Intel Core i5 8600K Review | 78 Data compared

double-arrow
  • Avg. price in UK: ~£160
  • Avg. price in US: ~$160
  • PassMark benchmark result: 10137
  • N. of physical cores: 6
  • CPU boost clock speed: 4.3 GHz

Intel Core i5 8600K review. Compare 78 technical specifications and user reviews to see how it ranks among processors and if it is worth buying.

4.9

Overall score

What it is: An overall evaluation of the processor's quality, based on technical analyses and user reviews.

When it matters: When you need a quick reference to identify the best processors on the market.

Score components:

90.0%

4.4

Technical Score

10.0%

9.4

User score

Poor
4.4

Technical Score

What it is: An assessment of the processor's technical performance, covering key areas such as processing performance, core configuration, efficiency, platform support, integrated features, and thermal behavior.

When it matters: When you want to compare processors based on technical performance and available features.

Score components:

60.0%

3.8

Performance

18.0%

4.9

Cache & Architecture

10.0%

5.9

Memory & PCIe

7.0%

3.5

Power & Thermal

4.0%

8.0

Platform

1.0%

6.8

Integrated Graphics

Poor
9.4

User score

What it is: A rating that combines user reviews and the total number of reviews received by the processor.

When it matters: When you want to know how a processor performs in real workloads and how reliable it is for gaming, productivity, and efficiency according to user feedback.

Score components:

70.0%

9.2

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.6
(1636)
amazon
3.1
(3)
amazon
4.0
(1)

(Reviews last updated: May 2026)

Exceptional
  • 4.1
    Gaming

    Score components:

    30.0%

    4.3

    PassMark single-core benchmark score

    25.0%

    4.5

    Geekbench 6 single-core benchmark score

    20.0%

    5.5

    CPU boost clock speed

    17.0%

    2.3

    L3 cache

    8.0%

    2.6

    N. of physical cores

  • 2.7
    Video editing

    Score components:

    45.0%

    3.1

    Geekbench 6 multi-core benchmark score

    20.0%

    2.6

    N. of physical cores

    20.0%

    2.2

    CPU threads

    15.0%

    2.3

    L3 cache

  • intel-core-i5-8600k
  • intel-core-i5-8600k
  • intel-core-i5-8600k
  • intel-core-i5-8600k
  • intel-core-i5-8600k
intel-core-i5-8600k
intel-core-i5-8600k
intel-core-i5-8600k
intel-core-i5-8600k
intel-core-i5-8600k

Best prices in UK

Best rankings

?

Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The Intel Core i5-8600K is an 8th-generation Coffee Lake processor featuring 6 physical cores and 6 threads with a 95W TDP. It operates at a base clock speed of 3.6 GHz and a maximum turbo boost frequency of 4.3 GHz, supported by 9 MB of L3 Smart Cache and an integrated Intel UHD Graphics 630 GPU. Main pros include its unlocked multiplier for high overclocking potential (often reaching 5.0 GHz or higher), excellent single-core gaming performance that rivalled previous-generation i7 models, and a significant 50% core count increase over its predecessor. However, main cons include its lack of Hyper-Threading, the requirement for a newer Z370/Z390 motherboard for overclocking, and the fact that it does not include a bundled thermal cooling solution.

Technical Specifications of processor Intel Core i5 8600K

Technical Score

What it is: An assessment of the processor's technical performance, covering key areas such as processing performance, core configuration, efficiency, platform support, integrated features, and thermal behavior.

When it matters: When you want to compare processors based on technical performance and available features.

Score components:

60.0%

3.8

Performance

18.0%

4.9

Cache & Architecture

10.0%

5.9

Memory & PCIe

7.0%

3.5

Power & Thermal

4.0%

8.0

Platform

1.0%

6.8

Integrated Graphics

4.4
Intel Core i5 8600K has a technical score of 4.38 points, which is lower than that of 69% of products in this category.
User score

What it is: A rating that combines user reviews and the total number of reviews received by the processor.

When it matters: When you want to know how a processor performs in real workloads and how reliable it is for gaming, productivity, and efficiency according to user feedback.

Score components:

70.0%

9.2

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.6
(1636)
amazon
3.1
(3)
amazon
4.0
(1)

(Reviews last updated: May 2026)

9.4
Intel Core i5 8600K has a user score of 9.44 points, which is higher than that of 93.3% of products in this category.
Popularity
What it is: An indicator based on the number of reviews received by the processor.
When it matters: When you prefer to choose a processor reviewed and selected by many other buyers.
10
Intel Core i5 8600K has a popularity of 10 points, which is higher than 88.3% of products in this category.
Ratio quality/price

What it is: An indicator that combines the processor's overall rating with its cost.

When it matters: When you are looking for a processor with a good balance between performance, efficiency, and price.

Score components:

60.0%

4.9

Overall score

40.0%

9.7

Price

6.3
Intel Core i5 8600K has a quality-to-price ratio of 6.3 points, which is lower than 51% of products in this category.
Brand name
What it is: The manufacturer or brand of the product.
When it matters: When you prefer a specific ecosystem, support network, or design philosophy.

