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Intel Core i7 8665U Review | 78 Data compared

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  • Avg. price in UK: ~£400
  • Avg. price in US: ~$410
  • PassMark benchmark result: 6177
  • N. of physical cores: 4
  • CPU boost clock speed: 4.8 GHz

Intel Core i7 8665U review. Compare 78 technical specifications and user reviews to see how it ranks among processors and if it is worth buying.

4.5

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%

4.5

Technical Score

10.0%

?

User score

Poor
4.5

Technical Score

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

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

Score components:

60.0%

3.8

Performance

18.0%

4.9

Cache & Architecture

10.0%

4.5

Memory & PCIe

7.0%

7.6

Power & Thermal

4.0%

7.6

Platform

1.0%

6.8

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

  • 5.2
    Gaming

    Score components:

    30.0%

    3.4

    PassMark single-core benchmark score

    25.0%

    9.0

    Geekbench 6 single-core benchmark score

    20.0%

    7.0

    CPU boost clock speed

    17.0%

    2.1

    L3 cache

    8.0%

    1.8

    N. of physical cores

  • 2.1
    Video editing

    Score components:

    45.0%

    1.9

    Geekbench 6 multi-core benchmark score

    20.0%

    1.8

    N. of physical cores

    20.0%

    2.8

    CPU threads

    15.0%

    2.1

    L3 cache

  • No image
No image

Best prices in UK

    N/A~ £400

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 i7-8665U is a power-efficient quad-core mobile processor from the 8th Gen Whiskey Lake family, featuring 8 threads via Hyper-Threading, a base clock of 1.90 GHz, and a high turbo frequency of up to 4.80 GHz. Built on an improved 14nm++ process with an 8MB Smart Cache and a 15W TDP, it includes integrated Intel UHD Graphics 620 and supports up to 64GB of DDR4-2400 or LPDDR3-2133 memory. Its main pros include enterprise-ready vPro technology, strong single-core burst performance for productivity, and excellent energy efficiency for ultrabooks. However, its primary cons are its reliance on an aging architecture that lacks modern integrated graphics power and the tendency for sustained performance to drop significantly under heavy, long-term workloads due to thermal and TDP limitations.

Technical Specifications of processor Intel Core i7 8665U

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

4.5
Intel Core i7 8665U has a technical score of 4.53 points, which is lower than that of 65.3% 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 i7 8665U 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%

4.5

Overall score

40.0%

8.4

Price

5.7
Intel Core i7 8665U has a quality-to-price ratio of 5.7 points, which is lower than 78% 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 i7 8665U 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 i7 8665U 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 i7 8665U 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 i7 8665U 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 i7 8665U 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 i7 8665U 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

4.8 GHz
Intel Core i7 8665U reaches a boost clock of 4.8 GHz which is higher than that of 71.2% of processors and equal to that of 4.3% 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 1.9 GHz
Intel Core i7 8665U has a base clock of 4x1.9 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 i7 8665U 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 i7 8665U 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

8 MB
Intel Core i7 8665U has an L3 cache of 8 MB which is larger than that of 39.7% of processors and equal to that of 11.8% 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 i7 8665U 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 i7 8665U 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 i7 8665U 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 i7 8665U 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 i7 8665U 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

64 GB
Intel Core i7 8665U supports up to 64 GB of memory, which is more than 28.4% of processors and equal to 27.6% 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 i7 8665U 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 620
Intel Core i7 8665U uses the Intel UHD Graphics 620 integrated GPU, which is less advanced than that in 55.8% of processors and equal to that in 1.2% 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 i7 8665U 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

300 MHz
Intel Core i7 8665U 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), VP9 (HW decode/encode), VP8 (HW decode/encode), MPEG-2 (HW decode), VC-1 (HW decode)
Intel Core i7 8665U supports H.264 (HW decode/encode), VP9 (HW decode/encode), VP8 (HW decode/encode), MPEG-2 (HW decode), VC-1 (HW decode) media codecs, which is broader support than 68.9% 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 i7 8665U 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 i7 8665U 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

