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Intel Core Ultra 5 135U Review | 78 Data compared

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  • Avg. price in UK: ~£270
  • Avg. price in US: ~$330
  • PassMark benchmark result: 16780
  • N. of physical cores: 12
  • CPU boost clock speed: 4.4 GHz

Intel Core Ultra 5 135U review. Compare 78 technical specifications and user reviews to see how it ranks among processors and if it is worth buying.

6.4

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%

6.4

Technical Score

10.0%

?

User score

Good
6.4

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%

5.5

Performance

18.0%

8.0

Cache & Architecture

10.0%

7.3

Memory & PCIe

7.0%

7.3

Power & Thermal

4.0%

8.7

Platform

1.0%

8.7

Integrated Graphics

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

  • 5.2
    Gaming

    Score components:

    30.0%

    6.0

    PassMark single-core benchmark score

    25.0%

    5.6

    Geekbench 6 single-core benchmark score

    20.0%

    5.8

    CPU boost clock speed

    17.0%

    2.7

    L3 cache

    8.0%

    5.1

    N. of physical cores

  • 4.2
    Video editing

    Score components:

    45.0%

    4.1

    Geekbench 6 multi-core benchmark score

    20.0%

    5.1

    N. of physical cores

    20.0%

    4.6

    CPU threads

    15.0%

    2.7

    L3 cache

  • No image
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Best prices in UK

    N/A~ £270

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 5 135U is a mid-range Meteor Lake-U mobile processor designed for thin-and-light laptops, featuring a hybrid architecture with 12 cores (2 Performance, 8 Efficient, and 2 Low-Power Efficient) and 14 threads. It operates at a base frequency of 1.6 GHz with a turbo boost up to 4.4 GHz, supported by 12 MB of Intel Smart Cache and a base power of 15W (up to 57W turbo). Key pros include an integrated AI Boost NPU for hardware-accelerated AI workloads, 4-core Intel Arc graphics, and support for high-speed memory like LPDDR5x-7467. However, its performance can be limited by its low 15W base power profile, and it features a smaller L3 cache compared to higher-end 'H' series models.

Technical Specifications of processor Intel Core Ultra 5 135U

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

6.4
Intel Core Ultra 5 135U has a technical score of 6.43 points, which is higher than that of 72.1% 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 5 135U 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%

6.4

Overall score

40.0%

9.1

Price

7.2
Intel Core Ultra 5 135U has a quality-to-price ratio of 7.2 points, which is higher than 77% 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 5 135U 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

FCBGA2049
Intel Core Ultra 5 135U uses the FCBGA2049 CPU socket, which is older than that of 65.9% of processors and equal to that of 1.5% 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 Ultra 5 135U 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+

12
Intel Core Ultra 5 135U has 12 CPU cores, which is more than 81.5% of processors and equal to 5.5% 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+

14
Intel Core Ultra 5 135U offers 14 CPU threads, which is more than 69.2% of processors and equal to 1.8% 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

?
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

4.4 GHz
Intel Core Ultra 5 135U reaches a boost clock of 4.4 GHz which is higher than that of 51.2% of processors and equal to that of 5.1% 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

2 x 1.6 GHz & 8 x 1.1 GHz & 2 x 0.7 GHz
Intel Core Ultra 5 135U has a base clock of 2x1.6 GHz & 8x1.1 GHz & 2x0.7 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

7 nm
Intel Core Ultra 5 135U uses a 7 nm process node, which is more advanced than that of 71.5% of processors and equal to that of 10.9% 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 4
Intel Core Ultra 5 135U is built on the Intel 4 foundry process, which is more advanced than that of 94.6% of processors and equal to that of 1.4% 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

12 MB
Intel Core Ultra 5 135U has an L3 cache of 12 MB which is larger than that of 54.4% of processors and equal to that of 9% of processors.
L2 cache
What it is: The total amount of L2 cache available across the processor.
When it matters: When you want to compare CPU design efficiency and how much fast intermediate cache the cores have available.

