Question Intel i9900k 100 degrees on cinebench and heating up a lot in games

Jun 24, 2022
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Hello, I have just built a pc from my old components and tested it. it passed already a week and i think my CPU is a little too hot.

my specs are:
GTX 1070 founders edition

Intel Core i9-9900K not overclocked cooled with an enermax AIO 360mm watercooler

32 gb corair venegance RAM DDR4-3200 / PC4-25600 DDR4 SDRAM UDIMM

MSI MPG Z390 GAMING PRO CARBON (MS-7B17)

running valorant at max settings i usually have 50-60 degrees but considering only 30% cpu usage of my cpu and 30-40% GPU while running valorant. This shouldnt happen i think. Also ive run some tests in cinebench and immediately when running the multicore benchmark my cpu got to 100C. I got scared and canceled the benchmark because 100C doesnt sound so good. i checked the temperetures with Speccy. I have also 4 fans installed in my pc i might also just post an image of it.

View: https://imgur.com/a/AIazsXv


thanks if you can help me.
 
Jun 24, 2022
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Okay, how many of those fans are set to intake air? It’s important to have fresh airflow.
If I'm not mistaken the two on the bottom should blow out the air and the two next to my mainboard should intake air. And my aio on top blows air out.
 

KananX

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If I'm not mistaken the two on the bottom should blow out the air and the two next to my mainboard should intake air. And my aio on top blows air out.
Change the AIO to intake as well, it’s good to have positive air pressure and more fresh air in general. I think this could improve it, though I hope the AIO itself is working correctly. Also check if the AIO is seated correctly on the CPU.
 
Jun 24, 2022
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Change the AIO to intake as well, it’s good to have positive air pressure and more fresh air in general. I think this could improve it, though I hope the AIO itself is working correctly. Also check if the AIO is seated correctly on the CPU.
How can I change the direction of my aio? Also does it matter if my aio is dc or pwm in bios? I think the aio is okay because I don't think a cpu could run Valorant at 50-60 degrees without a working cooler. and the pump is also installed correctly I checked it yesterday.
 

KananX

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How can I change the direction of my aio? Also does it matter if my aio is dc or pwm in bios? I think the aio is okay because I don't think a cpu could run Valorant at 50-60 degrees without a working cooler. and the pump is also installed correctly I checked it yesterday.
PWM has better fan control. Unmount the radiator and flip the fans, or flip the radiator itself if possible. Is the CPU overclocked or stock?
 
Jun 24, 2022
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PWM has better fan control. Unmount the radiator and flip the fans, or flip the radiator itself if possible. Is the CPU overclocked or stock?
It is not overclocked no. I might try to flip my radiator. But how am I supposed to flip my pump? It has a certain position it has to stay in.
 
Jun 24, 2022
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To be honest these temps are atrocious, 60° at low usage isn’t good either for such a big aio. Please read this: https://www.tomshardware.com/news/enermax-liqmax-3-recall

It could be faulty.
I read the article and it says only Korean AIOs are affected. The ones from the US could also be affected but I live in Germany so the chances that my watercooler is from Korea is almost 0. would you consider for me to buy a new watercooler?
 

KananX

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I read the article and it says only Korean AIOs are affected. The ones from the US could also be affected but I live in Germany so the chances that my watercooler is from Korea is almost 0. would you consider for me to buy a new watercooler?
As soon as you put mild usage on CPU you have relatively high temps of 60° and as soon as something relatively high usage comes it pegs out at 100° and throttles so I would say this cooler is not working right. Imagine Prime95 has even way more load than CB. I would RMA this thing, they will replace it with a working one, should be no problem as you still have warranty after just one year.
 
Jun 24, 2022
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As soon as you put mild usage on CPU you have relatively high temps of 60° and as soon as something relatively high usage comes it pegs out at 100° and throttles so I would say this cooler is not working right. Imagine Prime95 has even way more load than CB. I would RMA this thing, they will replace it with a working one, should be no problem as you still have warranty after just one year.
I just checked how to send the aio watercooler back and you can only do it if you bought it straight from Korea. Also I can't use my warranty because I have no idea where my receipt is. I think I will buy a new cooler but would you suggest to buy a AIO or a cpu-fan?
 