25 W
Intel Core i7 8665U has a boost power of 25 W which is lower than that of 83.1% of processors and equal to that of 9.2% 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 i7 8665U 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

yes
Intel Core i7 8665U supports configurable TDP. 52.9% of processors support configurable TDP.
cTDP: 25 W
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Intel Core i7 8665U vs the average processor

  • 11.6% higher boost clock
    Intel Core i7 8665U has a higher boost clock speed than the average processor (4.8 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 i7 8665U has a higher boost clock speed than the average processor (4.8 GHz vs 4.3 GHz). The average processor reaches boost clock speed of 4.3 GHz.4.8 GHz vs 4.3 GHz
  • 66.7% lower base power
    Intel Core i7 8665U 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 i7 8665U 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
  • 60.9% lower boost power
    Intel Core i7 8665U has a lower boost power draw than the average processor (25 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 i7 8665U has a lower boost power draw than the average processor (25 W vs 64 W). The average processor has a boost power draw of 64 W.25 W vs 64 W
  • 66.7% lower TDP
    Intel Core i7 8665U 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 i7 8665U 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
  • Newer DDR support
    Intel Core i7 8665U 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 i7 8665U supports a newer DDR generation than the average processor (DDR4/LPDDR3 vs DDR4).DDR4/LPDDR3 vs DDR4
  • 16.7% more L3 per core
    Intel Core i7 8665U has more L3 cache per core than the average processor (2 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 i7 8665U has more L3 cache per core than the average processor (2 MB/core vs 1.714 MB/core). The average processor provides 1.714 MB/core of L3 cache per core.2 MB/core vs 1.714 MB/core
  • 11.6% higher boost clock
    Intel Core i7 8665U has a higher boost clock speed than the average processor (4.8 GHz vs 4.3 GHz). The average processor reaches boost clock speed of 4.3 GHz.
  • 16.7% more L3 per core
    Intel Core i7 8665U has more L3 cache per core than the average processor (2 MB/core vs 1.714 MB/core). The average processor provides 1.714 MB/core of L3 cache per core.
  • Newer DDR support
    Intel Core i7 8665U supports a newer DDR generation than the average processor (DDR4/LPDDR3 vs DDR4).
  • 66.7% lower base power
    Intel Core i7 8665U 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.
  • 60.9% lower boost power
    Intel Core i7 8665U has a lower boost power draw than the average processor (25 W vs 64 W). The average processor has a boost power draw of 64 W.
  • 66.7% lower TDP
    Intel Core i7 8665U has a lower TDP than the average processor (15 W vs 45 W). The average processor has a TDP of 45 W.

