OVERALL
SPECS
VS AVERAGE
REVIEWS
ALTERNATIVES

Intel Core i5 8400B Review | 78 Data compared

double-arrow
  • Avg. price in UK: ~£160
  • Avg. price in US: ~$180
  • PassMark benchmark result: 9228
  • N. of physical cores: 6
  • CPU boost clock speed: 4.0 GHz

Intel Core i5 8400B review. Compare 78 technical specifications and user reviews to see how it ranks among processors and if it is worth buying.

4.3

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%

4.3

Technical Score

10.0%

?

User score

Poor
4.3

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%

3.6

Performance

18.0%

4.9

Cache & Architecture

10.0%

4.9

Memory & PCIe

7.0%

6.4

Power & Thermal

4.0%

6.9

Platform

1.0%

7.1

Integrated Graphics

Poor
?

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%

?

User reviews

30.0%

?

Popularity

  • 3.6
    Gaming

    Score components:

    30.0%

    3.8

    PassMark single-core benchmark score

    25.0%

    3.9

    Geekbench 6 single-core benchmark score

    20.0%

    4.6

    CPU boost clock speed

    17.0%

    2.3

    L3 cache

    8.0%

    2.6

    N. of physical cores

  • 2.5
    Video editing

    Score components:

    45.0%

    2.7

    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

  • No image
No image

Best prices in UK

    N/A~ £160

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 i5-8400B is an 8th-generation Coffee Lake processor featuring 6 physical cores and 6 threads with a 14nm lithography. It operates at a base frequency of 2.80 GHz, reaching a maximum turbo boost of 4.00 GHz, and is equipped with a 9 MB Intel Smart Cache and a 65W TDP. Main pros include its integrated Intel UHD Graphics 630, support for up to 64 GB of dual-channel DDR4-2666 memory, and high efficiency for multitasking and mid-range gaming. However, its primary cons are the lack of Hyper-Threading technology, an non-overclockable locked multiplier, and its status as a discontinued product on an older LGA1151 socket platform.

Technical Specifications of processor Intel Core i5 8400B

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%

?

Performance

18.0%

?

Cache & Architecture

10.0%

?

Memory & PCIe

7.0%

?

Power & Thermal

4.0%

?

Platform

1.0%

?

Integrated Graphics

4.3
Intel Core i5 8400B has a technical score of 4.32 points, which is lower than that of 70.4% 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%

0.0

User reviews

30.0%

1.0

Popularity

?
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.
1.0
Intel Core i5 8400B has a popularity of 1 points, which is higher than 0% 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%

4.3

Overall score

40.0%

9.7

Price

5.9
Intel Core i5 8400B has a quality-to-price ratio of 5.9 points, which is lower than 69.8% 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

mobile
Intel Core i5 8400B belongs to the mobile processor class, which is more advanced than that of 7.3% of processors and equal to that of 48.6% 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

FCBGA1440
Intel Core i5 8400B uses the FCBGA1440 CPU socket, which is older than that of 81.4% of processors and equal to that of 4.8% 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

Intel 300 Series
Intel Core i5 8400B supports Intel 300 Series chipsets, which is broader compatibility than 54.7% of processors and equal to that of 1.7% 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 8400B 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 8400B 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 8400B 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 8400B 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

4.0 GHz
Intel Core i5 8400B reaches a boost clock of 4.0 GHz which is lower than that of 59.8% of processors and equal to that of 5% 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 2.8 GHz
Intel Core i5 8400B has a base clock of 6x2.8 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 8400B 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 8400B 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 8400B 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 8400B 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 8400B 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/LPDDR3
Intel Core i5 8400B supports DDR DDR4/LPDDR3, which is newer than that of 58.1% of processors and equal to that of 2.1% 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 8400B 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

2,666 MHz
Intel Core i5 8400B supports JEDEC memory speeds up to 2666 MHz, which is lower than that of 62.7% of processors and equal to 0.6% 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