Importance: MEDIUM

Good value: >=6 MB

10 MB
Intel Core Ultra 5 135U has an L2 cache of 10 MB which is larger than that of 80.5% of processors and equal to that of 1.9% 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

1,184 KB
Intel Core Ultra 5 135U has an L1 cache of 1184 KB which is larger than that of 89.2% of processors and equal to that of 0.6% 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

DDR5/LPDDR5/LPDDR5X
Intel Core Ultra 5 135U supports DDR DDR5/LPDDR5/LPDDR5X, which is newer than that of 93.8% of processors and equal to that of 1.3% 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

7,467 MHz
Intel Core Ultra 5 135U supports memory speeds up to 7467 MHz, which is higher than that of 92.1% of processors and equal to 1.2% 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

DDR5-5600 MHz
Intel Core Ultra 5 135U supports JEDEC memory speeds up to DDR5-5600 MHz, which is higher than that of 80.3% of processors and equal to 5.1% 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

96 GB
Intel Core Ultra 5 135U supports up to 96 GB of memory, which is more than 56% of processors and equal to 5.8% 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 5 135U 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 Xe-LPG Graphics 64EU
Intel Core Ultra 5 135U uses the Intel Arc Xe-LPG Graphics 64EU integrated GPU, which is more advanced than that in 84.8% of processors and equal to that in 1.3% of processors.
Integrated GPU execution units
What it is: The number of execution units available in the integrated graphics part of the processor.
When it matters: When you plan to rely on built-in graphics and want a better sense of its light gaming, display, or media capability.

Importance: MEDIUM

Good value: >=24

64
Intel Core Ultra 5 135U has 64 GPU execution units, which is more than 87.4% of processors and equal to 3.5% 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 5 135U 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 5 135U 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

15 W
Intel Core Ultra 5 135U 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 Ultra 5 135U 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

57 W
Intel Core Ultra 5 135U has a boost power of 57 W which is lower than that of 54.6% of processors and equal to that of 1.7% 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 5 135U 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 5 135U supports configurable TDP. 52.9% of processors support configurable TDP.
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Intel Core Ultra 5 135U vs the average processor

  • More advanced microarchitecture
    Intel Core Ultra 5 135U uses a more advanced microarchitecture than the average processor (Meteor 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 5 135U uses a more advanced microarchitecture than the average processor (Meteor Lake vs Kaby Lake).Meteor Lake vs Kaby Lake
  • 6 more CPU cores
    Intel Core Ultra 5 135U has more CPU cores than the average processor (12 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 5 135U has more CPU cores than the average processor (12 vs 6). The average processor has 6 CPU cores.12 vs 6
  • 4x more L2 per core
    Intel Core Ultra 5 135U has more L2 cache per core than the average processor (2 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 5 135U has more L2 cache per core than the average processor (2 MB/core vs 0.5 MB/core). The average processor provides 0.5 MB/core of L2 cache per core.2 MB/core vs 0.5 MB/core
  • 4x larger L2 cache
    Intel Core Ultra 5 135U has a higher L2 cache than the average processor (10 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 5 135U has a higher L2 cache than the average processor (10 MB vs 2.5 MB). The average processor has L2 cache of 2.5 MB.10 MB vs 2.5 MB
  • Newer DDR support
    Intel Core Ultra 5 135U supports a newer DDR generation than the average processor (DDR5/LPDDR5/LPDDR5X 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 Ultra 5 135U supports a newer DDR generation than the average processor (DDR5/LPDDR5/LPDDR5X vs DDR4).DDR5/LPDDR5/LPDDR5X vs DDR4
  • 2.55x higher memory speed
    Intel Core Ultra 5 135U has a higher maximum memory speed than the average processor (7,467 MHz vs 2,933 MHz). The average processor supports memory speed of 2,933 MHz.
    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

    Intel Core Ultra 5 135U has a higher maximum memory speed than the average processor (7,467 MHz vs 2,933 MHz). The average processor supports memory speed of 2,933 MHz.7467 MHz vs 2933 MHz
  • 32.3% better single-core performance
    Intel Core Ultra 5 135U has a higher PassMark single-core score than the average processor (3,285 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 5 135U has a higher PassMark single-core score than the average processor (3,285 vs 2,483). The average processor scores 2,483 in PassMark single-core.3,285 vs 2,483
  • Uses big.LITTLE design
    Intel Core Ultra 5 135U uses a big.LITTLE design, the average processor does not.
    P-cores + E-cores
    What it is: Combines high-performance cores with lower-power efficiency cores instead of relying on just one core type.
    When it matters: When you want strong burst performance in demanding tasks without wasting as much power during lighter background work.