Importance: MEDIUM

Intel
Processor type
What it is: The kind of system the processor is built for, such as desktop PCs, laptops, workstations, or servers.
When it matters: When you want a processor meant for the kind of machine you are actually building or buying, rather than a chip aimed at a different class of system.

Importance: HIGH

desktop
Intel Core i5 8600K belongs to the desktop processor class, which is more advanced than that of 56% of processors and equal to that of 37.9% of processors.
CPU socket
What it is: The physical socket the processor fits into on the motherboard.
When it matters: When you need to make sure the CPU can actually be installed on a specific motherboard.

Importance: HIGH

LGA1151
Intel Core i5 8600K uses the LGA1151 CPU socket, which is newer than that of 60.1% of processors and equal to that of 9.7% of processors.
Chipset
What it is: The motherboard chipset families officially meant to work with the processor.
When it matters: When you are checking whether a CPU will work with the motherboard features and platform you plan to use.

Importance: HIGH

Z390, Z370, Q370, H370, B365, B360, H310
Intel Core i5 8600K supports Z390, Z370, Q370, H370, B365, B360, H310 chipsets, which is broader compatibility than 57.1% of processors and equal to that of 4.4% of processors.
CPU architecture
What it is: The processor family or design generation behind the chip, such as Zen 4 or Raptor Lake.
When it matters: When you are comparing CPUs across generations and want a clearer sense of their design age, feature level, and expected performance class.

Importance: HIGH

x86-64
Intel Core i5 8600K uses the x86-64 architecture, which is more advanced than that of 1.7% of processors and equal to that of 98.3% of processors.
Show more
N. of physical cores
What it is: The number of physical CPU cores on the processor.
When it matters: When you run workloads that benefit from more real cores.

Importance: HIGH

Good value: 8+

6
Intel Core i5 8600K has 6 CPU cores, which is more than 49.9% of processors and equal to 13.4% of processors.
CPU threads
What it is: The total number of processing threads the CPU can handle at once.
When it matters: When you run heavily threaded workloads or multitask a lot.

Importance: HIGH

Good value: 16+

6
Intel Core i5 8600K offers 6 CPU threads, which is fewer than 64.8% of processors and equal to 2.2% of processors.
Threads per core
What it is: The number of threads each physical core can handle at once.
When it matters: When you want to understand how much thread-level parallelism each core can provide in multitasking or heavily threaded work.

Importance: MEDIUM

Good value: 2

1
Intel Core i5 8600K offers 1 threads per core, which is fewer than 69.7% of processors and equal to 30.3% of processors.
CPU boost clock speed
What it is: The highest clock speed the processor can reach under boost conditions.
When it matters: When you care about peak speed in short bursts.

Importance: HIGH

Good value: >4.7 GHz

4.3 GHz
Intel Core i5 8600K reaches a boost clock of 4.3 GHz which is higher than that of 48.2% of processors and equal to that of 2.9% of processors.
CPU base clock speed
What it is: The processor's normal all-core starting frequency before boost behavior raises clocks temporarily.
When it matters: When you care about steadier performance in longer workloads rather than short burst speed alone.

Importance: MEDIUM

6 x 3.6 GHz
Intel Core i5 8600K has a base clock of 6x3.6 GHz which is equal to that of 100% of processors.
Show more
Semiconductor size
What it is: The manufacturing process node used to produce the processor, usually expressed in nanometers.
When it matters: When efficiency, heat, and the relative modernity of the chip-making process matter to your comparison.

Importance: HIGH

Good value: <10 nm

14 nm
Intel Core i5 8600K uses a 14 nm process node, which is older than that of 50.8% of processors and equal to that of 33.7% of processors.
Foundry
What it is: The semiconductor manufacturer that physically fabricates the processor chip.
When it matters: When process source, manufacturing generation, or foundry differences matter to your comparison more than day-to-day performance alone.

Importance: MEDIUM

Intel 14 nm
Intel Core i5 8600K is built on the Intel 14 nm foundry process, which is less advanced than that of 55.2% of processors and equal to that of 29.3% of processors.
L3 cache
What it is: The total amount of L3 cache available on the processor.
When it matters: When you want better performance in cache-sensitive workloads and games.

Importance: MEDIUM

Good value: >=16 MB

9 MB
Intel Core i5 8600K has an L3 cache of 9 MB which is larger than that of 51.7% of processors and equal to that of 1.9% of processors.
L2 cache
What it is: The total amount of L2 cache available across the processor.
When it matters: When you want to compare CPU design efficiency and how much fast intermediate cache the cores have available.

Importance: MEDIUM

Good value: >=6 MB

1.5 MB
Intel Core i5 8600K has an L2 cache of 1.5 MB which is smaller than that of 62.5% of processors and equal to that of 4.6% of processors.
L1 cache
What it is: The total amount of L1 cache built into the processor, which sits closest to the cores.
When it matters: When you are comparing low-level CPU design details rather than the broader performance picture buyers usually notice first.

