Intel Core i7-6800K
Intel Core i5-9400F
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Intel Core i7-6800K vs Intel Core i5-9400F. Specifications, performance, tests

Overall score
star star star star star
Released
Q2/2016
Intel Core i7-6800K
Intel Core i7-6800K
Released
Q1/2019
Overall score
star star star star star
Intel Core i5-9400F
Intel Core i5-9400F

What's the best choice Intel Core i7-6800K or Intel Core i5-9400F? Which processor is faster?

We have prepared a comparison to help you choose the best processor. Compare their specifications and benchmarks.

Intel Core i7-6800K has a maximum frequency of 3.40 GHz. 6 Cores. Power consumption of 140 W. Released in Q2/2016.

Intel Core i5-9400F has a maximum frequency of 2.90 GHz. 6 Cores. Power consumption of 65 W. Released in Q1/2019.

Differences

  • Higher clock speed

    Around 15% better clock speed

    3.40 GHz left arrow 2.90 GHz

Positions in all rankings

Common positions Intel Core i7-6800K CPU in popular benchmarks, for comparison with other models.

  • Cinebench R23 (Single-Core)
    319 place
  • Cinebench R23 (Multi-Core)
    231 place
  • Place in the overall ranking

    (based on several benchmarks)

    634 left arrow score
  • Higher turbo clock speed

    Around 12 % better overclocked clock speed

    4.10 GHz left arrow 3.60 GHz
  • Performance per watt

    About 0.46 times less performance per watt

    65 W left arrow 140 W

Positions in all rankings

Common positions Intel Core i5-9400F CPU in popular benchmarks, for comparison with other models.

  • Cinebench R23 (Single-Core)
    298 place
  • Cinebench R23 (Multi-Core)
    260 place
  • Cinebench R20 (Single-Core)
    281 place
  • Cinebench R20 (Multi-Core)
    253 place
  • Cinebench R15 (Single-Core)
    227 place
  • Cinebench R15 (Multi-Core)
    321 place
  • Geekbench 5, 64bit (Single-Core)
    452 place
  • Geekbench 5, 64bit (Multi-Core)
    1291 place
  • Blender 2.81 (bmw27)
    97 place
  • Geekbench 3, 64bit (Single-Core)
    29 place
  • Geekbench 3, 64bit (Multi-Core)
    163 place
  • Estimated results for PassMark CPU Mark
    462 place

Specifications

Technical data
Intel Core i7-6800K Intel Core i7-6800K
Intel Core i5-9400F Intel Core i5-9400F
CPU family and group

Background information about the processors being compared, series, generation and market segment.

  • Segment
    Desktop / Server left arrow Desktop / Server
  • Family
    Intel Core i7 Extreme Edition left arrow Intel Core i5
  • Generation
    6 left arrow 9
  • CPU group
    Intel Core i 6000 left arrow Intel Core i 9000
  • Predecessor
    -- left arrow Intel Core i5-8400
  • Successor
    -- left arrow Intel Core i5-10400F
CPU Technical specs

Basic parameters such as number of cores, number of threads, base and turbo frequency, and cache size. These parameters indirectly tell about the speed of the processor, the higher they are the better.

  • Frequency
    3.40 GHz left arrow 2.90 GHz
  • CPU Cores
    6 left arrow 6
  • Turbo (1 Core)
    3.60 GHz left arrow 4.10 GHz
  • CPU Threads
    12 left arrow 6
  • Turbo (6 Cores)
    No turbo left arrow 3.90 GHz
  • Hyperthreading
    Yes left arrow No
  • Overclocking
    Yes left arrow No
  • Core architecture
    normal left arrow normal
IGPU

Internal Graphics does not affect the performance of the CPU, performs the work of the graphics card in its absence or on mobile devices.

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

Built-in codecs used to encode and decode content. Significantly speeds up the required operations.

  • 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 specs & PCI

Types, channel quantity of RAM supported by Intel Core i5-9400F and Intel Core i7-6800K. Depending on the motherboards, higher or lower memory frequencies may be supported.

  • Memory type
    DDR4-2133DDR4-2400 left arrow DDR4-2666
  • Max. Memory
    128 GB left arrow 128 GB
  • ECC
    No left arrow No
  • Memory channels
    4 left arrow 2
  • PCIe version
    3.0 left arrow 3.0
  • PCIe lanes
    28 left arrow 16
Encryption
  • AES-NI
    Yes left arrow Yes
Thermal Management

Compare the TDP requirements of TDP Intel Core i7-6800K and Intel Core i5-9400F to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

  • TDP (PL1)
    140 W left arrow 65 W
  • Tjunction max.
    100 °C left arrow 100 °C
Technologies and extensions

Architecture, interfaces, additional instructions supported by Intel Core i7-6800K and Intel Core i7-6800K, virtual machine technologies and process technology.

  • 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 left arrow SSE4.1, SSE4.2, AVX2
  • L3-Cache
    15.00 MB left arrow 9.00 MB
  • Architecture
    Skylake S left arrow Coffee Lake S Refresh
  • Technology
    14 nm left arrow 14 nm
  • Socket
    LGA 2011-3 left arrow LGA 1151-2
  • Release date
    Q2/2016 left arrow Q1/2019

Benchmarks

Performance tests CPUs

Based on the results of several benchmarks, you can more accurately estimate the difference in performance between Intel Core i7-6800K and Intel Core i5-9400F.

Compare the synthetic test values and choose the best processor!

Cinebench R23 (Single-Core)
Maxon's Cinebench R23 SC is a cross-platform test suite for macOs and Windows uses one CPU core, with no hypetrading
949
Intel Core i7-6800K
1020
Intel Core i5-9400F
Cinebench R23 (Multi-Core)
Maxon's Cinebench R23 MC is a cross-platform test suite for macOs and Windows using a multi-core and hyperthreading
6645
Intel Core i7-6800K
5581
Intel Core i5-9400F

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