Total
Performance
Cache & Architecture
Memory & PCIe
Power & Thermal
  • No crypto acceleration
    Intel Core i7 8665U does not include crypto acceleration, the average processor does.
  • Narrower instruction support
    Intel Core i7 8665U supports a narrower instruction set than the average processor (MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, F16C, FMA3, AES vs MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, F16C, FMA3, AES, SHA).
  • Older CPU socket
    Intel Core i7 8665U uses an older CPU socket than the average processor (FCBGA1,528 vs FP2).
  • 44.8% weaker multi-core performance
    Intel Core i7 8665U has a lower multi-core performance than the average processor (1,536 vs 2,783). The average processor scores 2,783 in Cinebench R20 multi-core.
  • 2 fewer CPU cores
    Intel Core i7 8665U has fewer CPU cores than the average processor (4 vs 6). The average processor has 6 CPU cores.
  • 44.6% lower multi-core score
    Intel Core i7 8665U has a lower Geekbench 6 multi-core score than the average processor (2,655 vs 4,793). The average processor scores 4,793 in Geekbench 6 multi-core.
  • 12.9% weaker single-core performance
    Intel Core i7 8665U has a lower PassMark single-core score than the average processor (2,163 vs 2,483). The average processor scores 2,483 in PassMark single-core.
  • 41.4% lower PassMark score
    Intel Core i7 8665U has a lower PassMark benchmark score than the average processor (6,177 vs 10,532.5). The average processor scores 10,532.5 in PassMark benchmark.
  • 50% lower bus transfer rate
    Intel Core i7 8665U 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 i7 8665U 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.
  • 9 lower clock multiplier
    Intel Core i7 8665U has a lower clock multiplier than the average processor (19 vs 28). The average processor has a clock multiplier of 28.
  • 4.1% lower Cinebench R20 single-core score
    Intel Core i7 8665U has a lower Cinebench R20 single-core score than the average processor (464 vs 484). The average processor scores 484 in Cinebench R20 single-core.
  • 16.7% larger process node
    Intel Core i7 8665U 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 i7 8665U 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 i7 8665U 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.
  • 33.3% smaller L1 cache
    Intel Core i7 8665U has a lower L1 cache than the average processor (256 KB vs 384 KB). The average processor has L1 cache of 384 KB.
  • 18.1% lower memory bandwidth
    Intel Core i7 8665U 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.
  • 18.2% lower memory speed
    Intel Core i7 8665U 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 i7 8665U supports less flexible PCIe bifurcation than the average processor (x4, x2/x2, x2/x1/x1, x1/x1/x1/x1 vs x16, x8/x8).
  • 44.8% weaker multi-core performance
    Intel Core i7 8665U has a lower multi-core performance than the average processor (1,536 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 i7 8665U has a lower multi-core performance than the average processor (1,536 vs 2,783). The average processor scores 2,783 in Cinebench R20 multi-core.1,536 vs 2,783
  • 2 fewer CPU cores
    Intel Core i7 8665U 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 i7 8665U has fewer CPU cores than the average processor (4 vs 6). The average processor has 6 CPU cores.4 vs 6
  • 16.7% larger process node
    Intel Core i7 8665U 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 i7 8665U 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
  • 44.6% lower multi-core score
    Intel Core i7 8665U has a lower Geekbench 6 multi-core score than the average processor (2,655 vs 4,793). The average processor scores 4,793 in Geekbench 6 multi-core.
    What it is: A Geekbench 6 score that reflects multi-core CPU performance in mixed modern workloads.
    When it matters: When you want a quick picture of multi-core speed in everyday mixed workloads, multitasking, and broadly optimized software.

    Importance: HIGH

    Good value: >8500

    Intel Core i7 8665U has a lower Geekbench 6 multi-core score than the average processor (2,655 vs 4,793). The average processor scores 4,793 in Geekbench 6 multi-core.2,655 vs 4,793
  • 50% less L2 per core
    Intel Core i7 8665U 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 i7 8665U 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 i7 8665U 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 i7 8665U 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
  • 12.9% weaker single-core performance
    Intel Core i7 8665U has a lower PassMark single-core score than the average processor (2,163 vs 2,483). The average processor scores 2,483 in PassMark single-core.
    What it is: A benchmark score that reflects single-core CPU performance.
    When it matters: When you care about responsiveness in lighter or older software.

    Importance: HIGH

    Good value: >3200

    Intel Core i7 8665U has a lower PassMark single-core score than the average processor (2,163 vs 2,483). The average processor scores 2,483 in PassMark single-core.2,163 vs 2,483
  • 41.4% lower PassMark score
    Intel Core i7 8665U has a lower PassMark benchmark score than the average processor (6,177 vs 10,532.5). The average processor scores 10,532.5 in PassMark benchmark.
    What it is: A benchmark score that gives a broad idea of overall processor performance.
    When it matters: When you want a quick overall performance comparison.

