Intel Core i9-9900X vs Intel Core i9-9900K
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Intel Core i9-9900X vs Intel Core i9-9900K
Comparison of the technical characteristics between the processors, with the Intel Core i9-9900X on one side and the Intel Core i9-9900K on the other side. The first is dedicated to the high-end desktop computer sector, It has 10 cores, 20 threads, a maximum frequency of 4,4GHz. The second is used on the desktop segment, it has a total of 8 cores, 16 threads, its turbo frequency is set to 5,0 GHz. The following table also compares the lithography, the number of transistors (if indicated), the amount of cache memory, the maximum RAM memory capacity, the type of memory accepted, the release date, the maximum number of PCIe lanes, the values obtained in Geekbench 4 and Cinebench R15.
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Specifications:
| Processor | Intel Core i9-9900X | Intel Core i9-9900K | ||||||
| Market (main) | High-end desktop computer | Desktop | ||||||
| ISA | x86-64 (64 bit) | x86-64 (64 bit) | ||||||
| Microarchitecture | Skylake | Coffee Lake | ||||||
| Core name | Skylake-X | Coffee Lake-S | ||||||
| Family | Core i9-9000 | Core i9-9000 | ||||||
| Part number(s), S-Spec | BX80673I99900X, BXC80673I99900X, SREZ7 |
BX80684I99900K, BXC80684I99900K, CM8068403873914, SRELS, QQPP |
||||||
| Release date | Q4 2018 | Q4 2018 | ||||||
| Lithography | 14 nm++ | 14 nm++ | ||||||
| Cores | 10 | 8 | ||||||
| Threads | 20 | 16 | ||||||
| Base frequency | 3,5 GHz | 3,6 GHz | ||||||
| Turbo frequency | 4,4 GHz | 5,0 GHz | ||||||
| Bus speed | 8 GT/s | 8 GT/s | ||||||
| Cache memory | 19,25 MB | 16 MB | ||||||
| Max memory capacity | 128 GB | 128 GB | ||||||
| Memory types | DDR4-2666 | DDR4-2666 | ||||||
| Max # of memory channels | 4 | 2 | ||||||
| Max memory bandwidth | 85 GB/s | 41,6 GB/s | ||||||
| Max PCIe lanes | 44 | 16 | ||||||
| TDP | 165 W | 95 W | ||||||
| Suggested PSU | 700W ATX Power Supply | 600W ATX Power Supply | ||||||
| GPU integrated graphics | None | Intel UHD Graphics 630 (Coffee Lake) | ||||||
| GPU execution units | — | 23 | ||||||
| GPU shading units | — | 184 | ||||||
| GPU base clock | — | 350 MHz | ||||||
| GPU boost clock | — | 1200 MHz | ||||||
| GPU FP32 floating point | — | 423,2 GFLOPS | ||||||
| Socket | LGA2066 | LGA1151 | ||||||
| Compatible motherboard | Socket LGA 2066 Motherboard | Socket LGA 1151 Motherboard | ||||||
| Maximum temperature | 92°C | 100°C | ||||||
| CPU-Z single thread | 556 | 573 | ||||||
| CPU-Z multi thread | 5. 865 |
5.565 | ||||||
| Cinebench R15 single thread | 190 | 218 | ||||||
| Cinebench R15 multi-thread | 2.130 | 2.065 | ||||||
| Cinebench R20 single thread | 460 | 500 | ||||||
| Cinebench R20 multi-thread | 5.400 | 4.910 | ||||||
| Cinebench R23 single thread | 1.173 | 1.299 | ||||||
| Cinebench R23 multi-thread | 13.985 | 12.390 | ||||||
| PassMark single thread | 2.581 | 2.969 | ||||||
| PassMark CPU Mark | 21. 713 |
18.811 | ||||||
| (Windows 64-bit) Geekbench 4 single core |
5.292 | 6.336 | ||||||
| (Windows 64-bit) Geekbench 4 multi-core |
37.815 | 36.463 | ||||||
| (Windows) Geekbench 5 single core |
1.206 | 1.324 | ||||||
| (Windows) Geekbench 5 multi-core |
11.281 | 8.718 | ||||||
| (SGEMM) GFLOPS performance |
1.249 GFLOPS | 588 GFLOPS | ||||||
| (Multi-core / watt performance) Performance / watt ratio |
229 pts / W | 384 pts / W | ||||||
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Note: Commissions may be earned from the links above.
