Intel Core i9-10900X vs Intel Core i9-9900KS

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CPU comparison with benchmarks


Intel Core i9-10900X CPU1 vs CPU2 Intel Core i9-9900KS
Intel Core i9-10900X Intel Core i9-9900KS

CPU comparison

Intel Core i9-10900X or Intel Core i9-9900KS - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.

The Intel Core i9-10900X has 10 cores with 20 threads and clocks with a maximum frequency of 4.70 GHz. Up to 256 GB of memory is supported in 4 memory channels. The Intel Core i9-10900X was released in Q4/2019.

The Intel Core i9-9900KS has 8 cores with 16 threads and clocks with a maximum frequency of 5.00 GHz. The CPU supports up to 128 GB of memory in 2 memory channels. The Intel Core i9-9900KS was released in Q4/2019.
Intel Core i9 (78) Family Intel Core i9 (78)
Intel Core i 10000X (4) CPU group Intel Core i 9000 (34)
10 Generation 9
Cascade Lake Architecture Coffee Lake S Refresh
Desktop / Server Segment Desktop / Server
Intel Core i9-9900X Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Core i9-10900X has 10 CPU cores and can calculate 20 threads in parallel. The clock frequency of the Intel Core i9-10900X is 3.70 GHz (4.70 GHz) while the Intel Core i9-9900KS has 8 CPU cores and 16 threads can calculate simultaneously. The clock frequency of the Intel Core i9-9900KS is at 4.00 GHz (5.00 GHz).

Intel Core i9-10900X Characteristic Intel Core i9-9900KS
10 Cores 8
20 Threads 16
normal Core architecture normal
Yes Hyperthreading Yes
Yes Overclocking ? Yes
3.70 GHz Frequency 4.00 GHz
4.70 GHz Turbo Frequency (1 Core) 5.00 GHz
4.50 GHz Turbo Frequency (All Cores) 4.80 GHz

Artificial Intelligence and Machine Learning

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.

Intel Core i9-10900X Characteristic Intel Core i9-9900KS
-- AI hardware --
-- AI specifications --

Internal Graphics

The Intel Core i9-10900X or Intel Core i9-9900KS has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die.

no iGPU GPU Intel UHD Graphics 630
GPU frequency 0.35 GHz
-- GPU (Turbo) 1.20 GHz
-- GPU Generation 9.5
Technology 14 nm
Max. displays 3
-- Compute units 24
-- Shader 192
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory 64 GB
-- DirectX Version 12

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.

no iGPU GPU Intel UHD Graphics 630
No Codec h265 / HEVC (8 bit) Decode / Encode
No Codec h265 / HEVC (10 bit) Decode / Encode
No Codec h264 Decode / Encode
No Codec VP9 Decode / Encode
No Codec VP8 Decode / Encode
No Codec AV1 No
No Codec AVC Decode / Encode
No Codec VC-1 Decode
No Codec JPEG Decode / Encode

Memory & PCIe

The Intel Core i9-10900X can use up to 256 GB of memory in 4 memory channels. The maximum memory bandwidth is 93.8 GB/s. The Intel Core i9-9900KS supports up to 128 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 42.7 GB/s.

Intel Core i9-10900X Characteristic Intel Core i9-9900KS
DDR4-2933 Memory DDR4-2666
256 GB Max. Memory 128 GB
4 (Quad Channel) Memory channels 2 (Dual Channel)
93.8 GB/s Max. Bandwidth 42.7 GB/s
No ECC No
-- L2 Cache --
19.25 MB L3 Cache 16.00 MB
3.0 PCIe version 3.0
48 PCIe lanes 16
47.3 GB/s PCIe Bandwidth 15.8 GB/s

Thermal Management

The thermal design power (TDP for short) of the Intel Core i9-10900X is 165 W, while the Intel Core i9-9900KS has a TDP of 127 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

Intel Core i9-10900X Characteristic Intel Core i9-9900KS
165 W TDP (PL1 / PBP) 127 W
-- TDP (PL2) 159 W @ 28 s
-- TDP up --
-- TDP down --
94 °C Tjunction max. 100 °C

Technical details

The Intel Core i9-10900X is manufactured in 14 nm and has 19.25 MB cache. The Intel Core i9-9900KS is manufactured in 14 nm and has a 16.00 MB cache.

