Intel Core i7-9800X
Intel Core i9-9940X
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Intel Core i7-9800X vs Intel Core i9-9940X

Overall score
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Overall score
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Reasons to consider
Intel Core i7-9800X
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  • Higher clock speed
    3.80 GHz left arrow 3.30 GHz
    Around -15% better clock speed
Reasons to consider
Intel Core i9-9940X
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  • More number of cores
    14 left arrow 8
    2 times more cores
  • Higher turbo clock speed
    4.50 GHz left arrow 4.40 GHz
    Around 2 % better overclocked clock speed
Complete list of technical specifications
Intel Core i7-9800X Intel Core i7-9800X
Intel Core i9-9940X Intel Core i9-9940X
CPU generation and family

Comparison of processors Intel Core i7-9800X vs. Intel Core i9-9940X will begin with the difference in model generations and their basic specifications: the purpose of the model (for server or workstation, computer or laptop), the code name of the CPU model and its generation, the previous model and the family related to a specific processor group.

  • Name
    Intel Core i7-9800X left arrow Intel Core i9-9940X
  • Segment
    Desktop / Server left arrow Desktop / Server
  • Family
    Intel Core i7 left arrow Intel Core i9
  • Generation
    9 left arrow 9
  • CPU group
    Intel Core i 9000X left arrow Intel Core i 9000X
CPU Cores and Base Frequency

Comparing processors Intel Core i7-9800X vs. Intel Core i9-9940X in this info section reveals us the performance difference in terms of base clock frequency, number of cores and number of threads. Note the possibility of overclocking models and support for hyperthreading, which is important for processing large data sets.

  • Frequency
    3.80 GHz left arrow 3.30 GHz
  • CPU Cores
    8 left arrow 14
  • Turbo (1 Core)
    4.40 GHz left arrow 4.50 GHz
  • CPU Threads
    16 left arrow 28
  • Hyperthreading
    Yes left arrow Yes
  • Overclocking
    Yes left arrow Yes
  • Core architecture
    normal left arrow normal
Internal Graphics

Integrated graphics in the CPU is an addition that is not always found in models. So just pay attention to the presence of iGPU, it is a feature that does not affect the overall performance evaluation. If the CPU comparison Intel Core i7-9800X versus Intel Core i9-9940X lacks an integrated graphics card in one of the models being compared, just go ahead and explore the following information.

  • GPU name
    no iGPU left arrow no iGPU
  • GPU (Turbo)
    No turbo left arrow No turbo
Hardware codec support

Consider hardware codec support for CPU Intel Core i7-9800X and CPU Intel Core i9-9940X in a performance comparison. Hardware acceleration helps to convert processed data into sound or video files; in fact, the presence or absence of this support does not affect the power of the model.

  • h265 / HEVC (8 bit)
    No left arrow No
  • h265 / HEVC (10 bit)
    No left arrow No
  • h264
    No left arrow No
  • VP9
    No left arrow No
  • VP8
    No left arrow No
  • AV1
    No left arrow No
  • AVC
    No left arrow No
  • VC-1
    No left arrow No
  • JPEG
    No left arrow No
Memory & PCIe

Comparing the performance of processors Intel Core i7-9800X and Intel Core i9-9940X in terms of supported memory specifications and PCIe can significantly impact the models' overall performance in gaming, rendering, and other professional applications. Make sure to examine these specifications closely; the CPU that supports a more advanced DDR memory standard (currently version 5), the latest PCIe version (version 5 being the newest), and compatibility with higher clock speed RAM will come out on top.

  • Memory type
    DDR4-2666 left arrow DDR4-2666
  • Max. Memory
    128 GB left arrow 128 GB
  • ECC
    No left arrow No
  • Memory channels
    4 left arrow 4
  • PCIe version
    3.0 left arrow 3.0
  • PCIe lanes
    44 left arrow 44

Intel's Advanced Encryption Standard New Instructions (Intel AES-NI) is a standard implemented by Intel for its processors, aimed at providing a higher level of data protection through encryption. This feature might not be available in some AMD models. It is not included in performance ratings or benchmark speed evaluations.

  • AES-NI
    Yes left arrow Yes
Thermal Management

When comparing processors Intel Core i7-9800X and Intel Core i9-9940X, it is important to pay attention to the processor's cooling system. A good cooling system ensures stable processor operation, prevents overheating, and increases its performance. The best processors are typically equipped with more efficient cooling systems, which is one of the factors that influence their high performance.

  • TDP (PL1)
    165 W left arrow 165 W
  • Tjunction max.
    95 °C left arrow 92 °C
Technical details

When comparing the technical specifications of processors Intel Core i7-9800X and Intel Core i9-9940X, it's important to consider several key factors that can impact their performance and efficiency. Firstly, take note of the release date, as newer models are generally more advanced and have improved performance. Secondly, consider the size of the L2 and L3 cache, as this directly affects the processor's speed of data processing and retrieval. Additionally, it's important to check the manufacturing process technology, as the smaller the nanometer value, the more advanced the technology and the better the performance. All these factors should be taken into account when making a decision on which processor to choose.

  • Instruction set (ISA)
    x86-64 (64 bit) left arrow x86-64 (64 bit)
  • Virtualization
    VT-x, VT-x EPT, VT-d left arrow VT-x, VT-x EPT, VT-d
  • ISA extensions
    SSE4.1, SSE4.2, AVX2, AVX-512 left arrow SSE4.1, SSE4.2, AVX2, AVX-512
  • L3-Cache
    16.50 MB left arrow 19.00 MB
  • Architecture
    Skylake X Refresh left arrow Skylake X Refresh
  • Technology
    14 nm left arrow 14 nm
  • Socket
    LGA 2066 left arrow LGA 2066
  • Release date
    Q4/2018 left arrow Q4/2018
Devices using this processor

At the end of the processor model comparison Intel Core i7-9800X and Intel Core i9-9940X you can see in which workstations, gaming computers or laptops the models were installed. If you find an inaccuracy, please email us and we will complete this page.

  • Used in
    Unknown left arrow Unknown
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