Importance: MEDIUM

Good value: >=512 KB

384 KB
Intel Core i5 8600K has an L1 cache of 384 KB which is larger than that of 45% of processors and equal to that of 15.8% of processors.
Show more
DDR memory version
What it is: The RAM generation the processor is designed to support, such as DDR4 or DDR5.
When it matters: When you need the CPU to match the kind of memory platform you want to buy or reuse.

Importance: MEDIUM

Good value: DDR5

DDR4
Intel Core i5 8600K supports DDR DDR4, which is newer than that of 26.3% of processors and equal to that of 31.7% of processors.
Maximum memory speed
What it is: The highest official memory speed supported by the processor.
When it matters: When you choose RAM and want to know the supported speed ceiling.

Importance: HIGH

Good value: >=4800 MHz

2,666 MHz
Intel Core i5 8600K supports memory speeds up to 2666 MHz, which is lower than that of 55% of processors and equal to 8.1% of processors.
Max memory speed (JEDEC)
What it is: The highest official RAM speed the processor supports under standard JEDEC settings, before any memory overclocking profiles are applied.
When it matters: When officially supported stock RAM speed matters more than XMP, EXPO, or manual memory tuning.

Importance: MEDIUM

Good value: >=5600 MHz

DDR4-2666 MHz
Intel Core i5 8600K supports JEDEC memory speeds up to DDR4-2666 MHz, which is lower than that of 55.3% of processors and equal to 7.4% of processors.
Max memory speed (XMP / EXPO)
What it is: The highest memory speed supported through XMP or EXPO profiles.
When it matters: When you want faster RAM through memory profiles.

Importance: MEDIUM

Good value: >=5200 MHz

?
Maximum memory capacity
What it is: The largest total amount of memory officially supported by the processor.
When it matters: When you plan a system with very large RAM capacity.

Importance: HIGH

Good value: >=128 GB

128 GB
Intel Core i5 8600K supports up to 128 GB of memory, which is more than 61.9% of processors and equal to 21.4% of processors.
Show more
Integrated graphics
What it is: Includes built-in graphics, so the system can output video without a separate graphics card.
When it matters: When you want the PC to work without a dedicated GPU, or you are building an office, media, compact, or troubleshooting-friendly system.

Importance: HIGH

yes
Intel Core i5 8600K includes integrated graphics. 87.6% of processors include integrated graphics.
Integrated GPU model
What it is: The model name of the integrated graphics processor, if present.
When it matters: When you plan to use the CPU's built-in graphics.

Importance: MEDIUM

Intel UHD Graphics 630
Intel Core i5 8600K uses the Intel UHD Graphics 630 integrated GPU, which is more advanced than that in 44.3% of processors and equal to that in 8.3% of processors.
Integrated GPU execution units
What it is: The number of execution units available in the integrated graphics part of the processor.
When it matters: When you plan to rely on built-in graphics and want a better sense of its light gaming, display, or media capability.

Importance: MEDIUM

Good value: >=24

24
Intel Core i5 8600K has 24 GPU execution units, which is more than 49.2% of processors and equal to 21.6% of processors.
Integrated GPU base frequency
What it is: The base operating frequency of the integrated GPU.
When it matters: When integrated graphics performance matters to you.

Importance: MEDIUM

Good value: >=350 MHz

350 MHz
Intel Core i5 8600K has an integrated GPU clock of 350 MHz which is higher than that of 43.5% of processors and equal to that of 29.6% of processors.
Integrated media encoders/decoders
What it is: The hardware media formats the processor can encode or decode directly.
When it matters: When you stream, edit video, or rely on hardware media acceleration.

Importance: LOW

H.265 (HW decode), VP9 (HW decode), JPEG (HW decode)
Intel Core i5 8600K supports H.265 (HW decode), VP9 (HW decode), JPEG (HW decode) media codecs, which is broader support than 53.7% of processors and equal to 0.2% of processors.
Show more
TDP (Thermal design power)
What it is: The rated thermal design power, which gives a general idea of cooling and power needs.
When it matters: When you choose a cooler or build in a tighter case.

Importance: HIGH

Good value: <30 W

95 W
Intel Core i5 8600K has a TDP of 95 W which is higher than that of 88.7% of processors and equal to that of 1.8% of processors.
Base power (PL1)
What it is: The sustained power target used for longer CPU loads.
When it matters: When you choose cooling and power delivery for sustained workloads.

Importance: MEDIUM

Good value: <30 W

95 W
Intel Core i5 8600K has a base power of 95 W which is higher than that of 88.9% of processors and equal to that of 1.8% of processors.
Boost power (PL2)
What it is: The short-term boost power limit the processor may draw under heavier turbo loads.
When it matters: When you size cooling and power delivery for peak turbo behavior.

Importance: MEDIUM

Good value: <50 W

119 W
Intel Core i5 8600K has a boost power of 119 W which is higher than that of 78.7% of processors and equal to that of 0.4% of processors.
Tau (power duration limit)
What it is: The time limit the CPU can stay at higher boost power before dropping toward sustained power.
When it matters: When you want to understand turbo behavior under longer loads.

