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Intel Core i5 8257U Review | 78 Data compared

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  • Avg. price: ~£190
  • PassMark benchmark result: 7408
  • N. of physical cores: 4
  • CPU boost clock speed: 3.9 GHz

Intel Core i5 8257U review. Compare 78 technical specifications and user reviews to see how it ranks among processors and if it is worth buying.

4.0

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%

4.0

Technical Score

10.0%

?

User score

Poor
4.0

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%

3.2

Performance

18.0%

4.8

Cache & Architecture

10.0%

4.3

Memory & PCIe

7.0%

6.1

Power & Thermal

4.0%

7.4

Platform

1.0%

7.7

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

  • 3.2
    Gaming

    Score components:

    30.0%

    3.5

    PassMark single-core benchmark score

    25.0%

    3.4

    Geekbench 6 single-core benchmark score

    20.0%

    4.3

    CPU boost clock speed

    17.0%

    1.8

    L3 cache

    8.0%

    1.8

    N. of physical cores

  • 2.3
    Video editing

    Score components:

    45.0%

    2.4

    Geekbench 6 multi-core benchmark score

    20.0%

    1.8

    N. of physical cores

    20.0%

    2.8

    CPU threads

    15.0%

    1.8

    L3 cache

  • No image
No image

Best prices in UK

    N/A~ £190

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 i5-8257U is a quad-core, 8-thread mobile processor from the Coffee Lake-U Refresh generation, featuring a 14nm++ manufacturing process and a 15W TDP. It operates at a base clock of 1.4 GHz with a Max Turbo frequency of 3.9 GHz and includes 6 MB of Intel Smart Cache. Main pros include its relatively high turbo clock for strong single-core performance, the integration of Intel Iris Plus Graphics 645 with 128 MB of eDRAM for improved entry-level graphical tasks, and support for 4K video output at 60Hz. However, its low 1.4 GHz base frequency can lead to throttled sustained performance under heavy multi-core loads, and as an older 8th-generation chip, it lacks support for modern standards like PCIe 4.0 or the latest AV1 video codecs.

Technical Specifications of processor Intel Core i5 8257U

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

4.0
Intel Core i5 8257U has a technical score of 3.98 points, which is lower than that of 81.7% 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 8257U 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%

4.0

Overall score

40.0%

9.5

Price

5.6
Intel Core i5 8257U has a quality-to-price ratio of 5.6 points, which is lower than 82.6% 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 8257U 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

FCBGA1528
Intel Core i5 8257U uses the FCBGA1528 CPU socket, which is older than that of 76.7% of processors and equal to that of 1.7% 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

N/A
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 8257U 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.
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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+

4
Intel Core i5 8257U has 4 CPU cores, which is fewer than 50.7% of processors and equal to 28.5% 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+

8
Intel Core i5 8257U offers 8 CPU threads, which is more than 35.3% of processors and equal to 19% 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

2
Intel Core i5 8257U offers 2 threads per core, which is more than 30.4% of processors and equal to 69.6% 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

3.9 GHz
Intel Core i5 8257U reaches a boost clock of 3.9 GHz which is lower than that of 65% of processors and equal to that of 3.5% 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

4 x 1.4 GHz
Intel Core i5 8257U has a base clock of 4x1.4 GHz which is equal to that of 100% of processors.
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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 8257U 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 8257U 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

6 MB
Intel Core i5 8257U has an L3 cache of 6 MB which is smaller than that of 60.4% of processors and equal to that of 9.7% 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 MB
Intel Core i5 8257U has an L2 cache of 1 MB which is smaller than that of 67.1% of processors and equal to that of 17.6% 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

256 KB
Intel Core i5 8257U has an L1 cache of 256 KB which is smaller than that of 59.4% of processors and equal to that of 18.5% of processors.
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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 8257U 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

2,400 MHz
Intel Core i5 8257U supports memory speeds up to 2400 MHz, which is lower than that of 63.2% of processors and equal to 12.4% 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