We can better compare what are the technical differences between the two processors.
Suggested PSU: We assume that we have An ATX computer case, a high end graphics card, 16GB RAM, a 512GB SSD, a 1TB HDD hard drive, a Blu-Ray drive. We will have to rely on a more powerful power supply if we want to have several graphics cards, several monitors, more memory, etc.
Price: For technical reasons, we cannot currently display a price less than 24 hours, or a real-time price. This is why we prefer for the moment not to show a price. You should refer to the respective online stores for the latest price, as well as availability.
The processor Intel Core i9-9900X has more cores, the turbo frequency of Intel Core i9-9900K is bigger, that the thermal dissipation power of Intel Core i9-9900K is less. Both were produced in the same year.
Performances :
Performance comparison between the two processors, for this we consider the results generated on benchmark software such as Geekbench 4.
| CPU-Z — Multi-thread & single thread score | |
|---|---|
| Intel Core i9-9900X |
556 5.865 |
| Intel Core i9-9900K |
573 5.565 |
In single core, the difference is -3%. In multi-core, the differential gap is 5%.
Note: Commissions may be earned from the links above. These scores are only an
average of the performances got with these processors, you may get different results.
CPU-Z is a system information software that provides the name of the processor, its model number, the codename, the cache levels, the package, the process. It can also gives data about the mainboard, the memory. It makes real time measurement, with finally a benchmark for the single thread, as well as for the multi thread.
| Cinebench R15 — Multi-thread & single thread score | |
|---|---|
| Intel Core i9-9900X |
190 2.  130 |
| Intel Core i9-9900K |
218 2.065 |
In single core, the difference is -13%. In multi-core, the differential gap is 3%.
Note: Commissions may be earned from the links above. These scores are only an
average of the performances got with these processors, you may get different results.
Cinebench R15 evaluates the performance of CPU calculations by restoring a photorealistic 3D scene. The scene has 2,000 objects, 300,000 polygons, uses sharp and fuzzy reflections, bright areas, shadows, procedural shaders, antialiasing, and so on. The faster the rendering of the scene is created, the more powerful the PC is, with a high number of points.
| Cinebench R20 — Multi-thread & single thread score | |
|---|---|
| Intel Core i9-9900X |
460 5.  400 |
| Intel Core i9-9900K |
500 4.910 |
In single core, the difference is -8%. In multi-core, the differential gap is 10%.
Note: Commissions may be earned from the links above. These scores are only an
average of the performances got with these processors, you may get different results.
Cinebench R20 is a multi-platform test software which allows to evaluate the hardware capacities of a device such as a computer, a tablet, a server. This version of Cinebench takes into account recent developments in processors with multiple cores and the latest improvements in rendering techniques. The evaluation is ultimately even more relevant.
| Cinebench R23 — Multi-thread & single thread score | |
|---|---|
| Intel Core i9-9900X |
1.173 13.  985 |
| Intel Core i9-9900K |
1.299 12.390 |
In single core, the difference is -10%. In multi-core, the differential gap is 13%.
Note: Commissions may be earned from the links above. These scores are only an
average of the performances got with these processors, you may get different results.
Cinebench R23 is cross-platform testing software that allows you to assess the hardware capabilities of a device such as a computer, tablet, server. This version of Cinebench takes into account recent developments in processors with multiple cores and the latest improvements in rendering techniques. The evaluation is ultimately even more relevant. The test scene contains no less than 2,000 objects and more than 300,000 polygons in total.
| PassMark — CPU Mark & single thread | |
|---|---|
| Intel Core i9-9900X |
2.  58121.713 |
| Intel Core i9-9900K |
2.969 18.811 |
In single core, the difference is -13%. In multi-core, the differential gap is 15%.
Note: Commissions may be earned from the links above. These scores are only an
average of the performances got with these processors, you may get different results.
PassMark is a benchmarking software that performs several performance tests including prime numbers, integers, floating point, compression, physics, extended instructions, encoding, sorting. The higher the score is, the higher is the device capacity.
On Windows 64-bit:
| Geekbench 4 — Multi-core & single core score — Windows 64-bit | |
|---|---|
| Intel Core i9-9900X |
5.292 37.  815 |
| Intel Core i9-9900K |
6.336 36.463 |
In single core, the difference is -16%. In multi-core, the differential gap is 4%.
On Linux 64-bit:
| Geekbench 4 — Multi-core & single core score — Linux 64-bit | |
|---|---|
| Intel Core i9-9900K |
6.595 35.295 |
| Intel Core i9-9900X |
5.216 32.381 |
In single core, the difference is 26%. In multi-core, the difference in terms of gap is 9%.
On Mac OS X 64-bit:
| Geekbench 4 — Multi-core & single core score — Mac OS X 64-bit | |
|---|---|
| Intel Core i9-9900X |
5.652 43.922 |
| Intel Core i9-9900K |
6.  31735.651 |
In single core, the difference is -11%. In multi-core, the differential gap is 23%.
Note: Commissions may be earned from the links above. These scores are only an
average of the performances got with these processors, you may get different results.
Geekbench 4 is a complete benchmark platform with several types of tests, including data compression, images, AES encryption, SQL encoding, HTML, PDF file rendering, matrix computation, Fast Fourier Transform, 3D object simulation, photo editing, memory testing. This allows us to better visualize the respective power of these devices. For each result, we took an average of 250 values on the famous benchmark software.
On Windows:
| Geekbench 5 — Multi-core & single core score — Windows | |
|---|---|
| Intel Core i9-9900X |
1.  20611.281 |
| Intel Core i9-9900K |
1.324 8.718 |
In single core, the difference is -9%. In multi-core, the differential gap is 29%.
On Linux:
| Geekbench 5 — Multi-core & single core score — Linux | |
|---|---|
| Intel Core i9-9900X |
1.144 10.596 |
| Intel Core i9-9900K |
1.393 8.981 |
In single core, the difference is -18%. In multi-core, the differential gap is 18%.
On macOS:
| Geekbench 5 — Multi-core & single core score — macOS | |
|---|---|
| Intel Core i9-9900X |
1.159 10.861 |
| Intel Core i9-9900K |
1.  2568.607 |
In single core, the difference is -8%. In multi-core, the differential gap is 26%.
Note: Commissions may be earned from the links above. These scores are only an
average of the performances got with these processors, you may get different results.
Geekbench 5 is a software for measuring the performance of a computer system, for fixed devices, mobile devices, servers. This platform makes it possible to better compare the power of the CPU, the computing power and to compare it with similar or totally different systems. Geekbench 5 includes new workloads that represent work tasks and applications that we can find in reality.
Equivalence:
Intel Core i9-9900X AMD equivalentIntel Core i9-9900K AMD equivalent
See also:
Intel Core i9-9900Intel Core i9-9900KFIntel Core i9-9900KSIntel Core i9-9900T
Intel Core i9-9900X vs Intel Core i9-9900K.
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More info
General Specifications
Brand
Intel
Intel
Model
Core i9-9900X
Core i9-9900K
Origin
China
China
About the Product
The Intel Core i9-9900X is the top processor for the Intel LGA 2066 desktop platform.
This processor has 10 cores that operate at a nominal clock speed of 3.5 GHz, 4.4 GHz in Turbo Boost mode and 4.5 GHz in Intel Turbo Boost Max 3.0 mode.
New 9th Gen Intel Core i9-9900K processor, codenamed Coffee Lake microarchitecture. Designed for Intel LGA 1151 desktop platform. Belongs to the family of high-performance Core i9 processors.
Package Size
Height
4.6 in.
4.61 in.
Width
4 in.
4.41 in.
Depth
2 in.
2.91 in.
Weight
2.28 lbs.
1.1 lbs.
-
Height
-
Width
-
Depth
Intel Core i9-9900X
Intel Core i9-9900K
Intel Core i9-9900X
Intel Core i9-9900K
Intel Core i9-9900X
Intel Core i9-9900K
Details
Socket
FCLGA2066
FCLGA1151
Lithography
14 nm
14 nm
Type of Processors
Desktop
Desktop
Code Name
Skylake
Coffee Lake
What customers say about «Details»
Intel Core i9-9900X CPU Processor
- Excellent processor, works as expected, handles any process with ease.
Installation was easy. - Great type of socket. Runs everything I want to.
- I love this processor! This socket type is ideal for its power.
- Great socket type. Installing the processor was not difficult.
- I really liked this processor. The installation was quick thanks to its socket.
Intel Core i9-9900K Desktop Processor
- It is easy to install and overclock.
- Install and overclocking on this chip went extremely well.
- This chip is a beast. Very easy to install.
- Installed easily and not issues building on Asus Maximus mobo.
- 7 days after install it died. Horrible job intel.
Technical Specifications
CPU Threads
Clock Speed
3.5 GHz
3.6 GHz
Turbo Clock Speed
4.4 GHz
5 GHz
Max TDP
165 W
95 W
Max Temperature
92 °C
100 °C
Data Width
64 bits
64 bits
Virtualization Technology
Yes
Yes
CPU Cores
-
CPU Threads
-
Max TDP
-
Max Temperature
-
Virtualization Technology
-
Data Width
Intel Core i9-9900X
Intel Core i9-9900K
Intel Core i9-9900X
Intel Core i9-9900K
Intel Core i9-9900X
Intel Core i9-9900K
Intel Core i9-9900X
Intel Core i9-9900K
What customers say about «Technical Specifications»
Intel Core i9-9900X CPU Processor
- Very good processor.
I went from an i7 and the performance in the speed of my computer to improved. - A great choice if you need large-scale power and performance.
- No problems with scrubbing or slowing down.
- This processor has allowed me to complete a project to complete the assembly of a PC. It works perfectly.
- I have no problems with this. It runs great with my pc.
Intel Core i9-9900K Desktop Processor
- Super fast gaming processor.
High performance. - The computer runs perfectly, very smoothly, without any cartons.
- This CPU is a beast! I installed this with a liquid cooler and even in the top end games out now it does not struggle to keep this thing cool.
- I had no issues installing the chip and it runs great.
- Easy to install, easy to boost, handles everything I throw at it.
Cache And Memory Specifications
L1 Cache Size
640 kB
256 kB
L2 Cache Size
10000 kB
2048 kB
L3 Cache Size
19250 kB
16000 kB
Max Memory Size
128 GB
128 GB
Memory Types
DDR4
DDR4
Max Memory Channels
Max Memory Bandwidth
85 GB/s
41.
6 GB/s
-
Max Memory Channels
-
L1 Cache Size
Intel Core i9-9900X
Intel Core i9-9900K
Intel Core i9-9900X
Intel Core i9-9900K
What customers say about «Cache And Memory Specifications»
Intel Core i9-9900X CPU Processor
- Pretty incredible CPU, it can handles everything we can throw at it. Works great with 64GB memory.
- Has enough cache for any task.
- Works great in video editor etc. Great amount of cache.
- Supports up to 128GB of storage which is great.
- Love it and have had no problems. Supports the latest memory.
Intel Core i9-9900K Desktop Processor
- Super easy to install and is super fast.
- This CPU is easy to install, fast, and so far glitch-free.
- Very nice packaging and easy installation.
