6th gen i7 6700k heat fluctuation

Toggle sidebar Toggle sidebar
J

jacobtc

Reputable
Dec 27, 2015
17
0
4,510
my cpu has been fluctuating temps from 25c to 50c when running basic programs, is the voltage on the mobo off or maybe its just the program (corsair link)?
cpu: 6th gen i7-6700k
cpu cooler: corsair h115i with new noctua industrial fans
mobo: asus sabertooth z170s
ram: corsair vengance led 32gb
gpu: gtx 960
psu: corsair 650 watt

 
Solution
Ecky
No issue, this is pretty normal. You might expect to see temperatures as high as 70, or even 80-90c under heavier loads (which is safe!), so light loads causing a jump to 50 is to be expected.
Sort by date Sort by votes
J

jacobtc

Reputable
Dec 27, 2015
17
0
4,510


the cpu usage jumps all over from 0 to about maybe 35% and the temps spike on one core making my coolers fan run harder because the highest temp on all of the cores is considered the package temp, so my fans jump too, but all cores do spike, just not all at once, at like 30% load its hitting 100f or i think 30c and the performance mode makes the fans jump around so i have it at 75% constant, im just wondering if there is an issue
 
Upvote 0 Downvote
M

MkoShuan

Commendable
Oct 16, 2016
2
0
1,510
Almost the same build, same problem ;

i7 6700k (stock speed)
Asus Maximus Formula VIII
Corsair H115i
Gskill Trident 32 gb
GTX 1080 SLI
Corsair RM850x

According to Corsair Link 4, temps are just fluctuating like crazy with minimal load. 25-60°c under 3-5% loading?!
I took apart my PC several times, re-apply thermal paste, reseat the cooler, check the air flows and the cooler itself but nothing change.
So could the sensors/BIOS of these motherboards' series be faulty? Besides I cannot feel any warm air at the exhaust of the case even when monitoring softwares are pointing high temp variations...

There are two big problems here ; first we cannot have an accurate and clear reading of the CPU temp, second the H115i become really noisy each time a temp spike occurs.
I'm still investigating that issue.
 
Upvote 0 Downvote
H

Hambo

Honorable
Aug 7, 2013
5
0
10,510



i76700k
Corsair H115i
Asus Maximus 8 Formula
EVGA GTX980 Ti FTW
Corsair 32gig 3200mhz
EVGA P2 1200w

I have similar build and same issue.... Did you find the problem? I was using a H100i and upgraded to try to fix the problem no change at all... temps sit in 80's and when gaming (no overclock) cant or it overheats.... Just sent my 6700k back to PC Case Gear see if i get a new one.
 
Upvote 0 Downvote
M

MkoShuan

Commendable
Oct 16, 2016
2
0
1,510
So this is what I found so far ;
http://www.overclockers.com/forums/showthread.php/775067-Stock-6700K-unstable-temperatures
https://forum.teksyndicate.com/t/solved-big-temperature-fluctuation-on-i7-6700k-4-6ghz/100049/20

It appears that Skylake CPU tends to have a really high base VID (around 1.42 V !) and Vcore.
(As reminder VID is the voltage CPU wants but no necessarily needs and Vcore is what it actually gets)
As a consequence, each time you're doing something or a background app is running, your CPU draws a massive amount of power for a few seconds and temps sensors are going crazy.
The" fix " seems to manually tweak the vcore using offset mode inside the BIOS to keep it cooler.

This is the only logical assumption I could come with so far. Besides there're a lot of people reporting this particular issue with different setups but same CPU. I might be wrong, maybe we just got faulty ships or crappy coolers, bad BIOS or softwares, honestly at this point I don't really know.
Not to mention that all this stuff is relatively new (Skylake has been release almost a year ago) so we're currently lacking of datas about potential issues. No doubt that more changes and further answers are coming though, so I'll try to be patient...
 
Upvote 0 Downvote
H

Hambo

Honorable
Aug 7, 2013
5
0
10,510
ok so its Corsair link that is the problem. I just got my new CPU same issue.

1. Uninstalled link
2. Turn off
3. Disconnect the USB and fans.
4. Reconnect fans to CPU header's (I have 2) on the motherboard.
5. turn on
6. If u have turned off the CPU fan monitor in BIOS, turn back on.

I ran iada64 extreme to check temps witch were fine, so much quieter now...
 
Upvote 0 Downvote
R

Robert_397

Prominent
Apr 4, 2017
2
0
510


I'm having the exact same problem and I have the same cpu as Jacob and mine is not overclocked and its having the same fluctuations and it came out of nowhere all so sudden. my cpu used to idle at 23c and fluctuate by one but now mines going up and down as described. its just kind of odd how this so suddenly happens and I know for sure that this is not normal. right now I have my cpu fans maxed out and they still fluctuate. I have a H115i. I also cleaned the thermal paste off and put new clean paste on and just the right amount and yet the problem still consists. can someone please help me.
 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom