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CPU temperature


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#1 Sangre

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Posted 16 April 2015 - 03:21 AM

Hi! I've upgraded to i7 4790k recently and the temperature seams to be high. I work as a graphics designer and use 3ds max Mental Ray render which makes all cores go up to 100°C at almost 4000MHz under full load.

While playing Metal Gear Rising on ultra, the temperature stayed below 80°C for the most part.

On idle it's usually below 30°C

I'm using Z97 motherboard chipset and set the CPU to turbo boost mode in BIOS. 

I'm using a stock cooler with a questionable polish thermal paste called "Pasta Silikonowa". Can a thermal paste affect the temperature so much? Or is the stock cooler not doing it's job? Would water cooling fix the high temperature?

 

Thanks!


Edited by Sangre, 16 April 2015 - 03:36 AM.


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#2 Citizen_WD

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Posted 16 April 2015 - 05:06 AM

Hi there Sangre,
First of all I would like to point out that 100, or even 80 degrees is way too high temperature for this, or in fact, any processor. It should be at idle - 34 to 39°C, normally 55 to 65°C and 70°C at most, under maximum load. You need to take immediate measures as you can destroy the processor and cause instabilities in the hardware of the system. I'm surprised that your PC doesn't reboot. How do you monitor the temperature ? Are you sure that the readings are accurate?
You need to change the cooling fan to a much more sufficient one, change the thermal paste as the one applied is almost certainly not doing it's job. After that you can use the PC under high loads, constantly monitoring the temperatures. Water cooling is also an adequate solution, but it is more often used when noise levels need to be kept as low as possible, and it's also pricey and complicated.  I'd say go for a conventional cooling at first and see how that goes.
 
Hope this was helpful, Citizen_WD


#3 Sangre

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Posted 16 April 2015 - 05:18 AM

I'm using Core Temp 1.0 RC6 for monitoring. I'll reaply a better paste and see if the temperature stayes the same with the stock cooler. If not, I'll probably have to buy an after market heatsink. The Noctua NH U12S has some good reviews.


Edited by Sangre, 16 April 2015 - 05:19 AM.


#4 Datcoolguy

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Posted 16 April 2015 - 08:45 AM

It won't melt down for short usages at 100°C (i had an old laptop running without a fan, trust me i know) but for extended usage it is gonna age your i7 pretty fast, it could be that the sensor went out, but  what cooling solution are you using for the CPU?


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#5 Sangre

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Posted 16 April 2015 - 08:59 AM

It won't melt down for short usages at 100°C (i had an old laptop running without a fan, trust me i know) but for extended usage it is gonna age your i7 pretty fast, it could be that the sensor went out, but  what cooling solution are you using for the CPU?

I've installed it yesterday with the stock heatsink that comes with the CPU. And like I said I've applyed a cheap thermal paste of an unknown brand.


Edited by Sangre, 16 April 2015 - 09:00 AM.


#6 Datcoolguy

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Posted 16 April 2015 - 09:19 AM

Since you work with it, it might be a good business investment to get a good cooling solution, while stock fans are good, if you are gonna use it on heavy loads constantly you'd want something better imho, wether it be a better cooler fan/heatsink or some sort of water based cooling system. 

 

And get proper thermal paste for the instalation too, but for now, is the fan running at max when the CPU reaches 100°C?


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#7 Sangre

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Posted 16 April 2015 - 09:26 AM

And get proper thermal paste for the instalation too, but for now, is the fan running at max when the CPU reaches 100°C?

I can hear it get much louder when the temperature rise. The Core Temp doesn't show the fan speed so not sure if it's at max...


Edited by Sangre, 16 April 2015 - 09:26 AM.


#8 coxchris

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Posted 16 April 2015 - 10:18 AM

Intel processors have a emergency shutdown aspect to them even if the thermal temperature reaches up to 100 Like the above poster No processor can handle that.

 

You brought a K processor so are you using the unlock core or overclocking.

 

Since a emergency is present with your CPU I would buy Arctic Silver 5 you can find it at radio shack

 

http://www.newegg.com/Product/Product.aspx?Item=9SIA6922R12413&nm_mc=KNC-GoogleMKP-PC&cm_mmc=KNC-GoogleMKP-PC-_-pla-_-Thermal+Compound+%2f+Grease-_-9SIA6922R12413&gclid=CjwKEAjwu72pBRC9hsn2-e34vRUSJACnSYsT8d3k4KXiZeR3wGggVm975xVoPBFRRuOoImZlIvXANhoCDd_w_wcB&gclsrc=aw.ds

 

What are the temperature at idle (BIOS temps)? 


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#9 Datcoolguy

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Posted 16 April 2015 - 10:22 AM

I'll just reafirm my opinion that if it is a work machine, specially for graphic design you should get a more advanced cooling setup for the processor


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#10 Sangre

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Posted 16 April 2015 - 10:25 AM

I'll just reafirm my opinion that if it is a work machine, specially for graphic design you should get a more advanced cooling setup for the processor

Yeah, I guess I'll have to shill out some more money on Noctua cooler.



#11 coxchris

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Posted 16 April 2015 - 10:49 AM

I found some alternatives to water cooler but this is a big air cooler 

 

http://www.newegg.com/Product/Product.aspx?Item=N82E16835608045


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