• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

i7-8700k runs insanely hot even at stock speeds ?

Oh hey, If it hasn't been suggested go into the bios and then into the "OC" tab and then under the cpu ratio stuff click to drop the "Miscellaneous" options and turn off "Enhanced Turbo Core" should be the last option.

Not sure why but when that's enabled it causes the cpu to heat up fast for no reason with no gains.
 
EarthDog said:
It raises all cores to turbo clocks. This should be disabled by default unless xmp was enabled and the op clicked yes for the mce.
Click to expand...
I just turned on XMP and it got turned on MSI z370 Gaming M5....CAM started giving me 100c warnings....freaked me out...was 65c at idle when it was 28c prior.
capture004.jpg
 
Last edited by a moderator:
my asus board has an auto 5 gig setting.. it runs 1.34 -ish volts.. at 4.8 it runs 1.264..

my 7700K was about the same.. the temps are also about the same.. my 8700K is maybe just tad cooler than my 7700K was but not my much.. 6 cores running cooler than 4 cores dosnt make a lot of sense to me but it does seem the case..

both chips hit heat problems and are limited by heat.. i run mine all cores at 4.8 gig.. 5 gig being a little too hot for my liking..

my memory is running at xmp 3200..

trog
 
Last edited:
droopyRO said:
I use 1.21V with High LLC for my 4.8Ghz 8600k, why not lower your vcore ?
Click to expand...

I do mixed workloads from time to time, like updating Win7 ISO´s with DISM, so also having a GTX670 (my bottleneck any day of the week), it doesnt make sense to me to OC past the normal Turbo bins or fiddel with lowering volts, its minimal gains vs the possibility of something not being 100% stable in the long run :)

Btw, you replied to my correction in regards to Realtemp logging wrong clocks, i do run at stock, but thats manualy punching in clocks and volts except vCore, the point here was leaving all settings at "stock" aka auto, would be 4,7Ghz @ 1,47v, wihtc is NOT truely stock as this would be 4,3Ghz @ around 1,27v :)

trog100 said:
my asus board has an auto 5 gig setting.. it runs 1.34 -ish volts.. at 4.8 it runs 1.264..

my 7700K was about the same.. the temps are also about the same.. my 8700K is maybe just tad cooler than my 7700K was but not my much.. 6 cores running cooler than 4 cores dosnt make a lot of sense to me but it does seem the case..

both chips hit heat problems and are limited by heat.. i run mine all cores at 4.8 gig.. 5 gig being a little too hot for my liking..

my memory is running at xmp 3200..

trog
Click to expand...

Like i wrote in my previous post, you cant leave IO/SA on auto on Z370 boards and expect them to hit the mark spot on, they will throw way too much volt out to compensate for working out of the box, and its does, it just adds loads of unneeded heat.


jmcslob said:
I just turned on XMP and it got turned on MSI z370 Gaming M5....CAM started giving me 100c warnings....freaked me out...was 65c at idle when it was 28c prior.
Click to expand...

You need to lock in the IO/SA volts, and if doing OC, vCore and LLC ofc (this one is important, Auto on my MSI SLI Plus board is really bad when you start changing vCore)

Look at my post #170 what i wrote there regarding IO/SA volts, as these are the ones XMP will highly effect if left on auto :-)
 
Last edited:
Cocio21 said:
You need to lock in the IO/SA volts, and if doing OC, vCore and LLC ofc (this one is important, Auto on my MSI SLI Plus board is really bad when you start changing vCore)

Look at my post #170 what i wrote there regarding IO/SA volts, as these are the ones XMP will highly effect if left on auto :)
Click to expand...
I turned XMP off and set memory manually @3200mhz 14-16-16-34 and the temps don't go above 80c during stressing....during gaming it's only hitting 65c.
Turning XMP on on this board messes with to many voltages and creates way to much unnecessary heat.
I will adjust what you suggested as I go into fine tuning whenever I get to it.
 