DDR4-2400 MHz
Intel Core i5 8257U supports JEDEC memory speeds up to DDR4-2400 MHz, which is lower than that of 63.4% of processors and equal to 10.6% 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

N/A
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

32 GB
Intel Core i5 8257U supports up to 32 GB of memory, which is less than 71.9% of processors and equal to 19.5% of processors.
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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 8257U includes integrated graphics. 87.6% of processors include integrated graphics.
Intel Iris Plus Graphics 645
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 Iris Plus Graphics 645
Intel Core i5 8257U uses the Intel Iris Plus Graphics 645 integrated GPU, which is more advanced than that in 65.6% of processors and equal to that in 0.1% 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

48
Intel Core i5 8257U has 48 GPU execution units, which is more than 82.5% of processors and equal to 4.7% 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

300 MHz
Intel Core i5 8257U has an integrated GPU clock of 300 MHz which is lower than that of 57% of processors and equal to that of 38.7% 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/encode), VP8 (HW decode/encode), JPEG (HW decode)
Intel Core i5 8257U supports H.264 (HW decode/encode), H.265 (HW decode/encode), VP9 (HW decode/encode), VP8 (HW decode/encode), JPEG (HW decode) media codecs, which is broader support than 80.7% of processors and equal to 0.1% of processors.
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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

15 W
Intel Core i5 8257U has a TDP of 15 W which is lower than that of 77.7% 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

15 W
Intel Core i5 8257U has a base power of 15 W which is lower than that of 77.2% of processors and equal to that of 16.2% 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

44 W
Intel Core i5 8257U has a boost power of 44 W which is lower than that of 71.5% of processors and equal to that of 0.6% 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

28 seconds
Intel Core i5 8257U 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 8257U does not support configurable TDP. 52.9% of processors support configurable TDP.
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Intel Core i5 8257U vs the average processor

  • 2.53x faster classroom rendering
    Intel Core i5 8257U has a lower Blender Classroom render time than the average processor (1,999.3 vs 791.745). The average processor needs 791.745 for the Blender Classroom test.
    What it is: A Blender render result based on the Classroom scene, used to show how quickly the processor can complete a demanding rendering workload.
    When it matters: When rendering speed matters for 3D work, content creation, or other workloads that behave like long multi-core renders.

    Importance: HIGH

    Good value: >1500

    Intel Core i5 8257U has a lower Blender Classroom render time than the average processor (1,999.3 vs 791.745). The average processor needs 791.745 for the Blender Classroom test.1,999.28 vs 791.745
  • 66.7% lower base power
    Intel Core i5 8257U has a lower base power draw than the average processor (15 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 8257U has a lower base power draw than the average processor (15 W vs 45 W). The average processor has a base power draw of 45 W.15 W vs 45 W
  • 90.7% faster Blender rendering
    Intel Core i5 8257U has a lower Blender BMW27 render time than the average processor (633 vs 331.88). The average processor needs 331.88 for the Blender BMW27 test.
    What it is: A Blender render result based on the BMW27 scene, used to show how quickly the processor can finish a heavy 3D rendering task.
    When it matters: When rendering speed matters for 3D work, content creation, or other workloads that behave like long multi-core renders.

    Importance: HIGH

    Good value: >290

    Intel Core i5 8257U has a lower Blender BMW27 render time than the average processor (633 vs 331.88). The average processor needs 331.88 for the Blender BMW27 test.633 vs 331.88
  • 66.7% lower TDP
    Intel Core i5 8257U has a lower TDP than the average processor (15 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 8257U has a lower TDP than the average processor (15 W vs 45 W). The average processor has a TDP of 45 W.15 W vs 45 W
  • 31.3% lower boost power
    Intel Core i5 8257U has a lower boost power draw than the average processor (44 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 8257U has a lower boost power draw than the average processor (44 W vs 64 W). The average processor has a boost power draw of 64 W.44 W vs 64 W
  • Newer DDR support
    Intel Core i5 8257U 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 8257U supports a newer DDR generation than the average processor (DDR4/LPDDR3 vs DDR4).DDR4/LPDDR3 vs DDR4
  • 2x more GPU execution units
    Intel Core i5 8257U has more GPU execution units than the average processor (48 vs 24). The average processor has 24 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

