OVERALL
ALTERNATIVES
SPECS
VS AVERAGE
REVIEWS
Scored using Processors Methodology v3.0
Processors Methodology v3.0
Mathematical & Unbiased Scoring
Products in this category are scored under Frontum Processors Methodology v3.0: the technical score from the specifications is the base, and independent expert and video reviews (up to ±0.5 points), owner opinions (up to ±0.3) and best-of lists (up to +0.3) move it up or down.
Explore Processors Methodology v3.0

Intel Core i5-8400H review: 74 specs compared

Avg. price:~£210PassMark multi-core score:7514N. of physical cores:4CPU boost clock speed:4.2 GHzCPU socket:FCBGA1440TDP (Thermal design power):45 W

Intel Core i5-8400H Review: Compare 74 technical specifications and 1 expert reviews to see how this product ranks in the Processors category and whether it is worth buying.

5.6/10

Overall score

Score
5.6/ 10
✕
What it is
Our main score for this model, 1–10. It combines specs, expert reviews, best-of lists and owners.
How we count it
Parts: Technical score 40%, Reviews score 25%, List score 25%, Sentiment score 10%
Marks: Each part gets a mark out of 10. For reviews, lists and owners, a typical model in this category gets about 8 and the best one gets 10.
No data yet: A part with no data shows "?". It counts as the mark of a weaker model in this category (4 in 5 models with data score higher). This way, models with reviews, lists and owners usually come out ahead.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 88% of models
Score components

40%

4.7

Technical score

25%

4.7

Reviews score

25%

?

List scoreNot enough data yet, so we use 7.5, the mark of a weaker model in this category

10%

?

Sentiment scoreNot enough data yet, so we use 7.0, the mark of a weaker model in this category

â–¼Worse than 88% of processors
6.8

Value for money

Value for money
6.8/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 79% of models
Score components

70%

5.6

Overall score

30%

9.4

Price

â–¼Worse than 79%
4.7

Technical score

Technical score
4.7/ 10
✕
What it is
How good the specs are compared with the other models in this category, 1–10.
How we count it
Areas: We rate the specs in each area against the other models in this category.
Weighting: The areas that matter most to buyers count more. The shares are shown under Score components.
Share: The technical score is 40% of the overall score.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 66% of models
Score components

60%

4.1

Performance

18%

4.9

Architecture

10%

5.0

Memory & PCIe

7%

7.0

Power & Thermal

4%

7.0

Platform

1%

7.3

Integrated graphics

â–¼Worse than 66%
4.7

Reviews score

Reviews score
4.7/ 10
✕
What it is
Average grade from independent test sites, magazines and video reviewers, 1–10.
How we count it
Grades: Each review's own score is converted to 1–10; without one, we grade the review ourselves. Big test sites count more, short reviews half as much as full tests. A video review counts half.
Score: The average grade is 80% of the review mark; the number of reviews is the other 20% (1 review = 5, the typical number in this category = 8, the most-reviewed model = 10).
Enough data: With few reviews, the average grade is pulled toward the typical grade of this category. No reviews yet: 7.2 for now.
Share: Reviews count 25% of the overall score.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 79% of models

4.7

Mark 7.3 is below the typical mark 7.6 of this category, so it cannot lift the score above the technical score

80%

7.9

Average grade

20%

5.0

Popularity

Grades by review (1)
1 review, with a printed score. Reviews count 25% of the overall score.
User ratings collected online are not part of this score.
â–¼Worse than 79%
?

List score

List score
7.5/ 10
✕
What it is
How often independent test sites, magazines and video reviewers put this model in their best-of lists for this category.
How we count it
Points: The model in the most lists of this category gets 10; the others get 8 to 10 in proportion. In no list yet: 7.5. Lists count 25% of the overall score.
Enough data: Every list counts, even a single one. With fewer than 5 best-of lists in the category, this part is left out.
Lists with this model (0)
Not in any best-of list yet, so this part counts as 7.5. Models in a list get 8 to 10.
Not in any best-of list yet
  • No image
No image
Where to buy
    N/A~ £210
Best rankings
Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.
Loading category ranking...