    Importance: MEDIUM

    Intel Core Ultra 5 135U uses a big.LITTLE design, the average processor does not.
  • Includes crypto acceleration
    Intel Core Ultra 5 135U includes crypto acceleration, the average processor does not.
  • Supports HMP
    Intel Core Ultra 5 135U supports HMP, the average processor does not.
  • 3 year/s newer release date
    Intel Core Ultra 5 135U has a newer release date than the average processor (2,023 vs 2,020).
  • 6 more CPU cores
    Intel Core Ultra 5 135U has more CPU cores than the average processor (12 vs 6). The average processor has 6 CPU cores.
  • 32.3% better single-core performance
    Intel Core Ultra 5 135U has a higher PassMark single-core score than the average processor (3,285 vs 2,483). The average processor scores 2,483 in PassMark single-core.
  • 73.8% higher multi-core score
    Intel Core Ultra 5 135U has a higher Geekbench 6 multi-core score than the average processor (8,329 vs 4,793). The average processor scores 4,793 in Geekbench 6 multi-core.
  • 6 more CPU threads
    Intel Core Ultra 5 135U has more CPU threads than the average processor (14 vs 8). The average processor has 8 CPU threads.
  • 31.7% higher single-core score
    Intel Core Ultra 5 135U has a higher Geekbench 6 single-core score than the average processor (1,937 vs 1,471). The average processor scores 1,471 in Geekbench 6 single-core.
  • 25% higher Cinebench R20 single-core score
    Intel Core Ultra 5 135U has a higher Cinebench R20 single-core score than the average processor (605 vs 484). The average processor scores 484 in Cinebench R20 single-core.
  • 59.3% higher PassMark score
    Intel Core Ultra 5 135U has a higher PassMark benchmark score than the average processor (16,780 vs 10,532.5). The average processor scores 10,532.5 in PassMark benchmark.
  • 2 wider front-end design
    Intel Core Ultra 5 135U has a higher front-end width than the average processor (6 vs 4). The average processor uses front-end width of 4.
  • More advanced microarchitecture
    Intel Core Ultra 5 135U uses a more advanced microarchitecture than the average processor (Meteor Lake vs Kaby Lake).
  • 4x more L2 per core
    Intel Core Ultra 5 135U has more L2 cache per core than the average processor (2 MB/core vs 0.5 MB/core). The average processor provides 0.5 MB/core of L2 cache per core.
  • 4x larger L2 cache
    Intel Core Ultra 5 135U has a higher L2 cache than the average processor (10 MB vs 2.5 MB). The average processor has L2 cache of 2.5 MB.
  • Uses big.LITTLE design
    Intel Core Ultra 5 135U uses a big.LITTLE design, the average processor does not.
  • More advanced foundry
    Intel Core Ultra 5 135U uses a more advanced foundry process than the average processor (Intel 4 vs Intel 14 nm).
  • 3.08x larger L1 cache
    Intel Core Ultra 5 135U has a higher L1 cache than the average processor (1,184 KB vs 384 KB). The average processor has L1 cache of 384 KB.
  • 41.7% smaller process node
    Intel Core Ultra 5 135U has a lower process node than the average processor (7 nm vs 12 nm). The average processor uses a process node of 12 nm.
  • 50% larger L3 cache
    Intel Core Ultra 5 135U has a higher L3 cache than the average processor (12 MB vs 8 MB). The average processor has L3 cache of 8 MB.
  • Newer DDR support
    Intel Core Ultra 5 135U supports a newer DDR generation than the average processor (DDR5/LPDDR5/LPDDR5X vs DDR4).
  • 2.55x higher memory speed
    Intel Core Ultra 5 135U has a higher maximum memory speed than the average processor (7,467 MHz vs 2,933 MHz). The average processor supports memory speed of 2,933 MHz.
  • 95.6% higher memory bandwidth
    Intel Core Ultra 5 135U has a higher memory bandwidth than the average processor (89.6 GB/s vs 45.8 GB/s). The average processor offers memory bandwidth of 45.8 GB/s.
  • Newer PCIe version
    Intel Core Ultra 5 135U supports a newer PCIe version than the average processor (4 vs 3.0).
  • 4 more PCIe lanes
    Intel Core Ultra 5 135U has more PCIe lanes than the average processor (20 vs 16). The average processor offers 16 PCIe lanes.
  • 50% more memory capacity
    Intel Core Ultra 5 135U has more maximum memory capacity than the average processor (96 GB vs 64 GB). The average processor supports 64 GB of memory.
  • 2.67x more GPU execution units
    Intel Core Ultra 5 135U has more GPU execution units than the average processor (64 vs 24). The average processor has 24 GPU execution units.
  • 1 more supported displays
    Intel Core Ultra 5 135U has more supported displays than the average processor (4 vs 3). The average processor supports 3 displays.
  • 66.7% lower base power
    Intel Core Ultra 5 135U 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.
  • 10 °C higher TJ Max
    Intel Core Ultra 5 135U has a higher TJ Max than the average processor (110 °C vs 100 °C). The average processor has a TJ Max of 100 °C.
  • 66.7% lower TDP
    Intel Core Ultra 5 135U has a lower TDP than the average processor (15 W vs 45 W). The average processor has a TDP of 45 W.

