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Intel Core Ultra 7 255H Review | 78 Data compared

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  • Avg. price in UK: ~£420
  • Avg. price in US: ~$510
  • PassMark benchmark result: 30642
  • N. of physical cores: 16
  • CPU boost clock speed: 5.1 GHz

Intel Core Ultra 7 255H review. Compare 78 technical specifications and user reviews to see how it ranks among processors and if it is worth buying.

7.8

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%

7.8

Technical Score

10.0%

?

User score

Very good
7.8

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%

7.6

Performance

18.0%

8.8

Cache & Architecture

10.0%

7.9

Memory & PCIe

7.0%

6.5

Power & Thermal

4.0%

8.4

Platform

1.0%

7.8

Integrated Graphics

Very good
?

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

  • 7.6
    Gaming

    Score components:

    30.0%

    8.4

    PassMark single-core benchmark score

    25.0%

    9.0

    Geekbench 6 single-core benchmark score

    20.0%

    7.9

    CPU boost clock speed

    17.0%

    4.4

    L3 cache

    8.0%

    6.7

    N. of physical cores

  • 7.1
    Video editing

    Score components:

    45.0%

    9.0

    Geekbench 6 multi-core benchmark score

    20.0%

    6.7

    N. of physical cores

    20.0%

    5.2

    CPU threads

    15.0%

    4.4

    L3 cache

  • No image
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Best prices in UK

    N/A~ £420

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 Ultra 7 255H is a high-end mobile processor based on the 3nm Arrow Lake-H architecture, featuring 16 cores (6 Lion Cove P-cores, 8 Skymont E-cores, and 2 Low Power E-cores) and 16 threads with a maximum turbo frequency of 5.1 GHz. Key characteristics include a 28W base TDP (scalable up to 115W), a 24MB L3 cache, an integrated Intel Arc 140T GPU with 8 Xe-cores reaching 2.25 GHz, and a dedicated NPU for AI tasks offering 13 TOPS of performance. Main pros include its significant single-core performance gains over previous generations, support for high-speed LPDDR5x-8400 or DDR5-6400 memory, and improved energy efficiency for thin-and-light laptops. Notable cons include its locked multiplier which prevents overclocking, a lack of hyper-threading support on P-cores, and multi-core efficiency that may still lag behind top-tier competitors in certain high-load scenarios.

Technical Specifications of processor Intel Core Ultra 7 255H

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

7.8
Intel Core Ultra 7 255H has a technical score of 7.78 points, which is higher than that of 94.3% 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 Ultra 7 255H 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%

7.8

Overall score

40.0%

8.3

Price

7.9
Intel Core Ultra 7 255H has a quality-to-price ratio of 7.9 points, which is higher than 92.7% 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 Ultra 7 255H 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

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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

HM870, WM880
Intel Core Ultra 7 255H supports HM870, WM880 chipsets, which is narrower compatibility than 62.6% of processors and equal to that of 0.7% of processors.
CPU architecture
What it is: The processor family or design generation behind the chip, such as Zen 4 or Raptor Lake.
When it matters: When you are comparing CPUs across generations and want a clearer sense of their design age, feature level, and expected performance class.

Importance: HIGH

x86-64
Intel Core Ultra 7 255H 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+

16
Intel Core Ultra 7 255H has 16 CPU cores, which is more than 91.5% of processors and equal to 4% of processors.
CPU threads
What it is: The total number of processing threads the CPU can handle at once.
When it matters: When you run heavily threaded workloads or multitask a lot.

Importance: HIGH

Good value: 16+

16
Intel Core Ultra 7 255H offers 16 CPU threads, which is more than 71.1% of processors and equal to 13.9% of processors.
Threads per core
What it is: The number of threads each physical core can handle at once.
When it matters: When you want to understand how much thread-level parallelism each core can provide in multitasking or heavily threaded work.

Importance: MEDIUM

Good value: 2

1
Intel Core Ultra 7 255H offers 1 threads per core, which is fewer than 69.7% of processors and equal to 30.3% of processors.
CPU boost clock speed
What it is: The highest clock speed the processor can reach under boost conditions.
When it matters: When you care about peak speed in short bursts.

Importance: HIGH

Good value: >4.7 GHz

5.1 GHz
Intel Core Ultra 7 255H reaches a boost clock of 5.1 GHz which is higher than that of 86.1% of processors and equal to that of 4.1% of processors.
CPU base clock speed
What it is: The processor's normal all-core starting frequency before boost behavior raises clocks temporarily.
When it matters: When you care about steadier performance in longer workloads rather than short burst speed alone.