Technical Specifications of processor Intel Core i5-8400H

Technical score
Technical score
4.7/ 10
✕
What it is
How good the specs are compared with the other models in this category, 1–10.
How we count it
Areas: We rate the specs in each area against the other models in this category.
Weighting: The areas that matter most to buyers count more. The shares are shown under Score components.
Share: The technical score is 40% of the overall score.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 66% of models
Score components:

60%

4.1

Performance

18%

4.9

Architecture

10%

5.0

Memory & PCIe

7%

7.0

Power & Thermal

4%

7.0

Platform

1%

7.3

Integrated graphics

4.7
Reviews score
4.7
List score
?
Value for money
Value for money
6.8/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 79% of models
Score components:

70%

5.6

Overall score

30%

9.4

Price

6.8
Processor type
mobile
This processor belongs to the mobile processor class, which is more advanced than that of 6.9% of processors and equal to that of 47.7% of processors.
CPU socket
FCBGA1440
This processor uses the FCBGA1440 CPU socket, which is older than that of 82.6% of processors and equal to that of 4.5% of processors.
Chipset
Intel 300 Series
This processor supports Intel 300 Series chipsets, which is broader compatibility than 55% of processors and equal to that of 1.7% of processors.
CPU architecture
x86-64
This processor uses the x86-64 architecture, which is more advanced than that of 1.8% of processors and equal to that of 98.2% of processors.
Instruction sets
SSE4.1, SSE4.2, AVX2
This processor supports SSE4.1, SSE4.2, AVX2 instruction sets, which is narrower support than 88.2% of processors and equal to that of 9.7% of processors.
Show more
N. of physical cores
4
Market range: <2 – >12
This processor has 4 CPU cores, which is fewer than 52.8% of processors and equal to 27.5% of processors.
CPU threads
8
Market range: <4 – >24
This processor offers 8 CPU threads, which is more than 33.4% of processors and equal to 18.8% of processors.
CPU boost clock speed
4.2 GHz
Market range: <3 GHz – >5.5 GHz
This processor reaches a boost clock of 4.2 GHz which is lower than that of 54.4% of processors and equal to that of 4.2% of processors.
CPU base clock speed
4x 2.5 GHz
This processor has a base clock of 4x2.5 GHz which is lower than that of 67.7% of processors and equal to that of 1% of processors.
PassMark multi-core score
7,514
Market range: <2.5k – >32.5k
This processor scores 7,514 in PassMark, which is lower than 60.8% of processors.
Show more
Semiconductor size
14 nm
Market range: <4 nm – >24 nm
This processor uses a 14 nm process node, which is older than that of 52% of processors and equal to that of 32.9% of processors.
Foundry
Intel 14 nm
This processor is built on the Intel 14 nm foundry process, which is less advanced than that of 55.9% of processors and equal to that of 29% of processors.
L3 cache
8 MB
Market range: <2 MB – >32 MB
This processor has an L3 cache of 8 MB which is smaller than that of 50.7% of processors and equal to that of 11.5% of processors.
L2 cache
1 MB
Market range: <1 MB – >16 MB
This processor has an L2 cache of 1 MB which is smaller than that of 68.3% of processors and equal to that of 17% of processors.
L1 cache
256 KB
Market range: <128 KB – >1.2k KB
This processor has an L1 cache of 256 KB which is smaller than that of 60.4% of processors and equal to that of 18.1% of processors.
Show more
DDR memory version
DDR4/LPDDR3
This processor supports DDR DDR4/LPDDR3, which is newer than that of 56.3% of processors and equal to that of 1.9% of processors.
Maximum memory speed
2,666 MHz
Market range: <1.5k MHz – >6.5k MHz
This processor supports memory speeds up to 2,666 MHz, which is lower than that of 56.7% of processors and equal to 7.9% of processors.
Max memory speed (JEDEC)
DDR4-2666 MHz
This processor supports JEDEC memory speeds up to DDR4-2666 MHz, which is lower than that of 59.8% of processors and equal to 7.8% of processors.
Max memory speed (XMP / EXPO)
N/A
Maximum memory capacity
64 GB
Market range: <32 GB – >256 GB
This processor supports up to 64 GB of memory, which is more than 27.2% of processors and equal to 26.1% of processors.
Show more
Integrated graphics
yes
This processor includes integrated graphics. 14.7% of processors offer this.
Integrated GPU model
Intel UHD Graphics 630
This processor uses the Intel UHD Graphics 630 integrated GPU, which is more advanced than that in 45.6% of processors and equal to that in 8% of processors.
Integrated GPU execution units
?
Integrated GPU base frequency
350 MHz
Market range: <300 MHz – >800 MHz
This processor has an integrated GPU clock of 350 MHz which is higher than that of 42.7% of processors and equal to that of 25.4% of processors.
Integrated media encoders/decoders
?
Show more
TDP (Thermal design power)
45 W
Market range: <15 W – >90 W
This processor has a TDP of 45 W which is lower than that of 41.9% of processors and equal to that of 10.8% of processors.
Base power (PL1)
45 W
Market range: <15 W – >90 W
This processor has a base power of 45 W which is lower than that of 41.9% of processors and equal to that of 11% of processors.
Boost power (PL2)
90 W
Market range: <25 W – >150 W
This processor has a boost power of 90 W which is higher than that of 60% of processors and equal to that of 1.9% of processors.
Tau (power duration limit)
28 seconds
Market range: <8 seconds – >28 seconds
This processor has a turbo duration of 28 seconds which is longer than that of 4.4% of processors and equal to that of 85.3% of processors.
Configurable TDP
yes
This processor supports configurable TDP. 46.4% of processors offer this.
cTDP: 35 W
Show more