64 GB
Intel Core i5 8400B supports up to 64 GB of memory, which is more than 28.4% of processors and equal to 27.6% 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 8400B 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 8400B 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 8400B 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 8400B 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.264 (HW decode/encode), H.265 (HW decode/encode), VP9 (HW decode), VP8 (HW decode), MPEG-2 (HW decode), JPEG (HW decode)
Intel Core i5 8400B supports H.264 (HW decode/encode), H.265 (HW decode/encode), VP9 (HW decode), VP8 (HW decode), MPEG-2 (HW decode), JPEG (HW decode) media codecs, which is broader support than 96.5% 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

65 W
Intel Core i5 8400B has a TDP of 65 W which is higher than that of 70% of processors and equal to that of 16.1% 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

65 W
Intel Core i5 8400B has a base power of 65 W which is higher than that of 70.3% of processors and equal to that of 16.4% 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

?
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

28 seconds
Intel Core i5 8400B has a turbo duration of 28 seconds which is longer than that of 3.8% of processors and equal to that of 85% 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 8400B does not support configurable TDP. 52.9% of processors support configurable TDP.
Show more

Intel Core i5 8400B vs the average processor

  • Includes stock cooler
    Intel Core i5 8400B includes a stock cooler, the average processor does not.
    What it is: A stock CPU cooler is included in the box with the processor.
    When it matters: When total build cost matters and you need to know whether separate cooling must be bought right away.

    Importance: MEDIUM

    Intel Core i5 8400B includes a stock cooler, the average processor does not.
  • Newer DDR support
    Intel Core i5 8400B supports a newer DDR generation than the average processor (DDR4/LPDDR3 vs DDR4).
    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

    Intel Core i5 8400B supports a newer DDR generation than the average processor (DDR4/LPDDR3 vs DDR4).DDR4/LPDDR3 vs DDR4
  • 16% smaller die size
    Intel Core i5 8400B has a lower die size than the average processor (149.6 mm² vs 178 mm²). The average processor has a die size of 178 mm².
    What it is: The physical area of the processor die, usually measured in square millimeters.
    When it matters: When you are comparing chip scale, packaging density, or broader design differences rather than direct user-visible performance.

    Importance: LOW

    Good value: <150 mm²

    Intel Core i5 8400B has a lower die size than the average processor (149.6 mm² vs 178 mm²). The average processor has a die size of 178 mm².149.6 mm² vs 178 mm²
  • 16% smaller die size
    Intel Core i5 8400B has a lower die size than the average processor (149.6 mm² vs 178 mm²). The average processor has a die size of 178 mm².
  • Newer DDR support
    Intel Core i5 8400B supports a newer DDR generation than the average processor (DDR4/LPDDR3 vs DDR4).
  • Includes stock cooler
    Intel Core i5 8400B includes a stock cooler, the average processor does not.

Total
Cache & Architecture
Memory & PCIe
Power & Thermal
  • Narrower instruction support
    Intel Core i5 8400B supports a narrower instruction set than the average processor (SSE4.1, SSE4.2, AVX2 vs MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, F16C, FMA3, AES, SHA).
  • Older CPU socket
    Intel Core i5 8400B uses an older CPU socket than the average processor (FCBGA1,440 vs FP2).
  • No crypto acceleration
    Intel Core i5 8400B does not include crypto acceleration, the average processor does.
  • 2 year/s older release date
    Intel Core i5 8400B has an older release date than the average processor (2,018 vs 2,020).
    April 2018
  • No multithreading support
    Intel Core i5 8400B does not support multithreading, the average processor does.
  • 7% lower boost clock
    Intel Core i5 8400B has a lower boost clock speed than the average processor (4 GHz vs 4.3 GHz). The average processor reaches boost clock speed of 4.3 GHz.
  • 17.7% weaker multi-core performance
    Intel Core i5 8400B has a lower multi-core performance than the average processor (2,291 vs 2,783). The average processor scores 2,783 in Cinebench R20 multi-core.
  • 1 fewer threads per core
    Intel Core i5 8400B 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 8400B has fewer CPU threads than the average processor (6 vs 8). The average processor has 8 CPU threads.
  • 6.2% lower single-core score
    Intel Core i5 8400B has a lower Geekbench 6 single-core score than the average processor (1,380 vs 1,471). The average processor scores 1,471 in Geekbench 6 single-core.
  • 4.6% weaker single-core performance
    Intel Core i5 8400B has a lower PassMark single-core score than the average processor (2,368 vs 2,483). The average processor scores 2,483 in PassMark single-core.
  • 12.4% lower PassMark score
    Intel Core i5 8400B has a lower PassMark benchmark score than the average processor (9,228 vs 10,532.5). The average processor scores 10,532.5 in PassMark benchmark.
  • 16.7% larger process node
    Intel Core i5 8400B 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 8400B 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 8400B 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 8400B 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 8400B 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 8400B 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.
  • 44.4% higher base power
    Intel Core i5 8400B has a higher base power draw than the average processor (65 W vs 45 W). The average processor has a base power draw of 45 W.
  • No configurable TDP
    Intel Core i5 8400B does not support configurable TDP, the average processor does.
  • 44.4% higher TDP
    Intel Core i5 8400B has a higher TDP than the average processor (65 W vs 45 W). The average processor has a TDP of 45 W.
  • Narrower instruction support
    Intel Core i5 8400B supports a narrower instruction set than the average processor (SSE4.1, SSE4.2, AVX2 vs MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, F16C, FMA3, AES, SHA).
    What it is: The supported CPU instruction sets and extensions.
    When it matters: When you run software that depends on specific CPU instructions.

