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Intel Core i9-10900K Review — Intel’s way of saying MOAR CORES

Intel Core i9-10900K Review — Intel’s way of saying MOAR CORES

by May 20, 2020

Intel went all out with the 10th Gen Intel Core processors, pushing the Skylake microarchitecture and 14nm process node to the limits with more cores and higher clocks than its predecessors. The Intel Core i9-10900K is Intel's answer to AMD's flagship Ryzen 9 processors, with ten cores running at up to 5.3 GHz. Is it a good option for gamers though?


3-year warranty


US: $488 (SRP)


+ More cores at higher clocks is a great combination
+ Chart-topping gaming performance
+ More overclocking headroom than the competition
+ Relatively easy to cool
+ Better value for money than previous generation


- Power consumption is quite significant
- Productivity performance is starting to lag behind competition

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The Intel Core i9-10900K is faster and better than its predecessors, but who is it for exactly?

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Intel’s latest 10th Gen Intel Core processors have been official since the end of last month, and now it’s time for the performance data. The 10th Gen Intel Core processors are quite an interesting set of processors with more cores and threads than their processors. But let’s take a look at the flagship option first, the Intel Core i9-10900K.

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Intel went with the new thin die STIM, although you won’t notice any differences from the outside. Intel still maintains cooler compatibility with the LGA115x processors, so you won’t need a new cooler with this. It also means that the entire CPU package is the same height despite a thinner die to improve thermal dissipation. Intel made up for the height difference of the unlocked K-series processors with a thicker IHS, although it looks exactly the same from the outside.

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On the underside is the 1200 pads that will contact the 1200 pins in the LGA 1200 socket. Of course, we didn’t count them. There’s a significant amount of SMD components packed into the center area of the socket.

Intel Core i9-10900K Specifications

Cores / Threads 10C/20T
Base Clock / Max Boost 3.7 / 5.2 GHz (5.3 GHz with TVB)
All Core Boost 4.8 GHz (4.9 GHz with TVB)
Cache 20MB L3 cache
Memory Up to 128GB, 2-channel, DDR4-2933
Integrated Graphics Yes, UHD Graphics 630 up to 1.2 GHz
PCIe 16 lanes, PCIe 3.0
TDP 125W
Process 14nm
Socket LGA 1200

Test System

CPU Intel Core i9-10900K
Cooler Cooler Master ML240R
Motherboard ASUS ROG Maximus XII Formula
Memory 2 x 8GB T-FORCE XTREEM ARGB DDR4-3600 CL14
Storage Kingston UV400 120GB
Kingston UV500 1TB
Seagate FireCuda SSHD 1TB
Power Supply Cooler Master V850

For the stock settings, we set the BIOS to enforce all of Intel’s limits, and all the voltages are auto. The overclocked results are obtained by setting the multiplier to 51 and manually entering 1.355V for Vcore. Now, let’s take a look at the performance data.


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Starting off with Cinebench, we can see that the single-core performance isn’t significantly better than the competition right now, even though the Intel Core i9-10900K runs at quite substantially higher clocks. With that said, the multi-core performance is still very formidable thanks to more cores running at higher clocks than ever.

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In Realbench, we see that the performance is also very impressive, owing to the multiple cores crunching away. Be it image editing or video encoding, the Intel Core i9-10900K does extremely well at it. I mean, this is exactly what you would expect from a flagship chip from Intel.

7zip is where we somehow see the Intel Core i9-10900K falter a bit. The compression places an emphasis on the cache, and it seems like the higher amount of cache that the AMD processors offer give it enough performance to compete against the higher core count of the Intel Core i9-10900K. Decompression sees a different story, with the extra cores and clocks pulling their weight.

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In 3DMark, the extra cores and higher clocks show their advantage over AMD’s mid-range processors.


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While 3DMark shows a pretty strong lead, in reality it doesn’t really pull that far ahead when in actual games. In CPU-bound games like Rainbow Six Siege you will be able to observe a sizeable performance gap between the Intel Core i9-10900K and the 6-core AMD parts, but in more recent titles like AC Odyssey, the gap quickly shrinks, before going away altogether with games like Division 2. With that said, it is undeniable that Intel does have the superior gaming chip here, but we are comparing against AMD’s mid-range offerings here.


We decided to test the power draw with Realbench v2.56’s stress test instead of synthetic workloads which pull unrealistic amounts of power. Realbench is somewhat more realistic, instead stressing the system with simultaneous image editing, video encoding and file compression.

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Before we got about to overclocking, we ran the CPU with the stock settings. You can see that it pulls a rather significant 191.81W on average, before throttling down to its 125W TDP. Clocks then drop from 4.9 GHz to settle down to around 4.3 GHz, with the random spike here and there.

Thermals are quite well-managed as it doesn’t even break 70°C in our testing, unlike the rather scary omen that an earlier leak brought to us. Intel designed the Intel Core i9-10900K to boost to really lofty clocks even when running on all cores, which offers a nice boost to overall performance.

Intel Core i9-10900K OC 5.1 ghz Realbench

After slapping on a healthy overclock to reach 5.1 GHz at 1.355V, we see that the CPU now draws 207.66W on average throughout the 15-minute Realbench stress test. That’s a pretty significant increase although one which I do find to still be very manageable with a good 240mm AIO cooler like the MasterLiquid ML240R we used for the tests. Temperatures now hover at around 76°C.


As with most Intel overclocks, all you need to do is to change the multiplier and you are ready to go. To get a rough idea of the stability, we ran Realbench for 15 minutes, which also utilizes the AVX CPU extensions, which might make many CPUs falter. Without an AVX offset, our sample of the Intel Core i9-10900K managed to pull off 5.1 GHz at 1.355V without crashing in Realbench, which I do consider pretty impressive. Spending a bit more time on the Intel Core i9-10900K might yield even more impressive overclocks, although you might want to pair the processor with a suitably high-end motherboard as the Intel Core i9-10900K’s power draw is not something to scoff at.


Intel holds the upper hand in terms of clock speed over the competition, and that benefit is clearly seen in older games. However the advantage quickly dissipate once you start playing modern titles which are more GPU-limited, in addition to being able to take advantage of more cores, which is a card in AMD’s favor. With that said, the Intel Core i9-10900K closes the gap a little when it comes to core count, and the ability to deliver the higher clocks on more cores than Intel has ever offered makes the Intel Core i9-10900K a much more compelling option than its predecessors.

For $488 (~RM2125) a pop, the Intel Core i9-10900K is not cheap, but it is offered at exactly the same price as the previous generation’s 8-core SKU, so you are getting a bit more value out of Intel with this generation. It’s still quite difficult to recommend Intel’s flagship chip, as gamers will get better value from the mid-range segment rather than at the top-of-the-line. Gaming performance seen here is also pretty similar to the Core i5-10600K’s, which makes the Intel Core i9-10900K harder to recommend to gamers.

With more cores, you might also want to use it for heavy multi-threaded workloads. However the microarchitecture is beginning to show its age with poorer performance and a relatively high power draw. There’s also the case of AMD offering more cores for around the same amount of money.

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Enthusiasts might opt for the Intel Core i9-10900K though as it offers more overclocking fun than the competition, although that’s probably something of less importance to a lot of people. You will need to get a good (read: expensive) motherboard and cooler if you want to take full advantage of the Intel Core i9-10900K.

Our thanks to Intel for sending us the Intel Core i9-10900K for review.

About The Author
Vyncent Chan
Technology enthusiast, casual gamer, pharmacy graduate. Strongly opposes proprietary standards and always on the look out for incredible bang-for-buck.