Intel Core i5-8400H vs the average processor

246810TotalPlatformPerformanceArchitectureMemory & PCIeIntegrated graphicsPower & Thermal
  • 28.8% smaller die size
    This processor has a lower die size than the average processor (126 mm² vs 177 mm²). The average processor has a die size of 177 mm².
    126 mm² vs 177 mm²
  • Newer DDR support
    This processor supports a newer DDR generation than the average processor (DDR4/LPDDR3 vs DDR4).
    DDR4/LPDDR3 vs DDR4
  • More advanced microarchitecture
    This processor uses a more advanced microarchitecture than the average processor (Coffee Lake vs Kaby Lake).
    Coffee Lake vs Kaby Lake
  • 8.1% more L3 per core
    This processor has more L3 cache per core than the average processor (2 MB/core vs 1.85 MB/core). The average processor provides 1.85 MB/core of L3 cache per core.
    2 MB/core vs 1.85 MB/core
  • 28.8% smaller die size
    This processor has a lower die size than the average processor (126 mm² vs 177 mm²). The average processor has a die size of 177 mm².
    126 mm² vs 177 mm²
  • 8.1% more L3 per core
    This processor has more L3 cache per core than the average processor (2 MB/core vs 1.85 MB/core). The average processor provides 1.85 MB/core of L3 cache per core.
    2 MB/core vs 1.85 MB/core
  • More advanced microarchitecture
    This processor uses a more advanced microarchitecture than the average processor (Coffee Lake vs Kaby Lake).
    Coffee Lake vs Kaby Lake
  • Newer DDR support
    This processor supports a newer DDR generation than the average processor (DDR4/LPDDR3 vs DDR4).
    DDR4/LPDDR3 vs DDR4
  • 75.3% lower multi-core score
    This processor has a lower Geekbench 6 multi-core score than the average processor (1,286 vs 5,209). The average processor scores 5,209 in Geekbench 6 multi-core.
    1,286 vs 5,209
  • 29.9% lower review score
    Reviews score
    4.7/ 10
    ✕
    What it is
    Average grade from independent test sites, magazines and video reviewers, 1–10.
    How we count it
    Grades: Each review's own score is converted to 1–10; without one, we grade the review ourselves. Big test sites count more, short reviews half as much as full tests. A video review counts half.
    Score: The average grade is 80% of the review mark; the number of reviews is the other 20% (1 review = 5, the typical number in this category = 8, the most-reviewed model = 10).
    Enough data: With few reviews, the average grade is pulled toward the typical grade of this category. No reviews yet: 7.2 for now.
    Share: Reviews count 25% of the overall score.
    Score distribution
    â–¼
    <55-66-77-88-99-10
    â–¼ Worse than 79% of models

    4.7

    Mark 7.3 is below the typical mark 7.6 of this category, so it cannot lift the score above the technical score