Importance: MEDIUM

Good value: <=28 s

8 seconds
Intel Core i5 8600K has a turbo duration of 8 seconds which is longer than that of 89.1% of processors and equal to that of 7.1% of processors.
Configurable TDP
What it is: Allows the processor to run in alternate power modes instead of being fixed to one default TDP target.
When it matters: When you want more control over heat, noise, and power draw in compact systems, quieter builds, or thermally limited machines.

Importance: LOW

no
Intel Core i5 8600K does not support configurable TDP. 52.9% of processors support configurable TDP.
Show more

Intel Core i5 8600K vs the average processor

  • Unlocked for overclocking
    Intel Core i5 8600K has an unlocked multiplier, the average processor does not.
    What it is: Has an unlocked CPU multiplier, which makes manual CPU overclocking much easier on supported platforms.
    When it matters: When you plan to push clock speeds beyond stock settings instead of leaving the processor completely at default behavior.

    Importance: MEDIUM

    Intel Core i5 8600K has an unlocked multiplier, the average processor does not.
  • Supports memory overclocking
    Intel Core i5 8600K supports memory overclocking, the average processor does not.
    What it is: Allows memory speeds beyond official stock settings through manual tuning or profile-based overclocking.
    When it matters: When you want to push RAM performance higher than stock support allows, especially in enthusiast or gaming builds.

    Importance: MEDIUM

    Intel Core i5 8600K supports memory overclocking, the average processor does not.
  • 2x more memory capacity
    Intel Core i5 8600K has more maximum memory capacity than the average processor (128 GB vs 64 GB). The average processor supports 64 GB of memory.
    What it is: The largest total amount of memory officially supported by the processor.
    When it matters: When you plan a system with very large RAM capacity.

    Importance: HIGH

    Good value: >=128 GB

    Intel Core i5 8600K has more maximum memory capacity than the average processor (128 GB vs 64 GB). The average processor supports 64 GB of memory.128 GB vs 64 GB
  • 10x more popular
    Intel Core i5 8600K is more popular than the average processor (10.00 vs 1.000).
    What it is: An indicator based on the number of reviews received by the processor.
    When it matters: When you prefer to choose a processor reviewed and selected by many other buyers.
    Intel Core i5 8600K is more popular than the average processor (10.00 vs 1.000).10 vs 1
  • 17.9% higher user score
    Intel Core i5 8600K has a higher user score than the average processor (9.44 vs 8.000).
    What it is: A rating that combines user reviews and the total number of reviews received by the processor.
    When it matters: When you want to know how a processor performs in real workloads and how reliable it is for gaming, productivity, and efficiency according to user feedback.
    Intel Core i5 8600K has a higher user score than the average processor (9.44 vs 8.000).9.44 vs 8
  • Modern CPU socket
    Intel Core i5 8600K uses a more modern CPU socket than the average processor (LGA1,151 vs FP2).
    What it is: The physical socket the processor fits into on the motherboard.
    When it matters: When you need to make sure the CPU can actually be installed on a specific motherboard.

    Importance: HIGH

    Intel Core i5 8600K uses a more modern CPU socket than the average processor (LGA1,151 vs FP2).LGA1151 vs FP2
  • 19.9% higher multi-core score
    Intel Core i5 8600K has a higher Geekbench 6 multi-core score than the average processor (5,748 vs 4,793). The average processor scores 4,793 in Geekbench 6 multi-core.
    What it is: A Geekbench 6 score that reflects multi-core CPU performance in mixed modern workloads.
    When it matters: When you want a quick picture of multi-core speed in everyday mixed workloads, multitasking, and broadly optimized software.