KananX

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I just checked how to send the aio watercooler back and you can only do it if you bought it straight from Korea. Also I can't use my warranty because I have no idea where my receipt is. I think I will buy a new cooler but would you suggest to buy a AIO or a cpu-fan?
I’m a fan of regular coolers like Noctua D15, it’s really reliable and will do a good job for 10 years and there’s no coolant that can clog up or spill out, the only downside is clearance for RAM and it looks “different” but that’s a matter of taste. You can check everything here: https://noctua.at/de/products/cpu-cooler-retail/nh-d15
 
Jun 24, 2022
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I’m a fan of regular coolers like Noctua D15, it’s really reliable and will do a good job for 10 years and there’s no coolant that can clog up or spill out, the only downside is clearance for RAM and it looks “different” but that’s a matter of taste. You can check everything here: https://noctua.at/de/products/cpu-cooler-retail/nh-d15
i will think about this thanks thought I wouldn't need to buy anything new. Anyways thank for the answers I will leave this thread open in case anyone wants to add something.
 

boju

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@punkncat

11600k IBT default 1024mb
View: https://i.imgur.com/RTymeeS.jpg


11700k IBT 8GB, took a lot longer to get through 2 rounds than default ram amount. I'll settle for 81c in IBT. Ambient temp 18c.
View: https://i.imgur.com/zY1onJd.jpg


Not bad for the D15, was anxious about it being much higher. Idles 27~31 fluctuating between 800MHz to 5GHz. Case, lian li lancool II mesh performance. With evaporative cooling in summer the floor area where the case is near gets to around 20c. So glad it worked out, was getting worked up over nothing :)

As for performance difference between the two, cpu usage dropped a bit in Ghost Recon WL with 11700k as expected while still managing same fps avgs with 1080Ti. Farcry 6 no different. Not a lot different really, but wasn't expecting any. When i do get my hands on games that do count threads i'll be glad i got it whilst till available new and not from some ebay seller.
D15 should do a good job, as with my experience with 11700k, no mce just default 4.6 turbo. Quoted my reply from ambassador forum. Hope it helps.

Hsf all the way though imo. Pumps will always eventually fail at some point. Hsf last a lifetime.
 

uWebb429

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@Punkvibes
Use HWiNFO to check what your VCore voltage is when Cinebench is running. Also use HWiNFO to double check your temperatures. Are all cores near 100°C or is it just one core that is hitting this temperature?

Some motherboards use excessive voltage for the CPU at default settings. This can add a lot of heat during full load stress tests like Cinebench. With a 280 mm cooler my Cinebench temps on a 10 core CPU are only 65°C. Did you use enough thermal paste? How did you apply it?

 
Jun 24, 2022
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@Punkvibes
Use HWiNFO to check what your VCore voltage is when Cinebench is running. Also use HWiNFO to double check your temperatures. Are all cores near 100°C or is it just one core that is hitting this temperature?

Some motherboards use excessive voltage for the CPU at default settings. This can add a lot of heat during full load stress tests like Cinebench. With a 280 mm cooler my Cinebench temps on a 10 core CPU are only 65°C. Did you use enough thermal paste? How did you apply it?

it runs at a maximum of around 1.3V i dont know if thats too high. i also throttled it by 102.5 mV down so now it is 10 degrees cooler in Valorant at least im gonna test cinebench later
 

uWebb429

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i also throttled it by 102.5 mV
Throttling is when you slow a CPU down. Reducing the voltage is called undervolting. Less voltage equals less heat for the same performance.

Many Intel CPUs are 100% stable at an undervolt of -75 mV. It can help but it would be a good idea to have a look at your cooler to see if your last thermal paste application is covering the majority of the CPU.
 

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