Total
Platform
Performance
Cache & Architecture
Memory & PCIe
Integrated Graphics
Power & Thermal
  • 12 lower clock multiplier
    Intel Core Ultra 5 135U has a lower clock multiplier than the average processor (16 vs 28). The average processor has a clock multiplier of 28.
  • 41.7% less L3 per core
    Intel Core Ultra 5 135U has less L3 cache per core than the average processor (1 MB/core vs 1.714 MB/core). The average processor provides 1.714 MB/core of L3 cache per core.
  • 10 °C higher CPU temperature
    Intel Core Ultra 5 135U 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.
  • 41.7% less L3 per core
    Intel Core Ultra 5 135U has less L3 cache per core than the average processor (1 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 5 135U has less L3 cache per core than the average processor (1 MB/core vs 1.714 MB/core). The average processor provides 1.714 MB/core of L3 cache per core.1 MB/core vs 1.714 MB/core
  • 10 °C higher CPU temperature
    Intel Core Ultra 5 135U 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 5 135U 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
  • 12 lower clock multiplier
    Intel Core Ultra 5 135U has a lower clock multiplier than the average processor (16 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 5 135U has a lower clock multiplier than the average processor (16 vs 28). The average processor has a clock multiplier of 28.16 vs 28
Total
Performance
Cache & Architecture
Power & Thermal

Graphic comparison of Intel Core Ultra 5 135U and other processors

Attribute category
Attribute
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Third-party reviews

What customers like about Intel Core Ultra 5 135U?

  • High energy efficiency with a 15W base power draw, making it ideal for thin laptops and tablets
  • Includes a dedicated NPU (Neural Processing Unit) for accelerating local AI tasks and offloading background processes
  • Strong multi-tasking capability for a U-series chip, featuring 12 cores and 14 threads
  • Excellent for standard office workloads, school, and web surfing with long theoretical battery life
  • Updated integrated Arc graphics support modern codecs like AV1 and AI frame generation (XeSS)
  • Supports high-speed memory including LPDDR5x-7467, matching or exceeding many competitors

What customers dislike about Intel Core Ultra 5 135U?

  • Integrated graphics performance is relatively limited compared to 'H' series counterparts, making it unsuitable for demanding modern games
  • Significant reduction in L3 cache (12MB) compared to higher-tier models like the Ultra 7, which may impact performance in data-heavy apps
  • Locked multiplier prevents any overclocking to boost performance
  • Real-world performance is highly dependent on the laptop's specific cooling solution and power limits
  • Some users feel the performance gain over previous 13th-gen Intel Core i5/i7 U-series chips is marginal

Expert reviews

C
cpubenchmark.net
29/03/2026
Intel Core Ultra 5 135U - CPU Benchmarks

The Intel Core Ultra 5 135U is a 12-core, 14-thread Meteor Lake-U processor released in Q1 2024, optimized for efficient performance in thin-and-light business laptops with a 15W TDP. It delivers notable improvements over previous generations, offering roughly 20-33% higher multi-threaded performance than the i5-1335U while incorporating an Intel AI Boost NPU and Arc graphics. Pros...Read more

C
cpubenchmark.net
29/03/2026
Intel Core Ultra 5 135U - Processor Performance Tests

The Intel Core Ultra 5 135U is a 12-core, 14-thread Meteor Lake-U laptop processor released in early 2024, featuring a 15W TDP, a dedicated AI NPU, and an average PassMark CPU Mark of 16,774. Key advantages include its high power efficiency for thin-and-light laptops, support for fast LPDDR5x RAM up to 96GB, and inclusion of vPro security features. Limitations include a reduced 12MB...Read more

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G
geekom.es
22/07/2025
Intel Core Ultra 5 vs. Intel Core i5: Are They the Same?

The Intel Core Ultra 5 (125H/135H) highlights superior efficiency through a "Low-Power Island" architecture and a significantly faster Arc GPU, delivering over 100% better graphics performance than Iris Xe, though at a higher cost. Conversely, the Intel Core i5-13500H excels in raw value, high-power sustained single-thread tasks, and price-per-performance, but suffers from higher...Read more

(Translated)Show original
C
cpubenchmark.net
01/03/2024
Intel Core Ultra 5 135U CPU Performance Benchmarks

The Intel Core Ultra 5 135U is a 12-core, 14-thread, Meteor Lake-U series processor designed for thin-and-light laptops, featuring a dedicated AI Boost NPU and 4-core integrated Xe Graphics. It offers notable improvements in multi-threaded tasks, delivering roughly 20% to 33% higher performance than older i7-1355U and i5-1235U models respectively. Advantages include strong power...Read more

(Translated)Show original

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