Importance: MEDIUM

6 x 2.0 GHz & 10 x 1.5 GHz
Intel Core Ultra 7 255H has a base clock of 6x2.0 GHz & 10x1.5 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

3 nm
Intel Core Ultra 7 255H uses a 3 nm process node, which is more advanced than that of 96% of processors and equal to that of 4% 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

TSMC 3 nm
Intel Core Ultra 7 255H is built on the TSMC 3 nm foundry process, which is more advanced than that of 96.2% of processors and equal to that of 3.8% 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

24 MB
Intel Core Ultra 7 255H has an L3 cache of 24 MB which is larger than that of 81.5% of processors and equal to that of 5.8% 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

26 MB
Intel Core Ultra 7 255H has an L2 cache of 26 MB which is larger than that of 95.4% of processors and equal to that of 0.6% 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

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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

DDR5
Intel Core Ultra 7 255H supports DDR DDR5, which is newer than that of 66.4% of processors and equal to that of 12.6% 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

8,400 MHz
Intel Core Ultra 7 255H supports memory speeds up to 8400 MHz, which is higher than that of 98.4% of processors and equal to 0.6% 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

LPDDR5X-8400 MHz
Intel Core Ultra 7 255H supports JEDEC memory speeds up to LPDDR5X-8400 MHz, which is higher than that of 98.6% of processors and equal to 0.5% 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

128 GB
Intel Core Ultra 7 255H supports up to 128 GB of memory, which is more than 61.9% of processors and equal to 21.4% 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 Ultra 7 255H 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 Arc Graphics 140T
Intel Core Ultra 7 255H uses the Intel Arc Graphics 140T integrated GPU, which is more advanced than that in 87.1% of processors and equal to that in 0.2% 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

8
Intel Core Ultra 7 255H has 8 GPU execution units, which is fewer than 74.1% of processors and equal to 7.2% 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 Ultra 7 255H 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), AV1 (HW decode/encode)
Intel Core Ultra 7 255H supports H.264 (HW decode/encode), H.265 (HW decode/encode), VP9 (HW decode/encode), AV1 (HW decode/encode) media codecs, which is broader support than 94.6% of processors and equal to 1.9% 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

28 W
Intel Core Ultra 7 255H has a TDP of 28 W which is lower than that of 67.2% of processors and equal to that of 7.2% 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

28 W
Intel Core Ultra 7 255H has a base power of 28 W which is lower than that of 67.2% of processors and equal to that of 6.8% of processors.
Boost power (PL2)
What it is: The short-term boost power limit the processor may draw under heavier turbo loads.
When it matters: When you size cooling and power delivery for peak turbo behavior.

Importance: MEDIUM

Good value: <50 W

115 W
Intel Core Ultra 7 255H has a boost power of 115 W which is higher than that of 72.4% of processors and equal to that of 5.7% 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 Ultra 7 255H 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 Ultra 7 255H supports configurable TDP. 52.9% of processors support configurable TDP.
cTDP: 20-28 W
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Intel Core Ultra 7 255H vs the average processor

  • 6.34x better multi-core performance
    Intel Core Ultra 7 255H has a higher multi-core performance than the average processor (17,652 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 Ultra 7 255H has a higher multi-core performance than the average processor (17,652 vs 2,783). The average processor scores 2,783 in Cinebench R20 multi-core.17,652 vs 2,783
  • 74% better single-core performance
    Intel Core Ultra 7 255H has a higher PassMark single-core score than the average processor (4,320 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 Ultra 7 255H has a higher PassMark single-core score than the average processor (4,320 vs 2,483). The average processor scores 2,483 in PassMark single-core.4,320 vs 2,483
  • 10 more CPU cores
    Intel Core Ultra 7 255H has more CPU cores than the average processor (16 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 Ultra 7 255H has more CPU cores than the average processor (16 vs 6). The average processor has 6 CPU cores.16 vs 6
  • 10.4x larger L2 cache
    Intel Core Ultra 7 255H has a higher L2 cache than the average processor (26 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 Ultra 7 255H has a higher L2 cache than the average processor (26 MB vs 2.5 MB). The average processor has L2 cache of 2.5 MB.26 MB vs 2.5 MB
  • 2.91x higher PassMark score
    Intel Core Ultra 7 255H has a higher PassMark benchmark score than the average processor (30,642 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 Ultra 7 255H has a higher PassMark benchmark score than the average processor (30,642 vs 10,532.5). The average processor scores 10,532.5 in PassMark benchmark.30,642 vs 10,532.5
  • More advanced microarchitecture
    Intel Core Ultra 7 255H uses a more advanced microarchitecture than the average processor (Arrow Lake vs Kaby Lake).
    What it is: The internal core-design codename used for this processor generation.
    When it matters: When you are comparing CPUs at a deeper design level and want to identify the exact architecture behind marketing names.