    Intel Core i5 8257U has more GPU execution units than the average processor (48 vs 24). The average processor has 24 GPU execution units.48 vs 24
  • 2.53x faster classroom rendering
    Intel Core i5 8257U has a lower Blender Classroom render time than the average processor (1,999.3 vs 791.745). The average processor needs 791.745 for the Blender Classroom test.
  • 90.7% faster Blender rendering
    Intel Core i5 8257U has a lower Blender BMW27 render time than the average processor (633 vs 331.88). The average processor needs 331.88 for the Blender BMW27 test.
  • Newer DDR support
    Intel Core i5 8257U supports a newer DDR generation than the average processor (DDR4/LPDDR3 vs DDR4).
  • 2x more GPU execution units
    Intel Core i5 8257U has more GPU execution units than the average processor (48 vs 24). The average processor has 24 GPU execution units.
  • 66.7% lower base power
    Intel Core i5 8257U has a lower base power draw than the average processor (15 W vs 45 W). The average processor has a base power draw of 45 W.
  • 66.7% lower TDP
    Intel Core i5 8257U has a lower TDP than the average processor (15 W vs 45 W). The average processor has a TDP of 45 W.
  • 31.3% lower boost power
    Intel Core i5 8257U has a lower boost power draw than the average processor (44 W vs 64 W). The average processor has a boost power draw of 64 W.

Total
Performance
Memory & PCIe
Integrated Graphics
Power & Thermal
  • No crypto acceleration
    Intel Core i5 8257U does not include crypto acceleration, the average processor does.
  • Older CPU socket
    Intel Core i5 8257U uses an older CPU socket than the average processor (FCBGA1,528 vs FP2).
  • 45.4% weaker multi-core performance
    Intel Core i5 8257U has a lower multi-core performance than the average processor (1,520 vs 2,783). The average processor scores 2,783 in Cinebench R20 multi-core.
  • 2 fewer CPU cores
    Intel Core i5 8257U has fewer CPU cores than the average processor (4 vs 6). The average processor has 6 CPU cores.
  • 18.8% lower Cinebench R20 single-core score
    Intel Core i5 8257U has a lower Cinebench R20 single-core score than the average processor (393 vs 484). The average processor scores 484 in Cinebench R20 single-core.
  • 9.3% lower boost clock
    Intel Core i5 8257U has a lower boost clock speed than the average processor (3.9 GHz vs 4.3 GHz). The average processor reaches boost clock speed of 4.3 GHz.
  • 17.4% lower single-core score
    Intel Core i5 8257U has a lower Geekbench 6 single-core score than the average processor (1,215 vs 1,471). The average processor scores 1,471 in Geekbench 6 single-core.
  • 9.8% weaker single-core performance
    Intel Core i5 8257U has a lower PassMark single-core score than the average processor (2,240 vs 2,483). The average processor scores 2,483 in PassMark single-core.
  • 50% lower bus transfer rate
    Intel Core i5 8257U has a lower bus transfer rate than the average processor (4 GT/s vs 8 GT/s). The average processor offers bus transfer rate of 8 GT/s.
  • 50% lower bus speed
    Intel Core i5 8257U has a lower bus speed than the average processor (4 GT/s vs 8 GT/s). The average processor runs at bus speed of 8 GT/s.
  • 29.7% lower PassMark score
    Intel Core i5 8257U has a lower PassMark benchmark score than the average processor (7,408 vs 10,532.5). The average processor scores 10,532.5 in PassMark benchmark.
  • 14 lower clock multiplier
    Intel Core i5 8257U has a lower clock multiplier than the average processor (14 vs 28). The average processor has a clock multiplier of 28.
  • 15.9% lower multi-core score
    Intel Core i5 8257U has a lower Geekbench 6 multi-core score than the average processor (4,030 vs 4,793). The average processor scores 4,793 in Geekbench 6 multi-core.
  • 16.7% larger process node
    Intel Core i5 8257U has a higher process node than the average processor (14 nm vs 12 nm). The average processor uses a process node of 12 nm.
  • 60% smaller L2 cache
    Intel Core i5 8257U has a lower L2 cache than the average processor (1 MB vs 2.5 MB). The average processor has L2 cache of 2.5 MB.
  • 50% less L2 per core
    Intel Core i5 8257U 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 8257U 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.
  • 33.3% smaller L1 cache
    Intel Core i5 8257U has a lower L1 cache than the average processor (256 KB vs 384 KB). The average processor has L1 cache of 384 KB.
  • 25% smaller L3 cache
    Intel Core i5 8257U has a lower L3 cache than the average processor (6 MB vs 8 MB). The average processor has L3 cache of 8 MB.
  • 18.1% lower memory bandwidth
    Intel Core i5 8257U has a lower memory bandwidth than the average processor (37.5 GB/s vs 45.8 GB/s). The average processor offers memory bandwidth of 45.8 GB/s.
  • 50% less memory capacity
    Intel Core i5 8257U has fewer maximum memory capacity than the average processor (32 GB vs 64 GB). The average processor supports 64 GB of memory.
  • 18.2% lower memory speed
    Intel Core i5 8257U has a lower maximum memory speed than the average processor (2,400 MHz vs 2,933 MHz). The average processor supports memory speed of 2,933 MHz.
  • Limited PCIe bifurcation
    Intel Core i5 8257U supports less flexible PCIe bifurcation than the average processor (x4, x2/x2, x2/x1/x1, x1/x1/x1/x1 vs x16, x8/x8).
  • No configurable TDP
    Intel Core i5 8257U does not support configurable TDP, the average processor does.
  • 45.4% weaker multi-core performance
    Intel Core i5 8257U has a lower multi-core performance than the average processor (1,520 vs 2,783). The average processor scores 2,783 in Cinebench R20 multi-core.
    What it is: A Cinebench R20 score that reflects how well the processor handles long, heavy rendering workloads across many cores.
    When it matters: When you care about sustained multi-core performance in rendering, compiling, heavy creation work, or productivity workloads that use many threads.

