Intel Core i9-9940X vs Intel Core i9-9900X

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CPU comparison with benchmarks

-VS-

CPU lineage

Intel Core i9-9940X or Intel Core i9-9940X – 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 i9-9940X features 14 processor cores and has the capability to manage 28 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 i9-9940X, you'll need a motherboard with a LGA 2066 socket.
The Intel Core i9-9900X features 10 processor cores and has the capability to manage 20 threads concurrently.
To use the Intel Core i9-9900X, you'll need a motherboard with a LGA 2066 socket.
Desktop / Server Segment Desktop / Server
Intel Core i9-9940X Name Intel Core i9-9900X
Intel Core i9 Family Intel Core i9
9 Generation 9
Intel Core i 9000X Group Intel Core i 9000X
 
 

CPU Cores and Base Frequency

The Intel Core i9-9940X has 14 CPU cores and can calculate 28 threads in parallel.
The clock frequency of the Intel Core i9-9940X is 3.3 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 i9-9900X has 10 CPU cores and can calculate 20 threads in parallel.
The clock frequency of the Intel Core i9-9900X is 3.5 GHz
4.5 GHz Turbo Frequency (1 core) 4.5 GHz
Yes Overclocking Yes
normal Core architecture normal
3.3 GHz Frequency 3.5 GHz
28 Threads 20
Yes Hyperthreading Yes
14 CPU Cores 10
14x Cores 10x
 
 

Internal Graphics

The Intel Core i9-9940X does not have integrated graphics.
The Intel Core i9-9900X does not have integrated graphics.
-- GPU frequency --
-- Release date --
-- Direct X --
GPU name
-- Technology --
-- Max. displays --
-- Shaders --
0 bytes Max. GPU Memory 0 bytes
-- Execution units --
-- Generation --
-- GPU (Turbo) --
 
 

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 --
-- VC-1 --
-- VP9 --
-- h265 / HEVC (10 bit) --
-- h264 --
-- VP8 --
-- h265 / HEVC (8 bit) --
-- JPEG --
-- AV1 --
 
 

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.
4 Memory channels 4
128.0 GB Max. Memory 128.0 GB
pci PCIe pci
Yes AES-NI Yes
No ECC No
42.7 GB/s Bandwidth 42.7 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.
92 °C Tjunction max 92 °C
165 W TDP (PL1 / PBP) 165 W
 
 

Technical details

The Intel Core i9-9940X 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 i9-9900X is manufactured using a 14 nm process.
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, AVX-512
Monolithic Chip design Monolithic
Skylake X Refresh Architecture Skylake X Refresh
14 nm Technology 14 nm
LGA 2066 Socket LGA 2066
Windows 10, Linux, Windows 11 Operating systems Windows 10, Linux, Windows 11
1387 $ Release price 989 $
Technical data sheet Documents Technical data sheet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
19.0 MB L3-Cache 19.0 MB
 
 

Benchmarks

Estimated results for PassMark CPU Mark

Intel Core i9-9940X
14C 28T @ 3.3 GHz
28390
28390
Intel Core i9-9900X
10C 20T @ 3.5 GHz
21882
21882

Geekbench 5, 64bit (Multi-Core)

Intel Core i9-9940X
14C 28T @ 3.3 GHz
13946
13946
Intel Core i9-9900X
10C 20T @ 3.5 GHz
10490
10490

Geekbench 6 (Multi-Core)

Intel Core i9-9940X
14C 28T @ 3.3 GHz
10820
10820
Intel Core i9-9900X
10C 20T @ 3.5 GHz
9475
9475

Cinebench R20 (Multi-Core)

Intel Core i9-9940X
14C 28T @ 3.3 GHz
5912
5912
Intel Core i9-9900X
10C 20T @ 3.5 GHz
4855
4855

Cinebench R15 (Multi-Core)

Intel Core i9-9940X
14C 28T @ 3.3 GHz
2587
2587
Intel Core i9-9900X
10C 20T @ 3.5 GHz
2114
2114

Geekbench 6 (Single-Core)

Intel Core i9-9940X
14C 28T @ 3.3 GHz
1459
1459
Intel Core i9-9900X
10C 20T @ 3.5 GHz
1459
1459

Geekbench 5, 64bit (Single-Core)

Intel Core i9-9940X
14C 28T @ 3.3 GHz
1174
1174
Intel Core i9-9900X
10C 20T @ 3.5 GHz
1174
1174

Cinebench R20 (Single-Core)

Intel Core i9-9940X
14C 28T @ 3.3 GHz
457
457
Intel Core i9-9900X
10C 20T @ 3.5 GHz
455
455