    Importance: LOW

    Intel Core Ultra 7 255H uses a more advanced microarchitecture than the average processor (Arrow Lake vs Kaby Lake).Arrow Lake vs Kaby Lake
  • 18.6% higher boost clock
    Intel Core Ultra 7 255H has a higher boost clock speed than the average processor (5.1 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 Ultra 7 255H has a higher boost clock speed than the average processor (5.1 GHz vs 4.3 GHz). The average processor reaches boost clock speed of 4.3 GHz.5.1 GHz vs 4.3 GHz
  • 6x more L2 per core
    Intel Core Ultra 7 255H has more L2 cache per core than the average processor (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 Ultra 7 255H has more L2 cache per core than the average processor (3 MB/core vs 0.5 MB/core). The average processor provides 0.5 MB/core of L2 cache per core.3 MB/core vs 0.5 MB/core
  • 5 year/s newer release date
    Intel Core Ultra 7 255H has a newer release date than the average processor (2,025 vs 2,020).
  • Supports HMP
    Intel Core Ultra 7 255H supports HMP, the average processor does not.
  • 6.34x better multi-core performance
    Intel Core Ultra 7 255H has a higher multi-core performance than the average processor (17,652 vs 2,783). The average processor scores 2,783 in Cinebench R20 multi-core.
  • 74% better single-core performance
    Intel Core Ultra 7 255H has a higher PassMark single-core score than the average processor (4,320 vs 2,483). The average processor scores 2,483 in PassMark single-core.
  • 10 more CPU cores
    Intel Core Ultra 7 255H has more CPU cores than the average processor (16 vs 6). The average processor has 6 CPU cores.
  • 2.91x higher PassMark score
    Intel Core Ultra 7 255H has a higher PassMark benchmark score than the average processor (30,642 vs 10,532.5). The average processor scores 10,532.5 in PassMark benchmark.
  • 18.6% higher boost clock
    Intel Core Ultra 7 255H has a higher boost clock speed than the average processor (5.1 GHz vs 4.3 GHz). The average processor reaches boost clock speed of 4.3 GHz.
  • 8 more CPU threads
    Intel Core Ultra 7 255H has more CPU threads than the average processor (16 vs 8). The average processor has 8 CPU threads.
  • 10.4x larger L2 cache
    Intel Core Ultra 7 255H has a higher L2 cache than the average processor (26 MB vs 2.5 MB). The average processor has L2 cache of 2.5 MB.
  • More advanced microarchitecture
    Intel Core Ultra 7 255H uses a more advanced microarchitecture than the average processor (Arrow Lake vs Kaby Lake).
  • 6x more L2 per core
    Intel Core Ultra 7 255H has more L2 cache per core than the average processor (3 MB/core vs 0.5 MB/core). The average processor provides 0.5 MB/core of L2 cache per core.
  • 75% smaller process node
    Intel Core Ultra 7 255H has a lower process node than the average processor (3 nm vs 12 nm). The average processor uses a process node of 12 nm.
  • 3x larger L3 cache
    Intel Core Ultra 7 255H has a higher L3 cache than the average processor (24 MB vs 8 MB). The average processor has L3 cache of 8 MB.
  • Uses big.LITTLE design
    Intel Core Ultra 7 255H uses a big.LITTLE design, the average processor does not.
  • More advanced foundry
    Intel Core Ultra 7 255H uses a more advanced foundry process than the average processor (TSMC 3 nm vs Intel 14 nm).
  • Newer PCIe version
    Intel Core Ultra 7 255H supports a newer PCIe version than the average processor (5 vs 3.0).
  • 2.86x higher memory speed
    Intel Core Ultra 7 255H has a higher maximum memory speed than the average processor (8,400 MHz vs 2,933 MHz). The average processor supports memory speed of 2,933 MHz.
  • 2.24x higher memory bandwidth
    Intel Core Ultra 7 255H has a higher memory bandwidth than the average processor (102.4 GB/s vs 45.8 GB/s). The average processor offers memory bandwidth of 45.8 GB/s.
  • 4 more PCIe lanes
    Intel Core Ultra 7 255H has more PCIe lanes than the average processor (20 vs 16). The average processor offers 16 PCIe lanes.
  • Newer DDR support
    Intel Core Ultra 7 255H supports a newer DDR generation than the average processor (DDR5 vs DDR4).
  • 2x more memory capacity
    Intel Core Ultra 7 255H has more maximum memory capacity than the average processor (128 GB vs 64 GB). The average processor supports 64 GB of memory.
  • Supports ECC memory
    Intel Core Ultra 7 255H supports ECC memory, the average processor does not.
  • Better integrated GPU
    Intel Core Ultra 7 255H uses a better integrated GPU than the average processor (Intel Arc Graphics 140T vs Intel UHD Graphics 630).
  • 1 more supported displays
    Intel Core Ultra 7 255H has more supported displays than the average processor (4 vs 3). The average processor supports 3 displays.
  • 10 °C higher TJ Max
    Intel Core Ultra 7 255H has a higher TJ Max than the average processor (110 °C vs 100 °C). The average processor has a TJ Max of 100 °C.
  • 37.8% lower base power
    Intel Core Ultra 7 255H has a lower base power draw than the average processor (28 W vs 45 W). The average processor has a base power draw of 45 W.
  • 37.8% lower TDP
    Intel Core Ultra 7 255H has a lower TDP than the average processor (28 W vs 45 W). The average processor has a TDP of 45 W.