    Importance: HIGH

    Good value: >4700

    Intel Core i5 8257U has a lower multi-core performance than the average processor (1,520 vs 2,783). The average processor scores 2,783 in Cinebench R20 multi-core.1,520 vs 2,783
  • 2 fewer CPU cores
    Intel Core i5 8257U has fewer CPU cores than the average processor (4 vs 6). The average processor has 6 CPU 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+

    Intel Core i5 8257U has fewer CPU cores than the average processor (4 vs 6). The average processor has 6 CPU cores.4 vs 6
  • 18.8% lower Cinebench R20 single-core score
    Intel Core i5 8257U has a lower Cinebench R20 single-core score than the average processor (393 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 8257U has a lower Cinebench R20 single-core score than the average processor (393 vs 484). The average processor scores 484 in Cinebench R20 single-core.393 vs 484
  • 9.3% lower boost clock
    Intel Core i5 8257U has a lower boost clock speed than the average processor (3.9 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 8257U has a lower boost clock speed than the average processor (3.9 GHz vs 4.3 GHz). The average processor reaches boost clock speed of 4.3 GHz.3.9 GHz vs 4.3 GHz
  • 16.7% larger process node
    Intel Core i5 8257U 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 8257U 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
  • 17.4% lower single-core score
    Intel Core i5 8257U has a lower Geekbench 6 single-core score than the average processor (1,215 vs 1,471). The average processor scores 1,471 in Geekbench 6 single-core.
    What it is: A Geekbench 6 score that reflects single-core CPU performance in mixed modern workloads.
    When it matters: When you care about snappy everyday performance in lighter apps, browsing, office work, or tasks that do not scale well across many cores.