    Importance: HIGH

    Good value: >19000

    Intel Core i7 8665U has a lower PassMark benchmark score than the average processor (6,177 vs 10,532.5). The average processor scores 10,532.5 in PassMark benchmark.6,177 vs 10,532.5
Total
Overall
Platform
Performance
Cache & Architecture
Memory & PCIe

Graphic comparison of Intel Core i7 8665U and other processors

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Third-party reviews

What customers like about Intel Core i7 8665U?

  • High turbo boost frequency (up to 4.8 GHz) allows for snappy performance in single-threaded tasks like web browsing and document editing.
  • Efficient for everyday office multitasking, handling 20+ browser tabs and standard office applications without lag.
  • Good consistency in real-world performance under varying conditions according to user benchmarks.
  • Excellent for lightweight business laptops and students due to low power consumption (15W TDP) and portability.
  • Strong support for professional features like Thunderbolt 3 and hardware virtualization (VT-x/VT-d).
  • Capable of light photo editing in applications like Lightroom for small batches of photos.

What customers dislike about Intel Core i7 8665U?

  • Prone to thermal throttling in thin ultrabooks, where clock speeds can drop significantly after just a few minutes of heavy load.
  • Integrated Intel UHD Graphics 620 is weak, struggling with modern gaming and high-resolution video editing.
  • Noticeable fan noise in many compact laptop models when the processor hits higher turbo speeds.
  • Built on an older 14nm process, making it less energy-efficient and slower compared to newer 10nm or 7nm competitors (e.g., Ryzen 5000 series or 11th Gen Intel).
  • Lacks future-proofing for intensive modern workloads like AI modeling, 3D rendering, or heavy video production.
  • Expensive for its performance level when compared to newer generations that offer more cores and better integrated graphics.

Expert reviews

C
cpubenchmark.net
Updated Daily
Intel Core i7-8665U @ 1.90GHz - CPU Benchmarks Would you like more details on a specific benchmark or comparison with a newer generation?

The Intel Core i7-8665U is a 2019 "Whiskey Lake" quad-core processor tailored for business laptops, featuring 8 threads and a 1.90 GHz base clock with a strong 4.80 GHz turbo. Pros include high single-thread performance, Intel vPro security, and excellent efficiency for daily tasks. However, the chip faces cons such as weak Intel UHD Graphics 620, significant performance lags...Read more

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techspot.com
17/10/2019
Intel Core i7-10710U Benchmarked: 14nm+++ Comet

The TechSpot review of the Intel Core i7-10710U highlights it as a significant achievement, bringing six cores and twelve threads to a 15W TDP ultraportable processor. It delivers 25% to 30% faster multi-threaded performance over the quad-core i7-8565U, allowing thin laptops to rival older 45W high-performance chips. Pros include exceptional multi-core efficiency, outperforming AMD...Read more

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laptopmedia.com
23/12/2019
Intel Core i7-1065G7 vs i7-8665U - the mighty one has fallen

LaptopMedia compares the 10th-gen Core i7-1065G7 (10nm) with the 8th-gen Core i7-8665U (14nm), finding that the newer architecture wins on efficiency and performance despite lower clock speeds. The i7-1065G7 offers significant advantages, including superior memory support (DDR4-3200/LPDDR4-3733) and roughly 14% faster CPU performance in daily tasks. Graphics performance is a major...Read more

P
pcworld.com
14/04/2020
Lenovo ThinkPad X1 Carbon 7th Gen review: The 4K display ...

The PCWorld review of the Lenovo ThinkPad X1 Carbon 7th Gen identifies it as a premier, lightweight business ultrabook with a world-class keyboard, a robust chassis, and a high-performance audio system. A major pro highlighted is the stunning 4K HDR display, which delivers vibrant, detailed visuals, alongside specialized security features like the ThinkShutter. Conversely, the...Read more

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pcworld.com
21/11/2019
Dynabook Tecra X50-F review: This lightweight 15-inch ...