Total
Overall
Platform
Performance
Cache & Architecture
Memory & PCIe
Integrated Graphics
Power & Thermal
  • No multithreading support
    Intel Core Ultra 7 255H does not support multithreading, the average processor does.
  • 1 fewer threads per core
    Intel Core Ultra 7 255H has fewer threads per core than the average processor (1 vs 2). The average processor offers 2 threads per core.
  • 8 lower clock multiplier
    Intel Core Ultra 7 255H has a lower clock multiplier than the average processor (20 vs 28). The average processor has a clock multiplier of 28.
  • 12.5% less L3 per core
    Intel Core Ultra 7 255H 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.
  • 66.7% fewer GPU execution units
    Intel Core Ultra 7 255H has fewer GPU execution units than the average processor (8 vs 24). The average processor has 24 GPU execution units.
  • 79.7% higher boost power
    Intel Core Ultra 7 255H has a higher boost power draw than the average processor (115 W vs 64 W). The average processor has a boost power draw of 64 W.
  • 10 °C higher CPU temperature
    Intel Core Ultra 7 255H has a higher CPU temperature than the average processor (110 °C vs 100 °C). The average processor runs at a CPU temperature of 100 °C.
  • No multithreading support
    Intel Core Ultra 7 255H does not support multithreading, the average processor does.
    What it is: Lets each physical core run more than one thread at the same time, such as with Hyper-Threading or SMT.
    When it matters: When multitasking, rendering, compiling, virtualization, or other thread-heavy work benefits from more total processing threads.

    Importance: HIGH

    Intel Core Ultra 7 255H does not support multithreading, the average processor does.
  • 79.7% higher boost power
    Intel Core Ultra 7 255H has a higher boost power draw than the average processor (115 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 Ultra 7 255H has a higher boost power draw than the average processor (115 W vs 64 W). The average processor has a boost power draw of 64 W.115 W vs 64 W
  • 12.5% less L3 per core
    Intel Core Ultra 7 255H has less L3 cache per core than the average processor (1.5 MB/core vs 1.714 MB/core). The average processor provides 1.714 MB/core of L3 cache per core.
    What it is: The amount of L3 cache effectively available per CPU core.
    When it matters: When you are comparing how much shared cache each core can draw on in deeper technical analysis.

    Importance: MEDIUM

    Good value: >=2 MB/core

    Intel Core Ultra 7 255H has less L3 cache per core than the average processor (1.5 MB/core vs 1.714 MB/core). The average processor provides 1.714 MB/core of L3 cache per core.1.5 MB/core vs 1.714 MB/core
  • 10 °C higher CPU temperature
    Intel Core Ultra 7 255H has a higher CPU temperature than the average processor (110 °C vs 100 °C). The average processor runs at a CPU temperature of 100 °C.
    What it is: The reported operating temperature of the processor.
    When it matters: When you monitor thermals, cooling, or system stability.