    Importance: HIGH

    Good value: >2000

    Intel Core i5 8257U has a lower Geekbench 6 single-core score than the average processor (1,215 vs 1,471). The average processor scores 1,471 in Geekbench 6 single-core.1,215 vs 1,471
  • 50% less L2 per core
    Intel Core i5 8257U 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 8257U 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
  • 60% smaller L2 cache
    Intel Core i5 8257U has a lower L2 cache than the average processor (1 MB vs 2.5 MB). The average processor has L2 cache of 2.5 MB.
    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

    Intel Core i5 8257U has a lower L2 cache than the average processor (1 MB vs 2.5 MB). The average processor has L2 cache of 2.5 MB.1 MB vs 2.5 MB
Total
Overall
Platform
Performance
Cache & Architecture
Memory & PCIe
Power & Thermal

Graphic comparison of Intel Core i5 8257U and other processors

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Third-party reviews

What customers like about Intel Core i5 8257U?

  • Significantly improved multi-core performance compared to previous dual-core U-series processors
  • High Turbo Boost clock (up to 3.9 GHz) provides strong short-burst and single-threaded performance
  • Efficient 15W TDP is well-suited for thin-and-light laptops and ultrabooks
  • Integrated Iris Plus Graphics 645 offers decent performance for light gaming and casual video editing
  • Solid value for everyday productivity tasks, web browsing, and student use

What customers dislike about Intel Core i5 8257U?

  • Performance is often limited by TDP and cooling solutions in sustained workloads
  • Considered an older architecture that is no longer competitive with modern 10nm or 7nm processors
  • Base clock speed is relatively low (1.4 GHz), making it less ideal for heavy, long-term CPU loads
  • Integrated graphics lack dedicated video memory, making performance highly dependent on fast system RAM
  • Struggles with demanding modern AAA gaming titles and high-resolution (4K) video editing

Expert reviews

C
cpubenchmark.net
10/07/2019
Intel Core i5-8257U @ 1.40GHz - PassMark CPU Benchmarks

The Intel Core i5-8257U is a 15W Coffee Lake-U quad-core processor designed for thin, portable laptops like the 2019 MacBook Pro 13, utilizing Hyper-Threading for efficient multitasking. Featuring integrated Intel Iris Plus Graphics 645 with 128 MB of eDRAM, the chip provides capable performance for daily productivity and light graphical tasks. While efficient, the processor's age...Read more

B
browser.geekbench.com
10/07/2019
MacBook Pro (13-inch Mid 2019) Benchmarks - Geekbench

The Mid-2019 13-inch MacBook Pro features 8th-generation quad-core processors, the T2 security chip, and True Tone display technology, representing a significant performance jump over its predecessors. With Geekbench 6 scores around 1,155 single-core and 3,937 multi-core, it handles daily tasks and light video editing effectively. Pros include exceptional build quality, the Force...Read more

Z
zoneoftech.com
16/08/2019
2019 13" MacBook Pro (Baseline) Review - Intel i5-8257U Performance

The 2019 baseline 13-inch MacBook Pro acts as a significant upgrade, offering a quad-core 1.4GHz Intel i5 processor, Touch Bar, and Touch ID at a $1,299 price point, delivering performance nearly twice as fast as the 2017 model. Key pros include this enhanced processing power and a True Tone display, while cons involve having only two Thunderbolt 3 ports and significantly slower...Read more

M
macrumors.com
11/07/2019
Base 2019 13-Inch MacBook Pro is Up to 83% Faster Than Previous Generation

The 2019 entry-level 13-inch MacBook Pro features a 1.4GHz quad-core 8th-generation Intel Core i5 processor, delivering a significant 83% increase in multi-core performance compared to its dual-core 2017 predecessor. This performance jump enables better handling of intensive tasks like video editing, while single-core scores also saw a moderate improvement. Key upgrades for this...Read more

B
browser.geekbench.com
01/07/2020
Intel Core i5-8257U Benchmarks - Geekbench Browser

