Intel Core i9-9900X vs Intel Core i9-9900K

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CPU comparison with benchmarks

-VS-

CPU lineage

Intel Core i9-9900X or Intel Core i9-9900X – which processor offers superior performance? In this comparison, we examine disparities and assess which of these two CPUs outperforms the other. We delve into technical specifications and benchmark outcomes.
The Intel Core i9-9900X features 10 processor cores and has the capability to manage 20 threads concurrently.
It was released in Q4/2018 and belongs to the 9 generation of the Intel Core i9 series.
To use the Intel Core i9-9900X, you'll need a motherboard with a LGA 2066 socket.
The Intel Core i9-9900K features 8 processor cores and has the capability to manage 16 threads concurrently.
To use the Intel Core i9-9900K, you'll need a motherboard with a LGA 1151-2 socket.
Desktop / Server Segment Desktop / Server
Intel Core i9-9900X Name Intel Core i9-9900K
Intel Core i9 Family Intel Core i9
9 Generation 9
Intel Core i 9000X Group Intel Core i 9000
 
 

CPU Cores and Base Frequency

The Intel Core i9-9900X has 10 CPU cores and can calculate 20 threads in parallel.
The clock frequency of the Intel Core i9-9900X is 3.5 GHz
and turbo frequency for one core is 4.5 GHz.
The number of CPU cores greatly affects the speed of the processor and is an important performance indicator.
The Intel Core i9-9900K has 8 CPU cores and can calculate 16 threads in parallel.
The clock frequency of the Intel Core i9-9900K is 3.6 GHz
and turbo frequency for one core is 5.0 GHz.
4.5 GHz Turbo Frequency (1 core) 5.0 GHz
Yes Overclocking Yes
normal Core architecture normal
3.5 GHz Frequency 3.6 GHz
20 Threads 16
None None 4.7 GHz
Yes Hyperthreading Yes
10 CPU Cores 8
10x Cores 8x
 
 

Internal Graphics

The Intel Core i9-9900X does not have integrated graphics.
The Intel Core i9-9900K has integrated graphics, called iGPU for short.
Specifically, the Intel Core i9-9900K uses the Intel UHD Graphics 630, which has 192 texture shaders
and 24 execution units.
The iGPU uses the system's main memory as graphics memory and sits on the processor's die.
-- GPU frequency 0.35 GHz
-- Release date Q4/2017
-- Direct X 12
GPU name Intel UHD Graphics 630
-- Technology 14 nm
-- Max. displays --
-- Shaders 192
0 bytes Max. GPU Memory 64.0 GB
-- Execution units 24
-- Generation 9.5
-- GPU (Turbo) 1.2 GHz
 
 

Artificial Intelligence and Machine Learning

-- AI specifications --
-- AI hardware --
 
 

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.
-- AVC Decode / Encode
-- VC-1 Decode
-- VP9 Decode / Encode
-- h265 / HEVC (10 bit) Decode / Encode
-- h264 Decode / Encode
-- VP8 Decode / Encode
-- h265 / HEVC (8 bit) Decode / Encode
-- JPEG Decode / Encode
-- AV1 No
 
 

Memory & PCIe

The processor supports a maximum memory capacity of 128.0 GB distributed across 4 memory channels. It offers a peak memory bandwidth of 42.7 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
The processor supports a maximum memory capacity of 128.0 GB distributed across 2 memory channels. It offers a peak memory bandwidth of 39.5 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
4 Memory channels 2
128.0 GB Max. Memory 128.0 GB
pci PCIe pci
Yes AES-NI Yes
No ECC No
42.7 GB/s Bandwidth 39.5 GB/s
DDR4-2666 Memory type DDR4-2666
 
 

Thermal Management

The processor has a thermal design power (TDP) of 165 W watts.
TDP indicates the cooling solution needed to effectively manage the processor's heat. It generally provides an approximate indication of the actual power consumption of the CPU itself.
The processor has a thermal design power (TDP) of 95 W watts.
92 °C Tjunction max 100 °C
165 W TDP (PL1 / PBP) 95 W
 
 

Technical details

The Intel Core i9-9900X is manufactured using a 14 nm process.
A smaller manufacturing process indicates a more contemporary and energy-efficient CPU.
In total, this processor boasts a generous 19.0 MB cache.
A substantial cache can significantly enhance the processor's performance, particularly in scenarios like gaming.
The Intel Core i9-9900K is manufactured using a 14 nm process.
In total, this processor boasts a generous 16.0 MB cache.
Q4/2018 Release date Q4/2018
-- Part Number --
0 bytes L2-Cache 0 bytes
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
SSE4.1, SSE4.2, AVX2, AVX-512 ISA extensions SSE4.1, SSE4.2, AVX2
Monolithic Chip design Monolithic
Skylake X Refresh Architecture Coffee Lake S Refresh
14 nm Technology 14 nm
LGA 2066 Socket LGA 1151-2
Windows 10, Linux, Windows 11 Operating systems Windows 10, Linux, Windows 11
989 $ Release price 650 $
Technical data sheet Documents Technical data sheet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
19.0 MB L3-Cache 16.0 MB
 
 

Benchmarks

Estimated results for PassMark CPU Mark

Intel Core i9-9900X
10C 20T @ 3.5 GHz
21882
21882
Intel Core i9-9900K
8C 16T @ 3.6 GHz
18702
18702

Geekbench 5, 64bit (Multi-Core)

Intel Core i9-9900X
10C 20T @ 3.5 GHz
10490
10490
Intel Core i9-9900K
8C 16T @ 3.6 GHz
8779
8779

Geekbench 6 (Multi-Core)

Intel Core i9-9900X
10C 20T @ 3.5 GHz
9475
9475
Intel Core i9-9900K
8C 16T @ 3.6 GHz
8182
8182

CPU-Z Benchmark 17 (Multi-Core)

Intel Core i9-9900X
10C 20T @ 3.5 GHz
5640
5640
Intel Core i9-9900K
8C 16T @ 3.6 GHz
5502
5502

Cinebench R20 (Multi-Core)

Intel Core i9-9900K
8C 16T @ 3.6 GHz
4995
4995
Intel Core i9-9900X
10C 20T @ 3.5 GHz
4855
4855

Cinebench R15 (Multi-Core)

Intel Core i9-9900K
8C 16T @ 3.6 GHz
2245
2245
Intel Core i9-9900X
10C 20T @ 3.5 GHz
2114
2114

Geekbench 6 (Single-Core)

Intel Core i9-9900K
8C 16T @ 3.6 GHz
1650
1650
Intel Core i9-9900X
10C 20T @ 3.5 GHz
1459
1459

Geekbench 5, 64bit (Single-Core)

Intel Core i9-9900K
8C 16T @ 3.6 GHz
1342
1342
Intel Core i9-9900X
10C 20T @ 3.5 GHz
1174
1174

Cinebench R20 (Single-Core)

Intel Core i9-9900K
8C 16T @ 3.6 GHz
518
518
Intel Core i9-9900X
10C 20T @ 3.5 GHz
455
455

Blender 2.81 (bmw27)

Intel Core i9-9900X
10C 20T @ 3.5 GHz
169.7
169.7
Intel Core i9-9900K
8C 16T @ 3.6 GHz
163.8
163.8