The Dynabook Tecra X50-F is a 15.6-inch business notebook lauded by PCWorld for its extreme portability, weighing roughly 1.4kg in a durable, magnesium alloy chassis. While offering solid productivity performance and good connectivity, the laptop is marred by a dim 260-nit display and a "mixed bag" user experience featuring a flawed keyboard layout. Furthermore, the device suffers...Read more

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pcworld.com
09/07/2019
Dell Latitude 7400 2-in-1 review: A nearly perfect combination ...

The PCWorld review highlights the Dell Latitude 7400 2-in-1 as a premium business laptop offering exceptional battery life and high-end performance in a compact 14-inch form factor. Notable pros include an all-aluminum chassis, small footprint due to thin bezels, and the innovative ExpressSign-in proximity sensor for automatic unlocking. However, cons include a high price point,...Read more

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pcworld.com
23/01/2020
HP Elite Dragonfly review: The corporate laptop that's too ...

The HP Elite Dragonfly is a premium, ultra-lightweight (starting at 2.2 lbs) 2-in-1, featuring a distinct, durable iridescent blue magnesium body. Pros include a high-quality keyboard, a versatile port selection with full-size HDMI and USB-A, and a striking, fingerprint-resistant design. PCWorldThe laptop prioritizes endurance over performance, delivering nearly 18 hours of video...Read more

O
openbenchmarking.org
01/05/2019
Intel Core I7-8665U Benchmarks, Linux Performance

The Intel Core i7-8665U is a 2019 quad-core Whiskey Lake ultra-low power (ULV) processor, capable of reaching 4.8 GHz, and is primarily found in corporate laptops. It offers strong single-core performance for professional applications and vPro support, but is often limited by thermal constraints. While efficient, the 14nm chip is significantly outpaced by newer generations in...Read more

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laptopmedia.com
10/02/2020
Intel Core i7-10710U vs i7-8665U - no more whiskey for the latter

LaptopMedia's comparison finds the 10th Gen Intel Core i7-10710U significantly outperforms the 8th Gen i7-8665U, offering a 50% increase in core count and 64% better multi-threaded performance. Despite the older i7-8665U having higher clock speeds, the i7-10710U serves as a superior, future-proof option for multitasking, with improved heat management. The i7-10710U boasts a better...Read more

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laptopmedia.com
16/04/2019
Intel Core i7-8665U - LaptopMedia Benchmarks

The Intel Core i7-8665U is a Whiskey Lake quad-core SoC that, while formerly a ULV leader with a 4.80 GHz boost, has been largely superseded by newer 10th Gen chips, according to LaptopMedia. Pros include high single-core performance suitable for office tasks, a 15W TDP ideal for thin laptops, and vPro support, but it is hampered by an outdated UHD Graphics 620 iGPU. Cons consist of...Read more

C
cpubenchmark.net
16/04/2019
Intel i7-8665U vs i5-8265U [cpubenchmark.net] by PassMark Software Would you like me to find laptops that feature the Intel Core i7-8665U specifically...

According to PassMark benchmarks, the Intel Core i7-8665U offers a moderate performance advantage over the i5-8265U, driven by higher clock speeds (up to 4.8 GHz vs. 3.9 GHz) and a larger 8MB L3 cache. Both 8th Generation Whiskey Lake processors share the same 14nm++ manufacturing process, 15W TDP, and Intel UHD Graphics 620, placing them in similar, yet distinct, performance tiers....Read more

N
notebookinfo.de
30/04/2019
Lenovo ThinkPad X390 20Q0CTO1WWDE2 Tests & Specs

The Lenovo ThinkPad X390 (20Q0CTO1WWDE2) is a 1.22 kg, 13.3-inch business laptop featuring an Intel Core i7-8565U processor, 16GB of soldered RAM, and a 512GB SSD. It offers a durable, portable design with a 97% sRGB matte display, alongside strong security features like a physical webcam shutter and optional IR camera. While praised for its, keyboard, and port selection—including...Read more

