Intel 4790K Temperature Problems

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Matthew R87

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Jul 11, 2014
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Hello,

I just recently built an Intel 4790K based system, using an Asus Hero Maximus VII MB. I am using the stock CPU cooler with Arctic Silver 5 thermal paste. The CPU is not overclocked. My CPU core idle temperature is around 45 C. It reaches a low of around 40 C when all the fans are on maximum. When I stress test it with Intel Extreme Tuning utility the temperatures shoot up to 90 C and the computer hangs. I've redone the thermal paste and remounted the cooler six times, to no avail. I have already put in an RMA request for a new CPU. However, does anyone have any other suggestions before I send it away? Thanks very much! This is driving me crazy. I don't think I'm doing anything wrong, but I've never seen anything like this with an Intel processor before.

Matt
 
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InvalidError

Most likely just the HSF not attached properly - you may have screwed it up by replacing Intel's pre-applied paste.

The tolerances on Intel's plastic shroud and push-pins are fairly tight and I would not be surprised if Intel's clay-like paste was part of contact-force equation: replace it with something more runny, the HSF bottoms out and no longer has enough contact force for good thermal transfer.

If I decide to reclaim my C2D's 212+ for my i5, I might try re-attaching the stock HSF using long bolts, nuts, nylon, steel and compression washers - see if bypassing the push-pins and the fan frame's push-pin "tubes" makes the stock HSF usable again. I'm guessing it would.
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herrwizo

herrwizo

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Feb 17, 2009
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That's almost a problem by itself :D You don't overclock, so it *should* be fine (it is for most people), but sometimes you CAN get a slightly deformed cooler with the pins bent and not getting a perfect contact. This likely has nothing to do with your CPU. I would just get Cooler Master Hyper 212X and call it a day.

 
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C

Catalyzer

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Apr 7, 2014
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The stock CPU Cooler is okay for normal usage not when you stress test , also bear in mind the ambient temperatures affect the CPU temp to a larger scale.
So expect it to be hot if your ROom temps are hot.
Eitherways just buy a cheap aftermarket heatsink which has better cooling potential and really stop stress testing your CPU on a stock Cooler , it wont dissipate that much heat like aftermarket heatsinks do.
 
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Matthew R87

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Jul 11, 2014
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Sorry guys, perhaps I should elaborate. My ambient room temperature is 21 C. My MB temperature is 28 C.

So the stock cooler is totally useless then? I just thought that a 4 ghz CPU should be able to run at 4 ghz with the supplied cooler. Even just running 3DMark it reaches 90 C and hangs. The Intel Tuning utility causes it to hang within 20 seconds. To me it just seems like it is overheating way too fast, but I guess I'm not an expert.

What about the idle temps? Aren't those abnormally high as well? Particularly with ambient temp of 21?
 
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herrwizo

herrwizo

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Feb 17, 2009
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Idle temps are fine. As for the EVO, a new version has been released, 212X. I guess the good/bad debate mostly revolves around heavy OC-ing and personal preferences while OC-ing. For "normal" OC-ing (without too much voltage increase) it will be just fine.
 
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InvalidError

InvalidError

Titan
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May 18, 2007
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The stock CPU cooler is perfectly fine for stress-test at stock clock and voltage - that is what the CPU and stock HSF are designed for and that is what Intel's three-years warranty is based on. My i5-3470 has been "stress-tested" for over 15k hours (always-on and almost always under at least 50% load) using the stock cooler and my core temperatures are usually in the 60-65C range.

As far as the amount of heat that needs to get dissipated goes, a device dissipating 50W dissipates 50W regardless of what heatsink is attached to it - if any at all. What changes is the temperature at which the heat output from the device will reach equilibrium with the heatsink's convection and conduction cooling capacity.
 
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Matthew R87

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Jul 11, 2014
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So do you think there may be something wrong with the CPU then?

I have a Corsair Spec-03 case. It has the two 120 mm fans in the front and the one fan in the back. I have an EVGA 1000 W power supply, and an MSI 770 GTX video card.
 
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InvalidError

InvalidError

Titan
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May 18, 2007
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Most likely just the HSF not attached properly - you may have screwed it up by replacing Intel's pre-applied paste.

The tolerances on Intel's plastic shroud and push-pins are fairly tight and I would not be surprised if Intel's clay-like paste was part of contact-force equation: replace it with something more runny, the HSF bottoms out and no longer has enough contact force for good thermal transfer.

If I decide to reclaim my C2D's 212+ for my i5, I might try re-attaching the stock HSF using long bolts, nuts, nylon, steel and compression washers - see if bypassing the push-pins and the fan frame's push-pin "tubes" makes the stock HSF usable again. I'm guessing it would.
 
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Solution
InvalidError

InvalidError

Titan
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May 18, 2007
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The stock HSF is designed to run the CPU under its rated worst-case conditions covered by the warranty when properly installed. In a normal operating environment, the CPU's operating temperature even under stress-test will be much lower than what the CPU is rated for.
 
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jldevoy

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I have never known anyone on an hardware forumn to even bother stress testing stock speeds with a stock cooler; the point of a stress test is to cause an abnormally high workload and push the cpu beyond normal temps in order to see if your fancy cooling can keep it stable at your chosen speed.
If you're using stock speed and stock cooler just run a temp logger while you play some games, if it has to throttle the cpu then something is wrong.
 
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InvalidError

InvalidError

Titan
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May 18, 2007
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Why wouldn't someone stress-test at stock speed and stock cooler? Everyone needs to sanity-check their computer every now and then. If your PC fails stress-test at stock speed, it won't do you any good when overclocked.

For people who cannot be bothered with overclocking, like me, stress-testing with the stock HSF is a great way to find out if they want to bother with the extra expense of an aftermarket HSF. My i5-3470 does not break 65C under full-load when my room temperature is around 30C so I'm not going to bother putting a 212+/EVO/X in - at least not yet.
 
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