    Importance: MEDIUM

    Intel Core i5 8400B supports a narrower instruction set than the average processor (SSE4.1, SSE4.2, AVX2 vs MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, F16C, FMA3, AES, SHA).SSE4.1, SSE4.2, AVX2 vs MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, F16C, FMA3, AES, SHA
  • No multithreading support
    Intel Core i5 8400B 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 8400B does not support multithreading, the average processor does.
  • 16.7% larger process node
    Intel Core i5 8400B 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 8400B 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
  • 44.4% higher base power
    Intel Core i5 8400B has a higher base power draw than the average processor (65 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 8400B has a higher base power draw than the average processor (65 W vs 45 W). The average processor has a base power draw of 45 W.65 W vs 45 W
  • 50% less L2 per core
    Intel Core i5 8400B 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 8400B 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
  • 7% lower boost clock
    Intel Core i5 8400B has a lower boost clock speed than the average processor (4 GHz vs 4.3 GHz). The average processor reaches boost clock speed of 4.3 GHz.
    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

    Intel Core i5 8400B has a lower boost clock speed than the average processor (4 GHz vs 4.3 GHz). The average processor reaches boost clock speed of 4.3 GHz.4.0 GHz vs 4.3 GHz
  • No configurable TDP
    Intel Core i5 8400B 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 8400B does not support configurable TDP, the average processor does.
  • 12.5% less L3 per core
    Intel Core i5 8400B 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.
    What it is: The amount of L3 cache effectively available per CPU core.
    When it matters: When you are comparing how much shared cache each core can draw on in deeper technical analysis.

    Importance: MEDIUM

    Good value: >=2 MB/core

    Intel Core i5 8400B 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.1.5 MB/core vs 1.714 MB/core
Total
Overall
Platform
Performance
Cache & Architecture
Memory & PCIe
Power & Thermal

Graphic comparison of Intel Core i5 8400B and other processors

Attribute category
Attribute
No results found

Third-party reviews

What customers like about Intel Core i5 8400B?

  • Excellent value for gaming, often described as a 'pound-for-pound' champion
  • Strong gaming performance that can match or exceed previous-generation i7-7700K flagship CPUs
  • Significant upgrade over 7th Gen i5 chips due to the jump from four to six physical cores
  • Efficient power consumption with a 65W TDP, making it relatively easy to cool even with a stock cooler
  • Great budget option in the used market for recycled office PC builds
  • Reliable turbo boost speeds, often hovering around 3.8 to 4.0 GHz during active use

What customers dislike about Intel Core i5 8400B?