    Importance: HIGH

    Good value: >8500

    Intel Core i5 8600K has a higher Geekbench 6 multi-core score than the average processor (5,748 vs 4,793). The average processor scores 4,793 in Geekbench 6 multi-core.5,748 vs 4,793
  • Modern CPU socket
    Intel Core i5 8600K uses a more modern CPU socket than the average processor (LGA1,151 vs FP2).
  • Unlocked for overclocking
    Intel Core i5 8600K has an unlocked multiplier, the average processor does not.
  • 19.9% higher multi-core score
    Intel Core i5 8600K has a higher Geekbench 6 multi-core score than the average processor (5,748 vs 4,793). The average processor scores 4,793 in Geekbench 6 multi-core.
  • Supports memory overclocking
    Intel Core i5 8600K supports memory overclocking, the average processor does not.
  • 2x more memory capacity
    Intel Core i5 8600K has more maximum memory capacity than the average processor (128 GB vs 64 GB). The average processor supports 64 GB of memory.
  • 3 year/s older release date
    Intel Core i5 8600K has an older release date than the average processor (2,017 vs 2,020).
    October 2017
  • 29.3% lower Cinebench R20 single-core score
    Intel Core i5 8600K has a lower Cinebench R20 single-core score than the average processor (342 vs 484). The average processor scores 484 in Cinebench R20 single-core.
  • No multithreading support
    Intel Core i5 8600K does not support multithreading, the average processor does.
  • 21.6% weaker multi-core performance
    Intel Core i5 8600K has a lower multi-core performance than the average processor (2,181 vs 2,783). The average processor scores 2,783 in Cinebench R20 multi-core.
  • 1 fewer threads per core
    Intel Core i5 8600K has fewer threads per core than the average processor (1 vs 2). The average processor offers 2 threads per core.
  • 2 fewer CPU threads
    Intel Core i5 8600K has fewer CPU threads than the average processor (6 vs 8). The average processor has 8 CPU threads.
  • 16.7% larger process node
    Intel Core i5 8600K has a higher process node than the average processor (14 nm vs 12 nm). The average processor uses a process node of 12 nm.
  • 50% less L2 per core
    Intel Core i5 8600K has less L2 cache per core than the average processor (0.3 MB/core vs 0.5 MB/core). The average processor provides 0.5 MB/core of L2 cache per core.
  • 12.5% less L3 per core
    Intel Core i5 8600K has less L3 cache per core than the average processor (1.5 MB/core vs 1.714 MB/core). The average processor provides 1.714 MB/core of L3 cache per core.
  • 40% smaller L2 cache
    Intel Core i5 8600K has a lower L2 cache than the average processor (1.5 MB vs 2.5 MB). The average processor has L2 cache of 2.5 MB.
  • 9.2% lower memory bandwidth
    Intel Core i5 8600K has a lower memory bandwidth than the average processor (41.6 GB/s vs 45.8 GB/s). The average processor offers memory bandwidth of 45.8 GB/s.
  • 9.1% lower memory speed
    Intel Core i5 8600K has a lower maximum memory speed than the average processor (2,666 MHz vs 2,933 MHz). The average processor supports memory speed of 2,933 MHz.
  • Narrower media codec support
    Intel Core i5 8600K supports fewer media codecs than the average processor (H.265 (HW decode), VP9 (HW decode), JPEG (HW decode) vs H.264 (HW decode/encode), H.265 (HW decode/encode), VP9 (HW decode/encode), AV1 (HW decode)).
  • 2.11x higher base power
    Intel Core i5 8600K has a higher base power draw than the average processor (95 W vs 45 W). The average processor has a base power draw of 45 W.
  • 85.9% higher boost power
    Intel Core i5 8600K has a higher boost power draw than the average processor (119 W vs 64 W). The average processor has a boost power draw of 64 W.
  • No configurable TDP
    Intel Core i5 8600K does not support configurable TDP, the average processor does.
  • 2.11x higher TDP
    Intel Core i5 8600K has a higher TDP than the average processor (95 W vs 45 W). The average processor has a TDP of 45 W.
  • 20 seconds shorter turbo duration
    Intel Core i5 8600K has a lower turbo duration limit than the average processor (8 seconds vs 28 seconds). The average processor maintains turbo for 28 seconds.
  • 29.3% lower Cinebench R20 single-core score
    Intel Core i5 8600K has a lower Cinebench R20 single-core score than the average processor (342 vs 484). The average processor scores 484 in Cinebench R20 single-core.
    What it is: A Cinebench R20 benchmark score that reflects single-core CPU performance.
    When it matters: When you care about lighter workloads, interface responsiveness, or software that still depends heavily on one fast core.

    Importance: HIGH

    Good value: >600

    Intel Core i5 8600K has a lower Cinebench R20 single-core score than the average processor (342 vs 484). The average processor scores 484 in Cinebench R20 single-core.342 vs 484
  • 2.11x higher base power
    Intel Core i5 8600K has a higher base power draw than the average processor (95 W vs 45 W). The average processor has a base power draw of 45 W.
    What it is: The sustained power target used for longer CPU loads.
    When it matters: When you choose cooling and power delivery for sustained workloads.

    Importance: MEDIUM

    Good value: <30 W

    Intel Core i5 8600K has a higher base power draw than the average processor (95 W vs 45 W). The average processor has a base power draw of 45 W.95 W vs 45 W
  • No multithreading support
    Intel Core i5 8600K does not support multithreading, the average processor does.
    What it is: Lets each physical core run more than one thread at the same time, such as with Hyper-Threading or SMT.
    When it matters: When multitasking, rendering, compiling, virtualization, or other thread-heavy work benefits from more total processing threads.

    Importance: HIGH

    Intel Core i5 8600K does not support multithreading, the average processor does.
  • 85.9% higher boost power
    Intel Core i5 8600K has a higher boost power draw than the average processor (119 W vs 64 W). The average processor has a boost power draw of 64 W.
    What it is: The short-term boost power limit the processor may draw under heavier turbo loads.
    When it matters: When you size cooling and power delivery for peak turbo behavior.

    Importance: MEDIUM

    Good value: <50 W

    Intel Core i5 8600K has a higher boost power draw than the average processor (119 W vs 64 W). The average processor has a boost power draw of 64 W.119 W vs 64 W
  • 16.7% larger process node
    Intel Core i5 8600K has a higher process node than the average processor (14 nm vs 12 nm). The average processor uses a process node of 12 nm.
    What it is: The manufacturing process node used to produce the processor, usually expressed in nanometers.
    When it matters: When efficiency, heat, and the relative modernity of the chip-making process matter to your comparison.

