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Temp Problems 4670k @ Low OC

cthulhuiscool

cthulhuiscool

2[H]4U
Joined
Mar 15, 2006
Messages
3,058
So I'm having stability problems with even very low OC's on my 4670k (3.8, 4) which I would wholly expect to work fine. It tends to idle in high 20s/low 30s but when I give it a stress with OCCT (Infinite, 64, large data, threads automatic) it lasts only a couple minutes tops before putting out an over temp error.

Setup
i5 4670k
Asrock h87M pro4
Rosewill RCX-ZAIO-92 w. airflow directed out back fan

Possible reasons I am considering: Though it covered the whole chip, I had thermal paste (cooler master brand that came with my friend's tx3) on in a very thin layer. I know less is generally more, but perhaps I had too little?
The default fan speed mobo settings don't seem to know how to handle the fan and lock it at a really high/loud speed. (even standard). I instead use custom settings by temp with 50c @60% speed, and so on.
Currently using the onboard graphics chip until my gpu arrives. I don't believe it stresses the chip much when not being used, but maybe enough to push it over?

Just wanted to see what you guys think, or if this is normal
 
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I think you may be setting the multiplier to 38 which is the limit for your chip, and the motherboard voltage is set to auto (if that's even an option on H87). Your motherboard is applying extra voltage and is increasing the heat output. Coupled with a bad heatsink mount and Haswell thermals i could see your situation happening.

First, reseat the heatsink using the grain of rice in the middle method, and squishing it down to spread it instead of spreading it out before putting the HSF surface onto the CPU.

Then drop everything back to stock in the bios and have another go at OCCT and post your results.
 
Here are occt results everything at stock (no overclock). https://drive.google.com/file/d/0B6rAhCaDYCXdZVlZd0tVQWh4Y2M/edit?usp=sharing
This is before I made any changes according to your advise.

So I reseated the way you say and temps seem to have dropped. How long of an occt infinite run should I do to have a good idea?

Well suprfire seemed on the money with the seating. I tried the approach he mentioned, and with no other alterations I could do an occt burn @ 4.2 for 2 hours no problem. Guess problem solved.
 
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