actually overclock it while undervolting it!
It's comforting to read that that's normal. But, like the user in that thread experienced, I was hearing my CPU fan ramp up and slow down all the time when it was at stock volts. Even with a super-quiet cooler like the Be Quiet! Pure Rock Slim, it's a bit annoying. Now though, 1.075V seems to have fixed the issue.

Yea, I was able fixed that issue by making my fan curves based off of the water temps of my custom loop.
Quote:
Originally Posted by MrObscura View Post

i just recently started a thread regarding 7700k temps as well. i knew it ran out but it seems some chips are worse than others. and unfortunately a better cooler isnt going to help. i just upgraded to a h115i figuring it would solve my temp issues, but nope, not really. and its due to the way the 7700k suddenly spikes. itll be 60-70s most of the time but then jump into the 80s or 90s. as mentioned its probably due to the poor tim application by intel during manufacturing. ive tried 2 7700k and they both displayed the same behavior and high temps.

it really is bs. you should have to undervolt/clock or delid to get decent temps/performance out of a 350 dollar chip. im about to try and exchange for a third chip since it clearly is a quality control issue considering people have no temp issues and some can even some people get 5ghz at temps well below what both of mine delivered stock. sure ocing is a gamble but some chips shouldnt be getting fine temps hile other are throw the roof stock with the good cooling.

Interesting, I've never seen that behavior on mine. The spikes I'm referring to are when you open an application and it jumps to like 60 C, from like 35C at idle, then goes back down really quickly, all in the span of about 1 second. I've never had my temps ramp up again when at load. Mine increases up to the low 60s and consistently stays there, even through an 8 hour RealBench stress test. I haven't delided mine, but I am on a custom loop.
Edited by Inelastic - 4/9/17 at 3:54pm
Corsair 350D
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NZXT Vulcan
(17 items)
 
 
CPUMotherboardGraphicsRAM
I7-7700K Asus Rog Strix Z270G EVGA GTX 1070 FTW GSkill TridentZ RGB 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 Evo M.2 WD Passport External USB Asus Blue Ray Drive Monsoon Series 2 Reservoir 
CoolingCoolingCoolingCooling
EK Supremacy Evo Alphacool ST30 Alphacool ST30 Alphacool UT60 
CoolingCoolingOSMonitor
Primochill Advanced LRT Swiftech MCP655-PWM Windows 10 Pro Samsung KS498500 
KeyboardPowerCaseMouse
Razer Blackwindow Chroma Stealth Corsair AX1200 Corsair 350D Razer Naga Chroma 
Mouse PadAudio
Razer Firefly Creative Soundblaster Z 
CPUMotherboardGraphicsRAM
I5 3570K Asus Maximus V Gene eVGA GTX 670 FTW GSkill Trident 
Hard DriveHard DriveOptical DriveCooling
Samsung 840 Pro Samsung Spinpoint Asus Blue Ray Drive Thermaltake Water 2.0 Pro 
OSMonitorMonitorKeyboard
Windows 7 Home BenQ XL2420TX Asus VK256H Razer Blackwindow Ultimate Stealth 
PowerCaseMouseMouse Pad
Corsair AX1200 NZXT Vulcan Razer Naga 2012 Razer Destructor 2 
Audio
Asus Xonar Xense 
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Corsair 350D
(22 items)
 
NZXT Vulcan
(17 items)
 
 
CPUMotherboardGraphicsRAM
I7-7700K Asus Rog Strix Z270G EVGA GTX 1070 FTW GSkill TridentZ RGB 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 Evo M.2 WD Passport External USB Asus Blue Ray Drive Monsoon Series 2 Reservoir 
CoolingCoolingCoolingCooling
EK Supremacy Evo Alphacool ST30 Alphacool ST30 Alphacool UT60 
CoolingCoolingOSMonitor
Primochill Advanced LRT Swiftech MCP655-PWM Windows 10 Pro Samsung KS498500 
KeyboardPowerCaseMouse
Razer Blackwindow Chroma Stealth Corsair AX1200 Corsair 350D Razer Naga Chroma 
Mouse PadAudio
Razer Firefly Creative Soundblaster Z 
CPUMotherboardGraphicsRAM
I5 3570K Asus Maximus V Gene eVGA GTX 670 FTW GSkill Trident 
Hard DriveHard DriveOptical DriveCooling
Samsung 840 Pro Samsung Spinpoint Asus Blue Ray Drive Thermaltake Water 2.0 Pro 
OSMonitorMonitorKeyboard
Windows 7 Home BenQ XL2420TX Asus VK256H Razer Blackwindow Ultimate Stealth 
PowerCaseMouseMouse Pad
Corsair AX1200 NZXT Vulcan Razer Naga 2012 Razer Destructor 2 
Audio
Asus Xonar Xense 
  hide details  
Reply
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  • 7700K strange temperature behaviour. What could be causing this? What is safe max temp for 5 years of use?
Overclock.net › Forums › Intel › Intel CPUs › 7700K strange temperature behaviour. What could be causing this? What is safe max temp for 5 years of use?