    80%

    7.9

    Average grade

    20%

    5.0

    Popularity

    Grades by review (1)
    1 review, with a printed score. Reviews count 25% of the overall score.
    User ratings collected online are not part of this score.
    4.7 vs 6.7
  • 2 fewer CPU cores
    This processor has fewer CPU cores than the average processor (4 vs 6). The average processor has 6 CPU cores.
    4 vs 6
  • Narrower instruction support
    This processor 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, AMD-V).
    SSE4.1, SSE4.2, AVX2 vs MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, F16C, FMA3, AES, SHA, AMD-V
  • 34.5% lower PassMark score
    This processor has a lower PassMark benchmark score than the average processor (7,514 vs 11,469). The average processor scores 11,469 in PassMark benchmark.
    7,514 vs 11,469
  • 19.8% lower Cinebench R20 single-core score
    This processor has a lower Cinebench R20 single-core score than the average processor (393 vs 490). The average processor scores 490 in Cinebench R20 single-core.
    393 vs 490
  • 66.7% smaller L2 cache
    This processor has a lower L2 cache than the average processor (1 MB vs 3 MB). The average processor has L2 cache of 3 MB.
    1 MB vs 3 MB
  • 16.7% larger process node
    This processor 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
  • 29.9% lower review score
    Reviews score
    4.7/ 10
    ✕
    What it is
    Average grade from independent test sites, magazines and video reviewers, 1–10.
    How we count it
    Grades: Each review's own score is converted to 1–10; without one, we grade the review ourselves. Big test sites count more, short reviews half as much as full tests. A video review counts half.
    Score: The average grade is 80% of the review mark; the number of reviews is the other 20% (1 review = 5, the typical number in this category = 8, the most-reviewed model = 10).
    Enough data: With few reviews, the average grade is pulled toward the typical grade of this category. No reviews yet: 7.2 for now.
    Share: Reviews count 25% of the overall score.
    Score distribution
    â–¼
    <55-66-77-88-99-10
    â–¼ Worse than 79% of models

    4.7

    Mark 7.3 is below the typical mark 7.6 of this category, so it cannot lift the score above the technical score

    80%

    7.9

    Average grade

    20%

    5.0

    Popularity

    Grades by review (1)
    1 review, with a printed score. Reviews count 25% of the overall score.
    User ratings collected online are not part of this score.
    4.7 vs 6.7
  • 7.6% worse value for money
    Intel Core i5-8400H has worse value for money than the average processor (6.77 vs 7.3).
    6.77 vs 7.29
  • Narrower instruction support
    This processor 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, AMD-V).
    SSE4.1, SSE4.2, AVX2 vs MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, F16C, FMA3, AES, SHA, AMD-V
  • Weaker security extensions
    This processor provides less advanced security extensions than the average processor (AES-NI, NX bit, Secure Key, SGX, TXT, MPX, OS Guard, Boot Guard vs AES-NI, NX bit, Secure Key, TXT, OS Guard, Boot Guard, CET, MBEC, TME, TME-MK).
    AES-NI, NX bit, Secure Key, SGX, TXT, MPX, OS Guard, Boot Guard vs AES-NI, NX bit, Secure Key, TXT, OS Guard, Boot Guard, CET, MBEC, TME, TME-MK
  • Older CPU socket
    This processor uses an older CPU socket than the average processor (FCBGA1440 vs FP5).
    FCBGA1440 vs FP5
  • More limited crypto acceleration
    This processor offers more limited crypto acceleration than the average processor (AES vs AES, SHA).
    AES vs AES, SHA
  • 2 years older release date
    This processor has an older release date than the average processor (2018 vs 2020).
    April 2018
    2018 vs 2020
  • 75.3% lower multi-core score
    This processor has a lower Geekbench 6 multi-core score than the average processor (1,286 vs 5,209). The average processor scores 5,209 in Geekbench 6 multi-core.
    1,286 vs 5,209
  • 2 fewer CPU cores
    This processor has fewer CPU cores than the average processor (4 vs 6). The average processor has 6 CPU cores.
    4 vs 6
  • 34.5% lower PassMark score
    This processor has a lower PassMark benchmark score than the average processor (7,514 vs 11,469). The average processor scores 11,469 in PassMark benchmark.
    7,514 vs 11,469
  • 19.8% lower Cinebench R20 single-core score
    This processor has a lower Cinebench R20 single-core score than the average processor (393 vs 490). The average processor scores 490 in Cinebench R20 single-core.
    393 vs 490
  • 16.2% lower single-core score
    This processor has a lower Geekbench 6 single-core score than the average processor (1,286 vs 1,535). The average processor scores 1,535 in Geekbench 6 single-core.
    1,286 vs 1,535
  • Lower base clock
    This processor has a lower base clock than the average processor (4x2.5 GHz vs 4x3.4 GHz).
    4x2.5 GHz vs 4x3.4 GHz
  • 4.5% lower boost clock
    This processor has a lower boost clock speed than the average processor (4.2 GHz vs 4.4 GHz). The average processor reaches boost clock speed of 4.4 GHz.
    4.2 GHz vs 4.4 GHz
  • 8.3% weaker single-core performance
    This processor has a lower PassMark single-core score than the average processor (2,345 vs 2,558). The average processor scores 2,558 in PassMark single-core.
    2,345 vs 2,558
  • 66.7% smaller L2 cache
    This processor has a lower L2 cache than the average processor (1 MB vs 3 MB). The average processor has L2 cache of 3 MB.
    1 MB vs 3 MB
  • 16.7% larger process node
    This processor 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
    This processor 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
  • 33.3% smaller L1 cache
    This processor has a lower L1 cache than the average processor (256 KB vs 384 KB). The average processor has L1 cache of 384 KB.
    256 KB vs 384 KB
  • 16.7% lower memory speed
    This processor has a lower maximum memory speed than the average processor (2,666 MHz vs 3,200 MHz). The average processor supports memory speed of 3,200 MHz.
    2,666 MHz vs 3,200 MHz
  • Limited PCIe bifurcation
    This processor supports less flexible PCIe bifurcation than the average processor (x16, x8/x8, x8/x4/x4 vs x16, x8/x8, x4/x4/x4/x4).
    x16, x8/x8, x8/x4/x4 vs x16, x8/x8, x4/x4/x4/x4
  • Lower JEDEC memory speed
    This processor has a lower JEDEC memory speed than the average processor (DDR4-2666 MHz vs DDR4-3200 MHz). The average processor supports JEDEC memory speed of DDR4-3200 MHz.
    DDR4-2,666 MHz vs DDR4-3,200 MHz
  • 40.6% higher boost power
    This processor has a higher boost power draw than the average processor (90 W vs 64 W). The average processor has a boost power draw of 64 W.
    90 W vs 64 W