The Intel Core i5-8257U is a 14-nanometer Coffee Lake, quad-core mobile processor designed for thin-and-light devices, notably the 13-inch MacBook Pro, featuring 8 threads and a 15W TDP. It operates at a 1.40 GHz base, scaling to 3.90 GHz via Turbo Boost to handle mixed workloads. Pros include strong burst performance and integrated Intel Iris Plus Graphics 645 with 128 MB of eDRAM,...Read more

N
notebooks-und-mobiles.de
30/10/2019
Coffee Lake - Intel Core i5-8257U Review

Tested in the 2019 MacBook Pro 13, the Intel Core i5-8257U (Coffee Lake-U) provides a substantial quad-core upgrade over previous dual-core models, offering strong burst speeds, 14nm++ efficiency, and a 1.4 GHz base clock. The processor delivers high single-core responsiveness but is constrained by a 15-watt TDP, causing performance throttling during sustained, intensive workloads....Read more

(Translated)Show original
M
macwelt.de
12/05/2020
MacBook Pro 13" Review: Modest CPU, Great Graphics

The 2020 13-inch MacBook Pro features a significant performance disparity, with high-end models offering superior 10th-generation Intel graphics, while entry-level units rely on older 8th-generation chips. Key improvements include the reliable Magic Keyboard, a high-quality Retina display, and faster base RAM/storage configurations. However, the machine suffers from high thermal...Read more

(Translated)Show original
H
heise.de
30/08/2019
Head to Head: MacBook Air vs. MacBook Pro 13"", "Review: MacBook Air vs. MacBook Pro 13"", "MacBook Air vs. MacBook Pro 13" Comparison

The Heise review compares the M1 MacBook Air and MacBook Pro 13-inch, noting that both share nearly identical everyday performance due to the M1 chip's unified memory architecture. The MacBook Air's key advantage is its silent, fanless design, though it experiences thermal throttling during prolonged, heavy workloads. In contrast, the MacBook Pro's active fan allows for sustained...Read more

(Translated)Show original
M
macwelt.de
17/07/2019
MacBook Pro 13-inch (Summer 2019) Review

The Summer 2019 update for the 13-inch MacBook Pro, as tested by Macwelt, significantly upgraded the entry-level model by standardizing the Touch Bar, Touch ID, and the Apple T2 security chip across the lineup. This revision boosted performance with standard quad-core Intel processors, complemented by the Retina display featuring True Tone technology, a superior Force Touch...Read more

(Translated)Show original
N
notebooks-und-mobiles.de
04/11/2019
Apple 13.3" MacBook Pro 2019 (i5-8257U) Review

The 2019 Apple MacBook Pro 13-inch (i5-8257U) is a significant entry-level upgrade, featuring a quad-core processor, Touch Bar, True Tone display, and T2 chip as standard. Pros include high performance for its class, a 500-nit Retina display, premium build quality, and excellent trackpad and keyboard (despite the polarizing butterfly mechanism). Cons involve a high price, stingy...Read more

(Translated)Show original
0
01net.com
26/07/2019
Review: MacBook Pro 13″ 2019—Apple's true entry-level laptop

The 2019 13-inch MacBook Pro (1.4 GHz Core i5, 8GB RAM) acts as an entry-level professional device featuring a Retina display with True Tone, the Touch Bar, and the Apple T2 security chip. Its compact, lightweight design pairs with a quad-core processor suitable for tasks like photo editing, alongside high-speed SSD storage. Significant drawbacks include the limited connectivity,...Read more

(Translated)Show original
N
notebookcheck.biz
16/02/2020
Apple MacBook Pro 13 2019 (i5-8257U, Iris Plus 645, FHD+) Review: Entry-level Pro with Touch Bar

The 2019 entry-level Apple MacBook Pro 13 (i5-8257U/Iris Plus 645) brings quad-core performance and Touch Bar functionality to the base lineup, delivering up to 80% faster multi-core speeds than its predecessor. The device features a high-quality 13.3-inch Retina display with 500 nits brightness and True Tone technology, alongside a reliable 58.2 Wh battery. Key pros include the...Read more