    Importance: HIGH

    Good value: <10 nm

    Intel Core i5 8600K has a higher process node than the average processor (14 nm vs 12 nm). The average processor uses a process node of 12 nm.14 nm vs 12 nm
  • 50% less L2 per core
    Intel Core i5 8600K has less L2 cache per core than the average processor (0.3 MB/core vs 0.5 MB/core). The average processor provides 0.5 MB/core of L2 cache per core.
    What it is: The amount of L2 cache available to each CPU core.
    When it matters: When you are comparing per-core cache resources in deeper architectural analysis.

    Importance: LOW

    Good value: >=1 MB/core

    Intel Core i5 8600K has less L2 cache per core than the average processor (0.3 MB/core vs 0.5 MB/core). The average processor provides 0.5 MB/core of L2 cache per core.0.25 MB/core vs 0.5 MB/core
  • No configurable TDP
    Intel Core i5 8600K does not support configurable TDP, the average processor does.
    What it is: Allows the processor to run in alternate power modes instead of being fixed to one default TDP target.
    When it matters: When you want more control over heat, noise, and power draw in compact systems, quieter builds, or thermally limited machines.

    Importance: LOW

    Intel Core i5 8600K does not support configurable TDP, the average processor does.
  • 2.11x higher TDP
    Intel Core i5 8600K has a higher TDP than the average processor (95 W vs 45 W). The average processor has a TDP of 45 W.
    What it is: The rated thermal design power, which gives a general idea of cooling and power needs.
    When it matters: When you choose a cooler or build in a tighter case.

    Importance: HIGH

    Good value: <30 W

    Intel Core i5 8600K has a higher TDP than the average processor (95 W vs 45 W). The average processor has a TDP of 45 W.95 W vs 45 W

Graphic comparison of Intel Core i5 8600K and other processors

Attribute category
Attribute
No results found

Third-party reviews

(Reviews last updated: May 2026)

What customers like about Intel Core i5 8600K?

  • Excellent gaming performance that rivals previous-generation Core i7 models
  • Six physical cores offer a substantial boost for multi-threaded workloads
  • Superb overclocking potential, often reaching 5.0 GHz or higher with ease
  • High instructions per clock (IPC) and clock speeds benefit single-threaded apps
  • Strong value for gaming-focused builds compared to more expensive i7 chips

What customers dislike about Intel Core i5 8600K?

  • Lacks Hyper-Threading, putting it at a disadvantage in heavy content creation
  • Requires a new 300-series motherboard, despite using the same LGA 1151 socket
  • Does not include a stock cooler, adding to the total build cost
  • High power consumption and temperatures when pushed to high overclocks
  • Struggles to compete with Ryzen's value in highly threaded tasks like 3D rendering

Expert reviews

T
tomshardware.com
03/01/2018

The AMD Ryzen 5 1600X proves superior for simultaneous gaming and streaming due to its 12-thread architecture, offering a smoother, more balanced experience than the Intel Core i5-8600K, which struggles with encoding despite higher raw FPS. While Intel's Coffee Lake added cores, older four-thread chips like the Core i5-7600K cannot handle modern streaming loads, resulting in...Read more

T
techspot.com
15/11/2017

TechSpot's CPU analysis of Assassin’s Creed Origins highlights the title as exceptionally demanding, utilizing up to 16 threads, with high-end Intel processors providing the smoothest performance. While initially reported as "unplayable" on quad-core CPUs, testing confirms that 4-core chips like the i5-7600K remain functional, albeit with performance limitations in dense, crowded...Read more

T
techporn.ph
05/10/2017

The Intel Core i5-8600K, an 8th-gen "Coffee Lake" processor with six cores and 3.6 GHz base frequency, offers a significant performance boost over prior quad-core i5 models for gaming and single-threaded tasks. While lacking Hyper-Threading, the CPU excels in gaming and maintains high clock speeds, often outperforming the i7-7700K in various benchmarks. Key pros include exceptional...Read more

R
rockpapershotgun.com
04/07/2019

The Intel Core i5-8600K, a six-core processor with a 3.6GHz base and 4.3GHz boost, was lauded as a top-tier mid-range gaming CPU capable of outperforming rivals in 1080p and 1440p benchmarks. Its exceptional gaming performance in titles like Shadow of the Tomb Raider remains a key strength. However, at the time of review, soaring prices made it less attractive than newer, similarly...Read more

D
digitalfoundry.net
05/12/2017

Digital Foundry's review highlights Intel's Coffee Lake-S Core i5-8400 and i5-8600K as a major step forward, offering significant 6-core performance gains over previous generations. The i5-8600K is lauded for high-end, overclockable gaming performance, while the i5-8400 is considered a top-value, high-performance option at its price point, often rivaling the i7-7700K. However, the...Read more