Expert reviews

In-depth analysis and verdict from leading tech publications

9.0
notebooks-und-mobiles.de
✓ explicit
24/07/2018
Lab test · Laptop processor
Verdict
The Intel Core i5-8400H is a solid four-core laptop chip for 15-inch and larger notebooks, but it runs louder and hotter than low-power chips.

Third-party reviews

What customers like about Intel Core i5-8400H

  • Strong multi-threaded performance for its generation due to 4 cores and 8 threads with Hyper-Threading.
  • Excellent value for mid-range gaming when paired with a capable dedicated GPU.
  • Handles daily productivity tasks and moderate multitasking smoothly.
  • Solid single-core boost speeds up to 4.2GHz, beneficial for older or lightly-threaded applications.
  • Power efficient for its performance class, though typically found in larger 'H-series' laptops.

What customers don't like about Intel Core i5-8400H

  • High TDP (45W) requires robust cooling systems, often leading to loud fan noise in some laptop models.
  • Integrated UHD Graphics 630 is insufficient for modern AAA gaming at high settings.
  • Locked multiplier prevents any manual overclocking to gain extra performance.
  • Performance is significantly outclassed by newer 6-core (e.g., i7-8750H) or modern 12th/13th Gen architectures.
  • Can act as a bottleneck for high-refresh-rate gaming in the most demanding titles.

Verdict

The Intel Core i5-8400H is a high-end mobile processor based on the Coffee Lake architecture, featuring 4 cores and 8 threads with a base frequency of 2.5 GHz and a max turbo frequency of 4.2 GHz. Manufactured on an improved 14nm++ process, it includes 8 MB of Intel Smart Cache, a 45W TDP, and integrated Intel UHD Graphics 630. Main pros include strong single-core performance suitable for demanding applications and gaming, as well as Hyper-Threading support which provides a significant multi-threaded advantage over its quad-core predecessors. However, its high power consumption necessitates robust cooling solutions, and it is outperformed by contemporary six-core Coffee Lake models in heavily parallelized tasks.

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