(Translated)Show original
M
marchdotnet.wordpress.com
01/06/2022
Twinmotion – Hardware Comparison

This MarchDotNet review of Twinmotion 2022.2 highlights the shift toward demanding hardware, requiring DirectX 12 GPUs with at least 8GB of VRAM for the Path Tracer engine. A major pro is the near-photorealistic output, while a notable con at the time was the lack of Path Tracer support for macOS. The analysis identifies an NVIDIA RTX 3070 or better as the ideal "sweet spot" for...Read more

(Translated)Show original
R
riccardo.im
02/10/2019
Apple MacBook Pro 13 2019 Review

The 2019 Apple MacBook Pro 13, reviewed by Riccardo.im, marks a significant upgrade over its predecessor by introducing quad-core processors, the T2 security chip, and the Touch Bar to the entry-level model. The device features a high-quality Retina display with True Tone technology and DCI-P3 color support, while the updated keyboard design aimed to improve reliability. Despite...Read more

(Translated)Show original
S
smartworld.it
22/01/2020
2019 13-inch MacBook Pro Review

The 2019 13-inch MacBook Pro features a quad-core 8th-gen Intel processor and standardizes the Touch Bar and Touch ID across the lineup, offering significant performance gains for the base-level professional, according to reviews. Key pros include a bright 500-nit Retina display with True Tone, excellent build quality, and the security of the Apple T2 chip, complemented by the...Read more

(Translated)Show original
S
saggiamente.com
13/07/2019
13" MacBook Pro 2019 Base Model: Call It a Best Buy and Stop Comparing It to the Air

The 2019 entry-level MacBook Pro 13-inch is highlighted as a "best buy," offering superior performance over the MacBook Air due to its quad-core 1.4GHz processor, making it suitable for professional creative tasks, complemented by the inclusion of the Touch Bar and Touch ID. Key advantages include a brighter 500-nit Retina display with P3 wide color gamut support, better cooling for...Read more

(Translated)Show original
L
laptopmedia.com
Unknown Date
Intel Core i5-8257U - Specs, Benchmark Tests, and Comparisons

The Intel Core i5-8257U is a Coffee Lake-based quad-core processor tailored for thin, high-performance laptops like the MacBook Pro 13, featuring 4 cores, 8 threads, and a 1.4 GHz base clock. It is distinguished by its integrated Intel Iris Plus Graphics 645, which includes 128MB of eDRAM to deliver superior graphical performance over standard UHD solutions. Key strengths include...Read more

(Translated)Show original
N
notebookcheck.nl
05/02/2020
Apple MacBook Pro 13 2019 Laptop Review

The 2019 entry-level 13-inch MacBook Pro features a significant performance boost over its predecessor, utilizing a quad-core Intel Core i5-8257U processor and standardizing the Touch Bar with Touch ID, according to NotebookCheck. The laptop maintains premium build quality with a top-tier aluminum chassis, high-brightness 500-nit Retina display with True Tone, and long battery life...Read more

(Translated)Show original
N
notebookcheck.nl
14/04/2020
Apple MacBook Air 2020 i5 (Comparison test with i5-8257U)

The Notebookcheck review of the 2020 Intel Core i5 MacBook Air praises the return of the comfortable scissor-switch "Magic Keyboard," alongside a rigid aluminum design, Retina display, and increased base storage. While the i5 processor offers decent performance for daily tasks, the review notes significant thermal throttling due to a passive cooling design that fails to connect the...Read more

(Translated)Show original
N
notebookcheck.nl
20/12/2020
Apple MacBook Pro 13 2020 Laptop Review

The 2020 Apple MacBook Pro 13 with M1 chip delivers exceptional performance and sustained speeds due to its active cooling system, outperforming the previous Intel model and the fanless MacBook Air. Pros include the high-performing M1 chip, a bright 500-nit P3 Retina display, and industry-leading battery life exceeding 20 hours. However, the design remains dated with thick bezels,...Read more

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