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galaxus.de
07/02/2020
Dell OptiPlex 7070 Ultra Review: The Flexible All-in-One PC

The Galaxus review highlights the Dell OptiPlex 7070 Ultra's unique modular design, where a slim PC module fits into a monitor stand to create a "zero-footprint" AIO experience. A major pro is the toolless assembly, which, combined with USB-C power delivery, reduces cable clutter. Performance-wise, the 8th-gen Intel Core i7, 16GB RAM configuration offers solid, laptop-like...Read more

(Translated)Show original
N
notebooks-und-mobiles.de
04/10/2019
Dell Latitude 7400 2-in-1 (Convertible) Review

The Dell Latitude 7400 2-in-1 is a premium business convertible featuring a compact, durable all-aluminum chassis and the innovative ExpressSign-in proximity sensor for automatic locking and unlocking. It excels with exceptional battery life, exceeding 13–15 hours, and offers a comfortable keyboard, though its 300-nit screen is limited in bright environments. Performance is...Read more

(Translated)Show original
L
laptopmedia.com
10/02/2020
Intel Core i7-10710U vs. i7-8665U Benchmark Comparison

The Intel Core i7-10710U (Comet Lake) provides a significant performance leap over the i7-8665U (Whiskey Lake), offering 6 cores and 12 threads compared to the 4-core, 8-thread configuration of the older chip. While both maintain a 15W TDP, the i7-10710U boasts a 64% advantage in multi-threaded benchmarks and higher cache capacity, though it features a lower base clock and relies on...Read more

(Translated)Show original
N
notebookcheck.com
01/07/2023
Intel Core i7-8665U vs. Intel Core i7-8565U - Benchmarks & Tests

The Intel Core i7-8665U and i7-8565U are similar Whiskey Lake quad-core processors, with the i7-8665U offering a 200 MHz higher turbo boost (4.8 GHz) and vPro support. While the i7-8665U has a slight performance edge, both are limited by TDP and cooling constraints, often resulting in similar real-world performance. Both chips utilize the same Intel UHD Graphics 620, which is a...Read more

(Translated)Show original
L
laptopmedia.com
23/12/2019
Intel Core i7-1065G7 vs i7-8665U - The powerful one has fallen

The LaptopMedia review concludes that the 10nm Intel Core i7-1065G7 (Ice Lake) outperforms the 14nm i7-8665U (Whiskey Lake) despite lower clock speeds, marking a significant generational shift. The i7-1065G7 offers roughly 14% better CPU performance, supports faster DDR4-3200/LPDDR4-3733 memory, and boasts superior efficiency, whereas the i7-8665U shows its age through higher heat...Read more

(Translated)Show original
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labonneconfig.fr
Undated
Intel Core i7-8665U Benchmark: Score of 2,271 points

The Intel Core i7-8665U is a 15W Whiskey Lake-U processor designed for premium business laptops, offering a 1.9 GHz base clock and a 4.8 GHz boost. It is built for efficiency and supports vPro technology, making it suitable for corporate environments. While capable of handling office tasks and supporting 4K video, the 2019-released chip is hindered by a locked multiplier and cannot...Read more

(Translated)Show original
L
laptopmedia.com
Sin fecha específica (Actualizado 2026)
Intel Core i7-8665U | LaptopMedia

The Intel Core i7-8665U is a quad-core Whiskey Lake processor (14nm++) designed for premium business laptops, featuring 8 threads and a boost frequency up to 4.80 GHz. Performance is highly reliant on thermal design, with TDPs ranging from 7.5W to 25W. Pros include strong single-core performance, reliable multitasking for office tasks, and integrated UHD Graphics 620 sufficient for...Read more

(Translated)Show original
L
laptopmedia.com
23/12/2019
Intel Core i7-1065G7 vs i7-8665U: The Mighty One Has Fallen

