Intel i5 4670k Hot temps ?

[Spov]

Hi,

I'm a first time overcloker and around 3 months ago I overcloked my i5 4670k to 3,8Ghz. Since I now have more time I wanted to try and overclock it to 4,5 ghz but before I did that I ran Intel Burn Test and opened up Real Temp and just did a casual stress test because I wanted to see the temps at 3.8Ghz and compare later. But to my amazement my CPU hit 100 degrees several times at Real Temp and cores 1,2 and 3 all have "LOG" under them whereas core 4 has "OK" written under it.

At idle I get around 35 degrees (which I also think is pretty high) and my core voltage is around 1.2 so I think that is alright. I'm not sure what the problem could be ?

Also, do you think my CPU will be able to overclock to 4,5 ghz with a hyper cooler 212 evo ?

My specs:

Asus Maximus VI Hero
I5 4670k
Hyper 212 Evo
NZXT Phantom Case

Regards
Spov

 

[davidarad02]

with a hyper212 you probably wont be able to hit 4.5.

 

[Spov]

What about 4 or 4,3 ghz ? :/

 

[CompuTronix]

Spov,

Intel Burn Test (not written by Intel) is OK for stability testing, but not for thermal testing. IBT is a cyclic workload which can exceed 110%. Prime95 Small FFT's is a steady-state 100% workload.

Please download Prime95 version 26.6 - http://windows-downloads-center.blogspot.com/2011/04/prime95-266.html

Run only Small FFT’s for 10 minutes.

Please read this Tom’s Sticky: Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

Thanks,

CT

 

[Spov]

Hi,

Thanks for the reply CompuTronix. Yesterday I reset all my bios settings to default again and I ran Intel Burn Test again. Suprisingly I hit 100 degrees again and this is at stock settings so I quickly canceled the test. After that I ran Prime and I also hit 100 degrees. I don't know why it hits this much on the stress test because when my computer is idle the temperature is around 35 degrees and under load its around 65 degrees (playing games etc.).

Do you think this could be a bad cpu ?

Regards

 

[CompuTronix]

You need to be very specific.

Which version of Prime95 did you run?

Which torture test?

 

[Spov]

I ran Prime95 v27.9 build 1 and the test I ran was Small FFTs.

Regards

 

[CompuTronix]

Spov,

I suggested above that you run Prime95 version 26.6 for good reasons. Apparently a more convincing explanation is required.

Do NOT run any versions of Prime95 later than 26.6. Here's why:

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

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.

Please download Prime95 version 26.6 - http://windows-downloads-center.blogspot.com/2011/04/prime95-266.html

Run only Small FFT’s for 10 minutes.

Your Core temperatures will test 10 to 20C lower with v26.6 than with v27.7 or 27.9 or 28.5.

Please read this Tom’s Sticky: Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

Also, what is your ambient temperature?

Thanks,

CT

 

[Spov]

Hi CompuTronix,

I ran a test with V26.6 of Prime 95 and these are my following results:
Min Max
Core 1: 32 86
Core 2: 32 87
Core 3: 31 88
Core 4: 32 88
In degrees

The thermal status on all cores were "OK" this time round.

Keep in mind that I stress tested my i5 4670k in stock settings (I didn't overclock it). Looking at those temps they are too high for stock settings right ?

Also my idle CPU temp is around 35 degrees and my room temperature is around 24 degrees.

Thanks

 

[CompuTronix]

Default / auto settings in BIOS will use higher Vcore than is necessary, which translates directly into heat.

You need to manually set your Vcore to a lower value. Use CPU-Z to read your Core Voltage.

 

[Spov]

Default / auto settings in BIOS will use higher Vcore than is necessary, which translates directly into heat.

You need to manually set your Vcore to a lower value. Use CPU-Z to read your Core Voltage.

This is CPU-Z when I stress test my computer.

 

[CompuTronix]

What is your Core temperature?

 

[Spov]

What is your Core temperature?

When stress testing it hits around 88 and when idle around 35.

 

[Spov]

Could anyone please help out ?

 

[CompuTronix]

Your high load and idle temperatures suggest a mounting problem. Are you certain that it mounts snugly and that you've used the correct standoffs?

Have you tried reapplying thermal compound and reseating your 212?

Thermal Paste Comparison, Part One: Applying Grease And More - http://www.tomshardware.com/reviews/thermal-paste-heat-sink-heat-spreader,3600.html

Intel Stock Cooler Installation Guide - http://www.tomshardware.com/forum/338655-28-intel-stock-cooler-installation-guide

 

[Spov]

I am sure I have mounted the CPU cooler correctly and I am also sure that i applied the thermal compound correctly. I will try re-mounting the CPU cooler and reapplying the thermal compound now that you have mentioned it.

Thanks

 

[CompuTronix]

When you remove the cooler, very carefully inspect the spread pattern. That may reveal how much the cooler is in contact with the surface of the IHS.

Keep in mind that too much thermal compound can behave as a thermal insulator more than a conductor.