    Importance: LOW

    Good value: <100 °C

    Intel Core Ultra 7 255H has a higher CPU temperature than the average processor (110 °C vs 100 °C). The average processor runs at a CPU temperature of 100 °C.110 °C vs 100 °C
  • 68% more expensive
    Intel Core Ultra 7 255H is more expensive than the average processor (£420 vs £250).
    Intel Core Ultra 7 255H is more expensive than the average processor (£420 vs £250).£420 vs £250
  • 1 fewer threads per core
    Intel Core Ultra 7 255H has fewer threads per core than the average processor (1 vs 2). The average processor offers 2 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

    Intel Core Ultra 7 255H has fewer threads per core than the average processor (1 vs 2). The average processor offers 2 threads per core.1 vs 2
  • 66.7% fewer GPU execution units
    Intel Core Ultra 7 255H has fewer GPU execution units than the average processor (8 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 Ultra 7 255H has fewer GPU execution units than the average processor (8 vs 24). The average processor has 24 GPU execution units.8 vs 24
  • 8 lower clock multiplier
    Intel Core Ultra 7 255H has a lower clock multiplier than the average processor (20 vs 28). The average processor has a clock multiplier of 28.
    What it is: The ratio used to derive CPU frequency from the base clock.
    When it matters: When you tune or compare overclocking behavior.

    Importance: LOW

    Good value: >33

    Intel Core Ultra 7 255H has a lower clock multiplier than the average processor (20 vs 28). The average processor has a clock multiplier of 28.20 vs 28
Total
Overall
Performance
Cache & Architecture
Integrated Graphics
Power & Thermal

Graphic comparison of Intel Core Ultra 7 255H and other processors

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Third-party reviews

What customers like about Intel Core Ultra 7 255H?

  • Significant single-core performance uplift, showing up to a 32% improvement over previous generation Meteor Lake equivalents
  • Strong integrated graphics performance with the Arc 140T, featuring 8 Xe-cores
  • Excellent performance-per-watt efficiency in mobile workstations like the ThinkPad P1 Gen 8, ranking just behind Lunar Lake devices
  • Highly capable for demanding tasks including high-end gaming, content creation, and code compilation
  • Versatile memory support accommodating up to 128GB of LPDDR5/x or DDR5-6400 RAM

What customers dislike about Intel Core Ultra 7 255H?

  • Multithreaded efficiency can be outclassed by competitors like AMD's Ryzen AI series when power is limited to 50W
  • Susceptible to thermal throttling during prolonged heavy usage, with some users reporting a 15-20% performance drop after 10 minutes
  • Battery life performance is reported as inconsistent and may not match the longevity of competitors like Apple Silicon
  • NPU performance (13 TOPS) is significantly lower than Lunar Lake counterparts (45 TOPS), which may limit some AI-driven workloads
  • Locked multiplier prevents manual overclocking for performance enthusiasts

Expert reviews

C
cpu.userbenchmark.com
01/03/2026
Intel Core Ultra 7 255H - CPU UserBenchmarks Would you like to see a comparison of benchmark scores (like Cinebench or Geekbench) from these specific...

The Intel Core Ultra 7 255H is a 16-core, 3nm Arrow Lake-H mobile processor designed for high-performance laptops, featuring 6 Lion Cove P-cores, 8 Skymont E-cores, and 2 low-power E-cores. UserBenchmark ranks this CPU near the top of its comparison lists with an "outstanding" average score, highlighting a 32% increase in single-core performance over the predecessor Core Ultra 7...Read more

C
cpubenchmark.net
01/03/2026
Intel Core Ultra 7 255H - CPU Benchmarks (PassMark)

The Intel Core Ultra 7 255H is a high-end Arrow Lake-H mobile processor featuring 16 cores (6P, 8E, 2LPE) and fabricated on a 3nm process, offering a significant 32% increase in single-thread performance over the 155H. Key advantages include up to 5.1 GHz boost clocks, the integrated Intel Arc 140T GPU, and 13 TOPS AI NPU, alongside support for fast 8400 MT/s LPDDR5x memory....Read more

L
laptopmedia.com
01/03/2026
Intel Core Ultra 7 255H - LaptopMedia Benchmarks

The Intel Core Ultra 7 255H is a 16-core Arrow Lake-H processor utilizing a 3nm architecture to deliver significant IPC improvements, resulting in a 32% faster single-core performance over its predecessor despite removing Hyper-Threading. The chip features 6 performance, 8 efficiency, and 2 low-power efficiency cores, with peak speeds reaching 5.1 GHz. Performance is bolstered by...Read more

P
phoronix.com
11/11/2025
Intel Core Ultra 7 255H Linux CPU Performance Review

The Phoronix review of the Intel Core Ultra 7 255H ("Arrow Lake H") on a Lenovo ThinkPad P1 Gen 8 reveals a processor requiring a "performance" profile to maximize potential, as default balanced settings often yield sub-optimal results. Key strengths include top-tier peak performance in code compilation and browser benchmarks, along with competitive power efficiency under high...Read more

Video reviews

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