Last edited by a moderator:
It does that on most(all?) boards. It depends on the memory speed though.

Best bet is to note IO/SA sotck voltages, then enable XMP and set those voltages manually.
 
EarthDog said:
It does that on most(all?) boards. It depends on the memory speed though.

Best bet is to note IO/SA sotck voltages, then enable XMP and set those voltages manually.
Click to expand...
Not arguing and I see that you are correct but I'm not going to enable XMP solely because this memory is better than the profile provided.
 
EarthDog said:
What does that mean??
Click to expand...
Basically the MSI "Try It" memory profile for 3200 is a better starting point than the XMP profile...I have far fewer voltages and timings to adjust.
The XMP is sloppy....very sloppy
I;m not running at 3200 anymore either....I'm working on fine tuning @3600

Nothing fine tuned as of yet
capture010.jpg
 
Last edited by a moderator:
As sloppy as XMP implementation is on some boards (i stated that wrong before, XMP is a static extended SPD, the board up the volts by ramspeed not XMP settings), with XMP off and at just DDR2133, my board will still push the IO/SA volt unneeded by quite a bit.

I did a lot of unneeded testing, turned out to be my Gpu not wanting to play nice running Pci-E 3.0 :p

Again its the "we want your DDR4000+ ram to work out of the box" implementation from the board vendor, thats causing this issue:)

jmcslob:

Most of your volts should have a mention on the stock value, like you see in the pic i posted with #170

You should be able to run at stock IO/SA volts at DDR3200 :)

/E

lol i didnt notice this before, but this OC guide actualy mentions that most boards will take IO/SA volts to their limit on auto (1,31v/1,35v) :p

https://www.tweaktown.com/guides/8481/coffee-lake-overclocking-guide/index4.html in the bottom part.

Very nice guide, i should have read past page 1 the day i found it :laugh:
 
Last edited:
Intel burn test maximum stress level runing time ~ 20 minutes.

Hottest Core - 68C
VRM MOS - 66C
Core Voltage ~ 1.128V
CPU Fan Speed ~ 1062 RPM

i7-8700k @ fully stock clocks and core voltage, XMP profile enabled. Guys your thoughts about these temperatures ?
i7-8700k Temperatures.png


Idle temperatures.
I7-8700k Idle Temperatures.png
 
Last edited:
they are fine for stock with a core voltage at 1.128..

its when you start to clock them up that things start to get a little hot.. :)

trog
 
droopyRO said:
I use 1.21V with High LLC for my 4.8Ghz 8600k, why not lower your vcore ?
Click to expand...
I use exact same settings for mine, ~1.20 and what AsRock calls LLC2 (high, but not extreme) for my 4.8 8600K as well.

Verbatim said:
Intel burn test maximum stress level runing time ~ 20 minutes.

Hottest Core - 68C
VRM MOS - 66C
Core Voltage ~ 1.128V
CPU Fan Speed ~ 1062 RPM

i7-8700k @ fully stock clocks and core voltage, XMP profile enabled. Guys your thoughts about these temperatures ?
View attachment 98311

Idle temperatures.
View attachment 98315
Click to expand...

Totally Normal. You don't need to change a thing. Honestly if it runs hotter than that when overclocked, don't even overclock it. It does not matter one bit with this architecture and current software requirements. Coffee Lake temps are a much a-do about nothing. The only reason to overclock it is for e-peen anyway. It won't matter for games, for browsing, for work.
 
Figured I'd give an update with my 8700k.... I'm in process of RMA with Intel.... My chip has become completely helpless...
Doesn't matter if it's HL2, Mass effect Andromeda, Call of Duty WW2, Mortal Kombat X, Injustice 2 or even Dirt Showdown... If I run it for more than 40 minutes it overheats and suffers a lockup..
I have tried to under volt and all that fun stuff but it's just a matter of time before it locks up...
I have even purchased better cooling and it's exactly the same thing...