The LaptopMedia review highlights a significant shift as the 10nm Intel Core i7-1065G7 outperforms the 14nm i7-8665U, despite the latter having higher clock speeds. The i7-1065G7 delivers 14% better CPU performance and supports faster memory (up to DDR4-3200/LPDDR4-3733), offering better efficiency in a 15W TDP. A major advantage for the i7-1065G7 is its Intel Iris Plus G7 graphics,...Read more

(Translated)Show original
L
laptopmedia.com
10/02/2020
Intel Core i7-10710U vs i7-8665U: No more Whiskey for the latter, it's 40% slower

The Intel Core i7-10710U (Comet Lake) offers a significant performance advantage over the i7-8665U (Whiskey Lake), featuring 6 cores and 12 threads compared to the latter's 4 cores and 8 threads. While the i7-8665U maintains slightly higher clock speeds, the i7-10710U boasts a larger cache, better efficiency, and superior multitasking capabilities, delivering a 64% lead in...Read more

(Translated)Show original
L
laptopmedia.com
24/07/2019
Lenovo ThinkPad T490s review | LaptopMedia

The Lenovo ThinkPad T490s combines a durable, 16.7mm, 1.35 kg chassis with high-performance 8th Gen Intel processors, resulting in a premium, portable business machine. Key pros include exceptional battery life exceeding 15 hours of web browsing, top-tier keyboard comfort, and strong security features like the ThinkShutter. Conversely, the device suffers from high thermals under...Read more

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T
techbusiness.it
26/01/2020
Lenovo ThinkCentre M90n Nano Review: A Powerful Mini PC

The Lenovo ThinkCentre M90n Nano is an ultra-compact, 0.35-liter desktop designed for space-constrained environments, featuring MIL-STD 810G durability despite its small, plastic chassis. Performance-wise, it offers Intel 8th Gen processors, dual M.2 SSD slots for storage expansion, and versatile connectivity, including USB-C power delivery. However, the device suffers from a loud...Read more

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L
laptopmedia.com
19/09/2019
HP EliteBook 840 G6 review - one for stylish business professionals

The HP EliteBook 840 G6 is a premium 14-inch business laptop featuring a durable, all-aluminum chassis,Whiskey Lake processors, and excellent upgradeability with two RAM slots and M.2 storage, according to LaptopMedia. Its standout features include a high-quality 94% sRGB display and exceptional battery life, lasting over 16 hours in tests. While it operates quietly, drawbacks...Read more

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laptopmedia.com
23/10/2019
Lenovo ThinkPad P53s Review: An Energy-Efficient Mobile Workstation

The LaptopMedia review of the Lenovo ThinkPad P53s highlights the device as an energy-efficient, lightweight mobile workstation, featuring ULV processors and an Nvidia Quadro P520 GPU in a durable chassis. Key pros include exceptional battery life (over 13 hours of web browsing), quiet operation, and robust security features. However, the review notes cons such as moderate,...Read more

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laptopmedia.com
19/07/2019
Lenovo ThinkPad T590 Review - A Versatile Business Workhorse

The Lenovo ThinkPad T590 is a durable "corporate workhorse" featuring a 19.1 mm thin, 1.75 kg chassis with a spill-resistant, backlit keyboard and a physical ThinkShutter camera cover. Key advantages include exceptional battery life of up to 15 hours and versatile connectivity options, including Thunderbolt 3 and optional LTE. However, the device is limited by a budget-oriented Full...Read more

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L
laptopmedia.com
12/06/2019
Lenovo ThinkPad X390 Yoga review - security or versatility - why not both?

The Lenovo ThinkPad X390 Yoga is a secure, durable 2-in-1 featuring a premium chassis, a superior keyboard with long key travel, and an integrated, self-charging ThinkPad Pen Pro. While praised for its usability, the device's heavy hinge prevents one-handed opening and the touchpad can feel unresponsive. The 13.3-inch Full HD IPS display offers excellent contrast and 97% sRGB...Read more

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