T
techspot.com
18/10/2017

According to TechSpot's review, 8th Gen Intel Core CPUs, particularly the i5-8400 and i7-8700K, reclaimed the gaming performance crown by delivering higher frame rates, often 24-30% faster than Ryzen counterparts in CPU-bound scenarios. While Intel's superior architecture and high clock speeds constitute a major pro for gaming, a drawback is the reliance on more expensive Z370...Read more

T
tomshardware.com
17/10/2017

The Intel Core i5-8600K review from Tom's Hardware highlights a significant, six-core architecture shift that delivers gaming performance rivaling the previous flagship i7-7700K at a lower price point. While offering excellent, easily attainable 4.9 GHz+ overclocking capabilities, the chip's performance in heavily threaded, professional applications is somewhat limited by the lack...Read more

T
techpowerup.com
05/10/2017

The TechPowerUp review highlights the Intel Core i5-8600K as a significant, six-core upgrade in Intel's mid-range, offering superior gaming performance. Built on the 14nm++ "Coffee Lake" architecture with high clock speeds and 9MB L3 cache, it delivers exceptional speed, though it lacks Hyper-Threading. Key advantages include market-leading gaming capability, strong overclocking...Read more

E
eteknix.com
30/10/2017

The Intel Core i5-8600K introduced a significant performance leap by upgrading to six cores, directly competing with AMD's Ryzen series to deliver massive improvements in multi-tasking and productivity. The 3.6 GHz chip, featuring easy overclocking up to 5.1-5.2 GHz and strong thermal efficiency, is considered an exceptional, cost-effective all-rounder for both gaming and...Read more

B
bit-tech.net
28/12/2017

The Intel Core i5-8600K acts as a pivotal six-core, six-thread Coffee Lake CPU, delivering exceptional gaming performance that often rivals older i7 models. Pros highlighted by the review include strong multi-core performance over the previous generation, efficient soldering for better thermals, and high overclocking potential (4.8GHz+). However, the CPU’s lack of Hyper-Threading...Read more

G
guru3d.com
13/10/2017

The Guru3D review highlights the Intel Core i5-8600K as a significant 14nm "Coffee Lake" upgrade, introducing six physical cores to the mainstream lineup with a 3.6 GHz base and 4.3 GHz turbo clock. Praised as a top-tier gaming processor, it offers high performance that rivals previous-generation i7 models, bolstered by strong multi-threaded capabilities and exceptional 5.0 GHz...Read more

G
gamestar.de
11/05/2018

The GameStar review highlights the Intel Core i5-8600K as a major upgrade, featuring six cores on the 14nm++ Coffee Lake architecture that often rivals previous i7-7700K performance. Pros include superb gaming capabilities, sitting within 5% of the i7-8700K, and high overclocking potential (5.0 GHz+) for enthusiasts. However, drawbacks include the lack of Hyper-Threading, a...Read more

P
pcgameshardware.de
06/10/2017

According to PC Games Hardware, the Intel Core i7-8700K is a standout performer, setting a new benchmark for gaming with its six cores, though it brings high power consumption when overclocked and requires a new Z370 motherboard. The i5-8600K acts as the enthusiast "sweet spot," offering excellent overclocking potential to 5.0 GHz and competitive gaming speeds, but it lacks...Read more

H
hardwareluxx.de
05/10/2017

The Intel Coffee Lake launch, featuring the 6-core i7-8700K, i5-8600K, and i5-8400, marks a significant shift toward higher core counts on the mainstream desktop platform, utilizing a refined 14nm++ process for improved efficiency. The i7-8700K delivers excellent gaming and multi-threaded performance (up to 4.7 GHz boost), while the i5-8400 provides high value, often matching older...Read more

C
computerbase.de
07/11/2017

The ComputerBase review of the Intel Core i7-8700 and i5-8600K highlights a major performance leap for Intel's mainstream lineup, driven by the move to a six-core architecture. The i7-8700 delivers exceptional multi-threaded performance, often surpassing higher-core-count competitors, while the i5-8600K excels in gaming with high overclocking potential. Benefits include improved...Read more

T
tomshardware.fr
17/10/2017

The Intel Core i5-8600K review highlights a significant shift to six physical cores, offering exceptional gaming performance that often rivals previous-generation i7 models at a better value. The processor delivers high responsiveness and strong overclocking potential (4.9-5.0 GHz), providing substantial gains in both gaming and productivity over quad-core predecessors. However, the...Read more

P
profesionalreview.com
14/09/2017

The Intel Core i5-8600K introduced six physical cores to the i5 lineup, offering a 3.6 GHz base frequency and 4.3 GHz boost. Early Geekbench results indicated significant multi-core performance gains, with the chip rivaling the previous-generation i7-7700K. Pros include exceptional gaming performance and strong overclocking potential, with many chips achieving 5.0 GHz to 5.2 GHz....Read more

E
elchapuzasinformatico.com
25/10/2017

The Intel Core i5-8600K review from El Chapuzas Informático highlights the 6-core/6-thread Coffee Lake processor as a top-tier mid-range option, offering significant multi-threaded improvements over previous generations with a 3.6 GHz base and 4.3 GHz turbo clock. A key pro is its excellent gaming performance and high overclocking potential (5.0 GHz+), while a notable con is the...Read more