  • Lacks Hyper-Threading (6 cores/6 threads), which limits its performance in heavy multi-tasking and professional workloads compared to Ryzen rivals
  • Locked multiplier means there is no official support for overclocking
  • Requires a 300-series motherboard, which was a point of frustration for users on older LGA 1151 boards
  • The included stock cooler can be noisy and 'annoying' under heavy loads
  • Base clock speed of 2.8 GHz is relatively low compared to similar mid-range CPUs
  • Struggles with integrated graphics (UHD 630) for modern AAA gaming, necessitating a dedicated GPU

Expert reviews

H
hardware-mag.de
25/06/2018
Intel Core i7-8700K and i5-8400 Review - Hardware-Mag

The Hardware-Mag.de review details Intel's 8th-generation "Coffee Lake" processors, highlighting the shift to six cores for the i7-8700K and i5-8400, which offers a 50% core increase over predecessors. The i7-8700K provides high-thread performance via Hyper-Threading, while the i5-8400 offers high value, with both chips delivering substantial gains in multi-core tasks and gaming,...Read more

(Translated)Show original
G
gamestar.de
12/04/2018
Intel Core i5-8400 Review: Core i7 Performance at an i5 Price?

According to GameStar, the Intel Core i5-8400 brings six cores to the mainstream, offering performance that challenges previous-generation i7s in gaming and multi-core tasks, with an efficient 4.0 GHz boost clock. Key pros include exceptional value-for-money, low 65W TDP for easy cooling, and strong gaming performance, while cons are limited to its locked multiplier and the required...Read more

(Translated)Show original
C
chip.de
13/02/2018
Intel Core i5-8400 Review - CHIP

The CHIP review highlights the Intel Core i5-8400 as a significant mid-range leap, offering six cores with a 2.8 GHz base and 4.0 GHz boost clock. It excels in price-to-performance, rivaling previous-generation i7s in gaming and productivity while maintaining efficiency with a 65W TDP. Pros include top-tier gaming performance and the inclusion of a stock cooler. Cons involve the...Read more

(Translated)Show original
P
pcwelt.de
30/10/2017
Intel Core i5-8400 Review: Gaming Processor with Great Value for Money

The Intel Core i5-8400, as reviewed by PC-WELT, is a high-value, 6-core processor that significantly enhances gaming performance at a sub-200 euro price point, frequently challenging higher-end, older processors. It features a 4.0 GHz boost clock and offers exceptional frames-per-euro, effectively serving as a top-tier option for mid-range gaming builds. Key advantages (pros)...Read more

(Translated)Show original
H
hardwareluxx.de
05/10/2017
Coffee Lake: Intel Core i7-8700K, i5-8600K and i5-8400 review

The Hardwareluxx review of Intel's Coffee Lake lineup highlights a significant move to 6-core processors for the mainstream market, with the i7-8700K delivering a 45–50% multi-threaded performance increase over its predecessor. The lineup boasts excellent gaming performance that frequently outpaces competitors, though it requires new Z370 motherboards despite using an LGA 1151...Read more

(Translated)Show original

Video reviews

Best alternatives

intel-core-ultra-9-285k
Intel Core Ultra 9 285K

Processors

8.9
amd-ryzen-threadripper-pro-9965wx
AMD Ryzen Threadripper Pro 9965WX

Processors

8.8
amd-ryzen-threadripper-pro-9995wx
AMD Ryzen Threadripper Pro 9995WX

Processors

8.8
amd-ryzen-threadripper-9960x
AMD Ryzen Threadripper 9960X

Processors

8.8
amd-ryzen-threadripper-7970x
AMD Ryzen Threadripper 7970X

Processors

8.7
amd-ryzen-threadripper-pro-9985wx
AMD Ryzen Threadripper Pro 9985WX

Processors

8.7
intel-core-ultra-9-285
Intel Core Ultra 9 285

Processors

8.6
amd-ryzen-threadripper-pro-9975wx
AMD Ryzen Threadripper Pro 9975WX

Processors

8.6
amd-ryzen-threadripper-pro-7985wx
AMD Ryzen Threadripper Pro 7985WX

Processors

8.6
amd-ryzen-9-9950x3d
AMD Ryzen 9 9950x3d

Processors

8.6
intel-core-i9-13900k
Intel Core i9 13900K

Processors

8.5
amd-ryzen-threadripper-pro-7965wx
AMD Ryzen Threadripper Pro 7965WX

Processors

8.5

Compare Intel Core i5 8400B with other processors

VS
VS

Compare