I was fine until Windows started having issues with a firmware error which forced me into a BIOS update with the Microcode update.... It has been nothing but unstable since even at stock speeds and the memory set at 2133...
I'll update again after I'm done with Intel
 
jmcslob said:
Figured I'd give an update with my 8700k.... I'm in process of RMA with Intel.... My chip has become completely helpless...
Doesn't matter if it's HL2, Mass effect Andromeda, Call of Duty WW2, Mortal Kombat X, Injustice 2 or even Dirt Showdown... If I run it for more than 40 minutes it overheats and suffers a lockup..
I have tried to under volt and all that fun stuff but it's just a matter of time before it locks up...
I have even purchased better cooling and it's exactly the same thing...

I was fine until Windows started having issues with a firmware error which forced me into a BIOS update with the Microcode update.... It has been nothing but unstable since even at stock speeds and the memory set at 2133...
I'll update again after I'm done with Intel
Click to expand...

an intel chip should never lock up through over heating it should simply throttle down to maintain 100 C.. okay it may be a dud chip so you are doing the right thing.. but i cant help thinking it may be more gpu related than cpu..

trog
 
I must've gotten lucky with my chip. Granted it's only an i5, but even @ 5ghz i get great temps. :)
 
trog100 said:
an intel chip should never lock up through over heating it should simply throttle down to maintain 100 C.. okay it may be a dud chip so you are doing the right thing.. but i cant help thinking it may be more gpu related than cpu..

trog
Click to expand...
Meant to update this...
Went through multiple steps with Intel...
Passed all requested testing...
Took PC apart.. Tried different memory, 1 stick of memory, different PSU, different cooler, reset Windows, reinstalled windows,
Eliminated apps and RGB programs...
Finally and completely by accident I didn't allow Samsung magician to start when Windows started and forgot to turn it on and I haven't had a single issue since...
I'm still not convinced Magician is the problem but my problems went away when I stopped using it.
It could have been something loose... Or something else....
I will give it a month and try Magician again..
 
Or, just try it again now and see if it comes back.. how long do you have to wait to confirm? :)
 
jboydgolfer said:
I must've gotten lucky with my chip. Granted it's only an i5, but even @ 5ghz i get great temps. :)
Click to expand...

Not so much luck, but more the absence of 3MB of Cache and HT = much lower power draw. It can amount to 10 C easily

jmcslob said:
Meant to update this...
Went through multiple steps with Intel...
Passed all requested testing...
Took PC apart.. Tried different memory, 1 stick of memory, different PSU, different cooler, reset Windows, reinstalled windows,
Eliminated apps and RGB programs...
Finally and completely by accident I didn't allow Samsung magician to start when Windows started and forgot to turn it on and I haven't had a single issue since...
I'm still not convinced Magician is the problem but my problems went away when I stopped using it.
It could have been something loose... Or something else....
I will give it a month and try Magician again..
Click to expand...

My two cents: don't use Magician at all. There have been multiple bad releases that take long to fix and most of what it offers really isn't necessary. I used it with my old rig + Samsung 830 and it was a nice to have, never a need to have. Now on my new rig I have the 830 + a new 850 EVO and have never installed it, no issues.
 
EarthDog said:
Or, just try it again now and see if it comes back.. how long do you have to wait to confirm? :)
Click to expand...
It's only been a few days stable...I would like at least two weeks for good measure.

This all started when Windows had locked up a few times with a firmware issue in the logs..so I updated my bios to MSI 1.20 with the Microcode update... From there it kinda went to shit...
No current updates for the EVO...
I'm also thinking the EVO I have is the junk version... There are 2 versions of the 500gb EVO... The 500gb and the newer 512gb version.... If anyone gets one pay the extra $30 and get the extra 12gb
 
Last edited by a moderator:
You must log in or register to reply here.
Back
Top