P
profesionalreview.com
05/10/2017

The Intel Core i5-8600K introduced a six-core architecture to the mid-range lineup, featuring a 14nm++ "Coffee Lake" design with a 3.6 GHz base clock. It delivers substantial performance gains over previous quad-core models, specifically in multi-threaded tasks, despite lacking Hyper-Threading. The CPU offers excellent gaming performance and strong overclocking potential, often...Read more

M
multiplayer.it
25/10/2017

The Intel Core i5-8400 and i5-8600K, analyzed by Multiplayer.it, represent a significant, mainstream shift for Intel by introducing six physical cores to the 8th-generation Coffee Lake lineup. The i5-8600K caters to enthusiasts with a 3.6 GHz base clock and high overclocking potential, while the i5-8400 operates as a locked, power-efficient, and high-value alternative at 2.8 GHz....Read more

T
tomshw.it
20/10/2017

The Intel Core i5-8600K review highlights a significant performance leap due to its six-core architecture, with gaming performance often rivaling the higher-tier i7-7700K and i7-8700K. The CPU provides excellent value for gamers and desktop users through high stock clock speeds, marking a substantial improvement over the previous quad-core generation. Overclocking is a major...Read more

H
hwupgrade.it
05/10/2017

The 8th Generation "Coffee Lake" lineup, including the Core i7-8700K and i5-8600K/8400, represents a significant shift for Intel by introducing 6-core processors to the mainstream market to compete with AMD Ryzen. These processors deliver exceptional gaming and multi-threaded performance, with the i7-8700K leading in speed, while the i5-8400 offers high-value efficiency and the...Read more

T
tomshw.it
20/10/2017

The Intel Core i5-8600K introduced six physical cores to the mainstream i5 line, providing a substantial, "jolting" performance boost over its predecessor with a 3.6 GHz base clock and 4.3 GHz turbo. A key pro is its superior gaming performance, which often matches the more expensive Core i7-7700K. The processor is an excellent overclocker, capable of hitting 5.0 GHz or higher,...Read more

T
techpulse.be
05/10/2017

Intel's 8th-generation "Coffee Lake" launch marks a significant shift, bringing six cores to the mainstream lineup with the Core i7-8700K and Core i5-8400, offering up to 45% better multi-threaded performance. Key advantages include exceptional "mega-tasking" capabilities, high-refresh-rate gaming, and competitive pricing that directly challenges competitors, all while utilizing the...Read more

T
techgaming.nl
09/10/2017

The Intel Core i5-8600K "Coffee Lake" processor introduces a significant upgrade to the i5 lineup with a six-core, six-thread architecture, offering a substantial performance boost over the previous quad-core i5-7600K. It provides exceptional gaming performance that often rivals older i7 flagships, making it a strong choice for mid-range gaming builds. Key pros include high...Read more

T
techtesters.eu
05/10/2017

The TechTesters review highlights the Intel Core i7-8700K and i5-8600K as a significant 6-core transition, with the i7 offering 12 threads for heavy multitasking and the i5 providing a 6-thread, high-frequency option. While the i7-8700K excels in productivity, gaming performance between the two is remarkably close, with less than a 5% difference in most titles, despite the i7...Read more

T
tweakers.net
09/10/2017

The Intel Core i5-8600K, as analyzed in reviews, serves as a significant mid-range milestone by shifting to six physical cores, providing a substantial 20-30% performance boost over its predecessor. Key advantages include exceptional gaming performance and strong overclocking capabilities reaching 4.8-5.0 GHz. However, the CPU requires a 300-series motherboard (e.g., Z370) despite...Read more

H
hardware.info
21/03/2018

The Intel Core i5-8600K introduces a significant upgrade to Intel’s mainstream lineup by adopting a six-core, six-thread configuration on the Coffee Lake architecture. Built on an improved 14nm++ process, this processor operates at a 3.6 GHz base clock with turbo speeds up to 4.3 GHz, targeting gamers and enthusiasts seeking high-end performance without the cost of an i7. The chip...Read more

H
hardware.info
05/10/2017

Intel's 8th-generation "Coffee Lake" processors, including the i7-8700K and i5-8400, introduced six-core configurations to the mainstream market, providing significant multi-threaded performance gains. While the lineup, particularly the 4.7 GHz i7-8700K, excels in gaming and application performance, a major downside is the requirement for new Z370 motherboards, rendering older,...Read more

T
tweakers.net
09/10/2017

The Intel Core i5-8600K review on Tweakers.net highlights a significant, long-overdue upgrade for Intel’s mainstream lineup, driven by the shift from four to six physical cores. This added "brawn" bridges the performance gap with higher-tier i7 models, offering superior multi-threaded performance compared to older quad-core predecessors. Pros highlighted include excellent gaming...Read more

Video reviews

Compare Intel Core i5 8600K with other processors

VS
VS

Compare