Question Problem with cpu in full load.

Nov 24, 2020
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Hey, i have problem with cpu in full load, 2 or 3 weeks ago we have so many power outage, and from that day cpu start overheat only in full load. I downclock cpu to 3,3ghz and its works fine on that, but when i get it back on 4,0ghz it goes 100c on stress test, in idle is 41 42c. I use i7 4790k.
 
What is the make/model of your case and fan arrangement?
Any cpu cooler needs a good source of fresh air to let it do it's job.
What is the make/model of your cpu cooler and motherboard?
What is your ambient temperature?
I would expect your idle temperature to be 10-15c. over ambient.

When there was a power problem, your bios settings may have been reset to default
If your cr2032 battery failed.
Look into your bios settings to see if all is ok.
Possibly your voltage settings are no longer appropriate.
Some motherboards may default to an inappropriate overclock.

As a check, run HWmonitor.
It will tell you your current, minimum, and maximum temperatures.
At 100c. you should throttle.
You will also get voltage and fan readings.
 
Nov 24, 2020
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PC case is MS shadow, i have 3 fans in front and one fan behind case, MB is maximus hero VI, cooler is lc cc 95, ambient temperature is about 19 20c,
I reset cmos if you mean by that, only thing i touch in bios is disable turbo, and downclock cpu to be able work normaly in games,
In intel streestest on 100c cpu throttle, and vcore voltage maximum is 1,232 by hwmonitor yesterday when i was checking.
 
Your case and cooling is reasonable.
Your ambient is normal.
I think your cooler is inadequate for such a strong processor.
It can get quite hot running full out.
At idle, most any effective cooler should run cooler.
Possibly, yours is defective.
Is the cooler fan running at it's max of 1800 rpm?
the 92mm fan is not going to move much air.

I would replace it with a quality unit like a noctua NH-U12s.
If you want the very best for now and in the future, look at the Noctua NH-D15s.
Noctua now comes in Chromax black versions if you are offended by the original beige color.

The purpose of the intel burn test is explicitly that, run instructions that generate maximum heat. Not realistic.
See how you do stressing with other testing apps that might be more like actual apps.
A simple one is cpu-Z stress test. OCCT, I think might also be more realistic.
 
Nov 24, 2020
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I will see to replace cooler but for now i cant do that dont have money to buy new one, anyway is it possible that power outage damage cooler? because after that power cuts cpu start overheating before that on full load it was 72 to 75c. Will test now with cpu-Z test and tell you resaults.
 
I doubt that a power failure would damage the cooler.
Possibly the fan if it is not running at top rpm.
See what rpm is shown on HWmonitor.
You can also temporarily take the case side cover off and direct a house fan at the inards which will help cooling
 
Not too bad, considering.
I am bothered by the 50c. minimum temperatures.
The cooler has a pushpin mount, similar to the stock intel cooler.

Give another try at remounting it.
Here is my stock instructions for the intel cooler.
Pay particular attention to verifying that all 4 pushpins are through the motherboard and locked.
The key to getting the cooler on level is to simultaneously push down on a DIAGONAL pair of pins.

----------------how to mount the stock Intel cooler--------------

The stock Intel cooler can be tricky to install.
A poor installation will result in higher cpu temperatures.
If properly mounted, you should expect temperatures at idle to be 10-15c. over ambient.

To mount the Intel stock cooler properly, place the motherboard on top of the foam or cardboard backing that was packed with the motherboard.
The stock cooler will come with paste pre applied, it looks like three grey strips.
The 4 push pins should come in the proper position for installation, that is with the pins rotated in the opposite direction of the arrow,(clockwise)
and pulled up as far as they can go.
Take the time to play with the pushpin mechanism until you know how they work.

Orient the 4 pins so that they are exactly over the motherboard holes.
If one is out of place, you will damage the pins which are delicate.
Push down on a DIAGONAL pair of pins at the same time. Then the other pair.

When you push down on the top black pins, it expands the white plastic pins to fix the cooler in place.

If you do them one at a time, you will not get the cooler on straight.
Lastly, look at the back of the motherboard to verify that all 4 pins are equally through the motherboard, and that the cooler is on firmly.
This last step must be done, which is why the motherboard should be out of the case to do the job. Or you need a case with a opening that lets you see the pins.
It is possible to mount the cooler with the motherboard mounted in the case, but you can then never be certain that the push pins are inserted properly
unless you can verify that the pins are through the motherboard and locked.

If you should need to remove the cooler, turn the pins counter clockwise to unlock them.
You will need to clean off the old paste and reapply new if you ever take the cooler off.
Clean off old paste with alcohol and a lint free paper like a coffee filter.
Apply new paste sparingly. A small rice sized drop in the center will spread our under heat and pressure.
Too much paste is bad, it will act as an insulator.
It is hard to use too little.

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Nov 24, 2020
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Problem with this i dont have stock cooler i buy pc with this one in it, my dad help me today to remount this one and that 4 pins one of it was not good, we repair it put new thermal paste, also before my cooler was like you can move him way to much left and right now when we done this its stick to the cpu, maybe it need to be little movey, but i cant find that on internet for that cooler.
 
Problem with this i dont have stock cooler i buy pc with this one in it, my dad help me today to remount this one and that 4 pins one of it was not good, we repair it put new thermal paste, also before my cooler was like you can move him way to much left and right now when we done this its stick to the cpu, maybe it need to be little movey, but i cant find that on internet for that cooler.
Good,
How are your idle temperatures now?
How about a full load?
 
Nov 24, 2020
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They are same, idle is 53 54, and full load on cpu-z is again is 83c max temp, but one thing need to ask in bios i set 4,0ghz clock of cpu and cache i put 4,4ghz, did i need to lower cache bcs i looking on internet now and they said about 300mhz lower then clock is good for normal not overlock user.
 
It has been a long time since I overclocked a 4690K.
How well you can do will be determined by your luck in getting a good chip.
My approach was simple. Leave all voltages on auto.
Gradually increase the all core multiplier and stress test.
OCCT is a useful test and will shut down the test if temperatures reach 85c.
Monitor your vcore voltage with cpu-Z. You should not reach 1.4v
When you reach your limit, back off a single multiplier and go with that.
If cpu-Z shows your multiplier fluctuating, that is good.
If not, implement speedstep and adaptive voltage.
That will reduce the multiplier and associated voltage when the cpu has little to do.
 
Nov 24, 2020
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With a single mulipiler and i put just to be safty for me 4,0ghz and 3,7 cache, voltages are on default, max temp in occt is 70c, vcore is 1,184,
 
Nov 24, 2020
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I done cpu-z test now, with same setting as i told you with one multiplier, and in cpu-z max temp was 91c and nearly same voltages on vcore.
 
Nov 24, 2020
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So there is possible something damaged from power outages, hope when i buy new cooler everything be alright.
Thank you so much for helping.
 

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