I5 4690K's OC, stress test, and temperature ?

Toggle sidebar Toggle sidebar
L

lokon

Distinguished
Jan 1, 2011
18
0
18,510
Before telling my story, just want to let you guys know that I am a novice in OCing. So please point out or advise me on anything you find wrong.

So I bought a $20 CM 212 Plus air cooler for my i5 4690K yesterday (my mobo is asrock z97 extreme6), and just now I tried to OC my CPU to 4.2Ghz with the following setting that I found from a YouTube video
CPU Ratio -> 42
CPU Cache Ratio ->38
CPU Input Voltage -> 1.900v FIXED
CPU Override Voltage -> 1.190V OVERRIDE
CPU Cache Override Voltage -> 1.080V OVERRIDE

and my CPU temperature skyrockets to almost 90'c in IntelBurnTest(v.2.54) ! ! !

Do I have the wrong OC setting or have I not installed my air-cooler properly ? The thing is the cooler is already firmly attached to the CPU and motherboard, the only thing I would to blame is probably the thermal paste ?

My CPU temperate without OC during the burn test is around the low 70s.
My room temperature is probably around 60~70 since I am only running AC in my living room.

*UPDATED with more questions: I did some googling and found that HASWELL is known to have high temp during stress test because of overvolting ? I also saw recommendation to use "Intel Extreme Tuning Utility" for HASWELL stress test. I tried that stress test and the CPU max temp was at low 70s, which was almost 20'c lower than the results from other stress tests. ANY CONFIRM that this program is viable for stress/stability test ?
 
Solution
N3rdR4ge
yes, 77 is the max safe core temp for that chip.
also yes, the section in hw64 you are referring to is the core temp section [Core #0, Core#1, Core#2, Core#3]

you should be ok as long as you monitor temps in games and at warmer temperatures in your room. the cores really shouldnt go past 70 in normal use.

as for answers on overclocking watch this through for help
https://www.youtube.com/watch?v=QBfXruwe8w4
Sort by date Sort by votes
L

lokon

Distinguished
Jan 1, 2011
18
0
18,510
So I have been doing the prime95 v26.6 blend test that you suggested in that post for the past 10mins or so, and currently all 3 CPU cores' temperatures are fluctuating between 75'c to max 79'c, only the 4th core remains cooler than the rest with a max 73'c temp.

About the lowering of voltage, if I was to try so, should I only lower my CPU Override Voltage, which is current 1.190V ? Do I leave other setting unchanged ? By the way, are my OC settings correct in the first place ?
 
Upvote 0 Downvote
L

lokon

Distinguished
Jan 1, 2011
18
0
18,510
After 20mins of testing, the blend test showed that all 4 cores of the CPU passed. My CPU max temp was 80'c

I did reset my bios setting prior to this OC setting that I am now using, and now that I've watched the video, I am wondering is OCing really just tweaking of two settings( the multiplier and the core voltage) that easily ? Why would the Youtube Video that I follow its' OC setting, suggests to tweak other settings ?

I see that you have the same CPU and are also using an asrock mobo (which I suppose it has a similar bios options and settings like mine), could you point out what should I do with the bios setting, or my cpu core voltage, to get a better temperature at 4.2Ghz ?

 
Upvote 0 Downvote
CompuTronix

CompuTronix

Intel Master
Moderator
Nov 13, 2006
6,374
279
38,240
Guys,

Blend is NOT the correct test.

Small FFT's is the correct test. You only need to run it for 10 minutes. Please read this entire Guide to get yourselves up to speed on this topic!

From Section 12 of the Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

"Prime95 Small FFT's is the standard for CPU thermal testing, because it's a steady-state 100% workload. This is the test that Real Temp uses to test sensors. The link above is to version 26.6, which is well suited to all Core i and Core 2 variants.

Core i 2nd, 3rd and 4th Generation CPU's have AVX (Advanced Vector Extension) instruction sets. Recent versions of Prime95 such as 28.5 run AVX code on the Floating Point Unit (FPU) math coprocessor, which produces unrealistically high temperatures. The FPU test in the test utility AIDA64 shows the same results.

It's not necessary to run AVX code for thermal testing. Prime95 v26.6 produces temperatures on 3rd and 4th Generation processors more consistent with 2nd Generation, which also have AVX instructions, but do not suffer from thermal extremes due to having a soldered Integrated Heat Spreader and a 35% larger Die.

Prime95's default test, Blend, is a cyclic workload for testing memory stability, and Large FFT's combines CPU and memory tests. As such, Blend and Large FFT's both have cyclic workloads which are unsuitable for CPU thermal testing.

Other stability tests such as Linpack and Intel Burn Test have cycles that peak at 110% workload, which are also unsuitable for CPU thermal testing. The test utility OCCT runs elements of Linpack and Prime95.

Shown above from left to right: Small FFT's, Blend, Linpack and Intel Burn Test.

Note the steady-state thermal signatures of Small FFT's, which allows accurate measurements of Core temperatures.

Shown above from left to right: Small FFT's, Intel Extreme Tuning Utility CPU Test, and AIDA64 CPU Test.

The "Charts" in SpeedFan span 13 minutes, and show how each test creates different thermal signatures. Intel Extreme Tuning Utility is also a cyclic workload. Although AIDA64's CPU test is steady-state, the workload is well below Thermal Design Power (TDP), which is insufficient."

CT :sol:
 
Upvote 0 Downvote
L

lokon

Distinguished
Jan 1, 2011
18
0
18,510
Thanks ! Learned something new again!

So I did a small FFT for 15mins and there were no errors and warnings, and the max temp of the CPU cores were exactly 77'c. It was 2', 3'c lower than the previous test since I am running AC in my own room at the moment.
By the way, I am using HW64 for measuring temperature. The CPU temperature section contains DTS, which should indicate that it is indeed measuring core temperature like it says ?
I read your guide, if I am not mistaken, my max CPU temperature is just at the edge of i5 4690K safe core temperature of 77'c ?

Guess I am stable then ?

Going back to the lowering of voltage part. Should I reset my bios and simply OC my CPU with only changes to multiplier and cpu core voltage, and then lower the voltage from then ?
or Should I keep using the current OC setting, which has already tweaked something else besides the multiplier and cpu core voltage that I have no idea what they are, and then do the same with lowering the voltage ?
 
Upvote 0 Downvote
N3rdR4ge

N3rdR4ge

Distinguished
Jun 16, 2014
4,202
2
18,965
yes, 77 is the max safe core temp for that chip.
also yes, the section in hw64 you are referring to is the core temp section [Core #0, Core#1, Core#2, Core#3]

you should be ok as long as you monitor temps in games and at warmer temperatures in your room. the cores really shouldnt go past 70 in normal use.

as for answers on overclocking watch this through for help
https://www.youtube.com/watch?v=QBfXruwe8w4
 
Upvote 0 Downvote
Solution
convertedconsolegamer_92

convertedconsolegamer_92

Reputable
Sep 13, 2014
142
0
4,710


I found this out during my CPU testing using Intel Burn Test. I noticed my CPU load would not stay at 100 percent and this usually happened seconds before a new reading would post in the log. I watched a video by Tech Yes City and he explained pretty much everything you explained in your post. Now I only use Prime 95 small ftt's for true CPU thermal testing but I still use IBT to test for CPU and RAM stability when overclocking RAM and my CPU Northbridge.
 
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