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  • Core i9-9900K (8, LGA 1151, 3.60GHz)
  • Core i9-9900K (8, LGA 1151, 3.60GHz)
  • Core i9-9900K (8, LGA 1151, 3.60GHz)
CHF 549.–
Intel Core i9-9900K (8, LGA 1151, 3.60GHz)

Bewertung zu Intel Core i9-9900K (8, LGA 1151, 3.60GHz).

User Wyrx
Core i9-9900K - Tray (8, LGA 1151, 3.60GHz)

Not as hot as expected

I was a bit worried about all the reviews, criticizing how this CPU can't keep up its boost frequencies over long periods of time due to excessive heat. Because of that, I specifically bought a Noctua NH-D15, because it's "the best air cooler, that can even measure with water cooler".

I let the CPU work on some raytracing app I wrote long ago. The app can put 100% load consistently on all cores.
It's been running for over 3 hours, the CPU has been clocked at 4.7 GHz (stock boost frequency for all 8 cores) this entire time without dropping even once, and the temperature is around 50-55 °C with the fans in "silent mode".

Maybe the 9900K really does get very hot, and the NH-D15 is just that good, but judging by those temps, I could try and overclock this CPU.

At stock frequencies, it vastly outperforms my old 6700K.
At least I can finally play Assassin's Creed Odyssey without constant microstuttering.
This CPU is probably not worth upgrading to for those who own the newer 7700K or 8700K, but for any who seek gaming performance, this is a pretty good CPU.

Diese Bewertung wurde für eine andere Variante erstellt: Core i9-9900K - Tray (8, LGA 1151, 3.60GHz)

09.11.2018
10 Kommentare
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User rivendare

You probably have one of the very few motherboard that respects the 95W tdp of this CPU. But in this config, this CPU is not as fast as in most reviews you can see online. You should only get around 4.2Ghz sustained. I would triple check this.

This is why you get low temps. If you activate any OC feature like xmp + Asus optimized settings, multi core enhancement, ... then you will get the temps like everyone else. Gamers Nexus and Hardware Unboxed did a very good video on this.

19.11.2018
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User Wyrx

@Rivendare
Disclaimer:
I'm using AIDA64 for my hardware monitoring.

I double-checked using AIDA64's system stress test. The test ran for ~15 minutes.
During the system stress test, core temperatures were stable around 75° - 85° with occasional drops below 75° and peaks above 90°.
The frequency remained at 4.7 GHz with no throttling at all.
The power value for CPU package were around 150 - 160 W.
I have XMP enabled, with my RAM clocked at 3 GHz (2x 1500 MHz).

Out of curiosity I tried increasing the multiplicator for all cores to 50 (5 GHz on all cores).
During the stress test, temperatures immediately reached the 100° point with 10% throttling on the CPU.

19.11.2018
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User rivendare

The temps from AIDA64 are more like what reviewers were telling us :)

But I agree that they are all trying to push for AMD (which is good for competition) but to do so they become a bit too alarmist for my taste, and they only focus on temps from stress tests. In real world, in games and apps like your DXR app, the temps are nowhere near those stress test temps. Thanks for the sharing

04.12.2018
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User Wyrx

I just encountered a case, where temperatures can become problematic in a real-world scenario.
I just bought a new NAS and decided to rip all my movies (DVD and Bluray) to it. For some reason, Handbrake couldn't detect the CPU's QuickSync encoder after I installed Intel's new UWD (Universal Windows Drivers), so I had to use the software encoder x265 instead.

While encoding the video files, my CPU temps were around 70-80°C. After a few hours, the temperatures increased to 80-90° and even reached 100°. I decided to open my case's front door, as well as open my room's door and windows, and the temperatures eventually returned to 70-80°C. My PC has been encoding without any throttling for over 16 hours while keeping those temps stable.

Basically, yes, this CPU can run very hot in some extreme situations, but as long as you have air conditioning (or open the window), you shouldn't worry too much about it, even with air cooling.

To be fair, if video encoding is something you do often and for extended durations, I'd recommend a Threadripper anyway, because for those workloads, more cores > higher clock rates.

05.12.2018
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User freeform2020

Hey thanks for the review. I'm considering upgrading my 6700k for this. I also have the same D15 cooler. Is there a noticeable speed difference in day-to-day use @ stock speeds?

06.07.2019
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User Burton1224

@Freeform2020 4cores 8threads vs 8 cores 16 threads and a refreshed architecture yes there is a big difference and you can use it also above base clock without thermal problems.

06.07.2019
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User rivendare

@freeform2020 unless you have a compatible motherboard already and are really just changing the CPU and nothing else, I would strongly suggest waiting, because AMD Ryzen 3000 series are literally releasing this sunday (07.07.2019) and it seems they will be destroying Intel whole 9000 series except maybe the 9900k.

Even of you hate AMD for some reason, wait at least that Intel drops the price on the 9900k.

06.07.2019
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User Burton1224

@Rivendare well destroys is maybe the wrong word 7nm TSMC vs 14nm Intel is just a little bit a disappoiting result currently but they are better now and still way better priced.

06.07.2019
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User freeform2020

Thanks for the reply guys, I was planning on waiting until AMD drop their 3k's but just wanted to know if this was worth it now, because I remember it already being a bit more expensive before? Why is the K less than the KF now? I'm not really an AMD fan, never really have been. I'd have to do some research when they drop to see what they're all about. I do a lot of photoshop work and occasionally video work with Davinci Resolve.

06.07.2019
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