Intel Core i9-10900X Characteristic Intel Core i9-9900KS
14 nm Technology 14 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX2, AVX-512 ISA extensions SSE4.1, SSE4.2, AVX2
LGA 2066 Socket LGA 1151-2
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
Yes AES-NI Yes
Windows 10, Windows 11, Linux Operating systems Windows 10, Windows 11, Linux
Q4/2019 Release date Q4/2019
590 $ Release price 524 $
show more data show more data


Rate these processors

Here you can rate the Intel Core i9-10900X to help other visitors make their purchasing decisions. The average rating is 5.0 stars (1 ratings). Rate now:
Here you can rate the Intel Core i9-9900KS to help other visitors make their purchasing decisions. The average rating is 5.0 stars (2 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 4 CPU benchmarks
⌀ Multi core performance in 7 CPU benchmarks

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i9-10900X Intel Core i9-10900X
10C 20T @ 4.70 GHz
1143 (86%)
Intel Core i9-9900KS Intel Core i9-9900KS
8C 16T @ 5.00 GHz
1333 (100%)

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i9-10900X Intel Core i9-10900X
10C 20T @ 4.50 GHz
14301 (100%)
Intel Core i9-9900KS Intel Core i9-9900KS
8C 16T @ 4.80 GHz
13305 (93%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i9-10900X Intel Core i9-10900X
10C 20T @ 4.70 GHz
1171 (83%)
Intel Core i9-9900KS Intel Core i9-9900KS
8C 16T @ 5.00 GHz
1419 (100%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i9-10900X Intel Core i9-10900X
10C 20T @ 4.50 GHz
10651 (100%)
Intel Core i9-9900KS Intel Core i9-9900KS
8C 16T @ 4.80 GHz
9471 (89%)

Geekbench 6 (Single-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
Intel Core i9-10900X Intel Core i9-10900X
10C 20T @ 4.70 GHz
1445 (88%)
Intel Core i9-9900KS Intel Core i9-9900KS
8C 16T @ 5.00 GHz
1650 (100%)

Geekbench 6 (Multi-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
Intel Core i9-10900X Intel Core i9-10900X
10C 20T @ 4.50 GHz
8727 (100%)
Intel Core i9-9900KS Intel Core i9-9900KS
8C 16T @ 4.80 GHz
8514 (98%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
Intel Core i9-10900X Intel Core i9-10900X
10C 20T @ 4.50 GHz
22510 (100%)
Intel Core i9-9900KS Intel Core i9-9900KS
8C 16T @ 4.80 GHz
19602 (87%)

Blender 2.81 (bmw27)

Blender is a free 3D graphics software for rendering (creating) 3D bodies, which can also be textured and animated in the software. The Blender benchmark creates predefined scenes and measures the time (s) required for the entire scene. The shorter the time required, the better. We selected bmw27 as the benchmark scene.
Intel Core i9-10900X Intel Core i9-10900X
10C 20T @ 4.50 GHz
135.4 (91%)
Intel Core i9-9900KS Intel Core i9-9900KS
8C 16T @ 4.80 GHz
148 (100%)

CPU-Z Benchmark 17 (Multi-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Intel Core i9-10900X Intel Core i9-10900X
10C 20T @ 3.70 GHz
5948 (99%)
Intel Core i9-9900KS Intel Core i9-9900KS
8C 16T @ 4.00 GHz
6012 (100%)

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i9-10900X Intel Core i9-10900X
10C 20T @ 4.70 GHz
198 (89%)
Intel Core i9-9900KS Intel Core i9-9900KS
8C 16T @ 5.00 GHz
222 (100%)

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i9-10900X Intel Core i9-10900X
10C 20T @ 4.50 GHz
2358 (100%)
Intel Core i9-9900KS Intel Core i9-9900KS
8C 16T @ 4.80 GHz
2201 (93%)

Cinebench 2024 (Single-Core)

The Cinebench 2024 benchmark is based on the Redshift rendering engine, which is also used in Maxon's 3D program Cinema 4D. The benchmark runs are each 10 minutes long to test whether the processor is limited by its heat generation.
Intel Core i9-10900X Intel Core i9-10900X
10C 20T @ 4.70 GHz
0 (0%)
Intel Core i9-9900KS Intel Core i9-9900KS
8C 16T @ 5.00 GHz
77 (100%)

Cinebench 2024 (Multi-Core)

The Multi-Core test of the Cinebench 2024 benchmark uses all cpu cores to render using the Redshift rendering engine, which is also used in Maxons Cinema 4D. The benchmark run is 10 minutes long to test whether the processor is limited by its heat generation.
Intel Core i9-10900X Intel Core i9-10900X
10C 20T @ 4.70 GHz
0 (0%)
Intel Core i9-9900KS Intel Core i9-9900KS
8C 16T @ 5.00 GHz
687 (100%)

Cinebench R20 (Single-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i9-10900X Intel Core i9-10900X
10C 20T @ 4.70 GHz
0 (0%)
Intel Core i9-9900KS Intel Core i9-9900KS
8C 16T @ 5.00 GHz
518 (100%)

Cinebench R20 (Multi-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i9-10900X Intel Core i9-10900X
10C 20T @ 4.50 GHz
0 (0%)
Intel Core i9-9900KS Intel Core i9-9900KS
8C 16T @ 4.80 GHz
5226 (100%)

iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
Intel Core i9-10900X Intel Core i9-10900X
@ 0.00 GHz
0 (0%)
Intel Core i9-9900KS Intel Core i9-9900KS
Intel UHD Graphics 630 @ 1.20 GHz
461 (100%)

Devices using this processor

Intel Core i9-10900X Intel Core i9-9900KS
Unknown Unknown

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