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Intel Xeon W 11855M Review | 78 Data compared

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  • Avg. price in UK: ~£380
  • Avg. price in US: ~$450
  • PassMark benchmark result: 17350
  • N. of physical cores: 6
  • CPU boost clock speed: 4.9 GHz

Intel Xeon W 11855M review. Compare 78 technical specifications and user reviews to see how it ranks among processors and if it is worth buying.

5.6

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%

5.6

Technical Score

10.0%

?

User score

Good
5.6

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%

4.9

Performance

18.0%

7.1

Cache & Architecture

10.0%

6.1

Memory & PCIe

7.0%

6.1

Power & Thermal

4.0%

7.4

Platform

1.0%

8.0

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

  • 5.4
    Gaming

    Score components:

    30.0%

    5.6

    PassMark single-core benchmark score

    25.0%

    5.7

    Geekbench 6 single-core benchmark score

    20.0%

    7.3

    CPU boost clock speed

    17.0%

    3.5

    L3 cache

    8.0%

    2.6

    N. of physical cores

  • 3.6
    Video editing

    Score components:

    45.0%

    3.8

    Geekbench 6 multi-core benchmark score

    20.0%

    2.6

    N. of physical cores

    20.0%

    4.0

    CPU threads

    15.0%

    3.5

    L3 cache

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Best prices in UK

    N/A~ £380

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 Xeon W-11855M is a high-end mobile workstation processor based on the 10nm Tiger Lake-H architecture, featuring 6 cores and 12 threads with a 3.2 GHz base clock and a 4.9 GHz max turbo frequency. It includes 18 MB of Intel Smart Cache, supports up to 128 GB of DDR4-3200 memory with ECC support, and integrates 32 execution units of Intel UHD Graphics. Main pros include its professional-grade reliability features like ECC memory and vPro eligibility, PCIe 4.0 support with 20 lanes, and specialized instruction sets like AVX-512 and DL Boost for AI acceleration. However, its main cons are the limited 6-core count compared to 8-core contemporaries, a high 45W TDP that can lead to significant thermal throttling in thin laptop chassis, and lower multi-threaded performance when compared to newer consumer-grade chips like the Core i7-12700H.

Technical Specifications of processor Intel Xeon W 11855M

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

5.6
Intel Xeon W 11855M has a technical score of 5.64 points, which is higher than that of 58% 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 Xeon W 11855M 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%

5.6

Overall score

40.0%

8.5

Price

6.5
Intel Xeon W 11855M has a quality-to-price ratio of 6.5 points, which is higher than 53% 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 Xeon W 11855M 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.
mobile workstation
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

FCBGA1787
Intel Xeon W 11855M uses the FCBGA1,787 CPU socket, which is older than that of 69.4% of processors and equal to that of 1.1% 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

WM590
Intel Xeon W 11855M supports WM590 chipsets, which is narrower compatibility than 64.4% of processors and equal to that of 0.1% 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 Xeon W 11855M 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+

6
Intel Xeon W 11855M has 6 CPU cores, which is more than 49.9% of processors and equal to 13.4% 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+

12
Intel Xeon W 11855M offers 12 CPU threads, which is more than 55.1% of processors and equal to 14.1% 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 Xeon W 11855M 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

4.9 GHz
Intel Xeon W 11855M reaches a boost clock of 4.9 GHz which is higher than that of 75.6% of processors and equal to that of 4.6% 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 3.2 GHz
Intel Xeon W 11855M has a base clock of 6x3.2 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

10 nm
Intel Xeon W 11855M uses a 10 nm process node, which is more advanced than that of 52.3% of processors and equal to that of 19.1% 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 10 nm SuperFin
Intel Xeon W 11855M is built on the Intel 10 nm SuperFin foundry process, which is more advanced than that of 54% of processors and equal to that of 2.6% 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

18 MB
Intel Xeon W 11855M has an L3 cache of 18 MB which is larger than that of 77.2% of processors and equal to that of 2% 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

7.5 MB
Intel Xeon W 11855M has an L2 cache of 7.5 MB which is larger than that of 72.6% of processors and equal to that of 0.8% 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

480 KB
Intel Xeon W 11855M has an L1 cache of 480 KB which is larger than that of 61.6% of processors and equal to that of 1.9% 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
Intel Xeon W 11855M supports DDR DDR4, which is newer than that of 26.3% of processors and equal to that of 31.7% 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

3,200 MHz
Intel Xeon W 11855M supports memory speeds up to 3,200 MHz, which is higher than that of 51.5% of processors and equal to 8.3% 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

DDR4-3200 MHz
Intel Xeon W 11855M supports JEDEC memory speeds up to DDR4-3200 MHz, which is higher than that of 51.1% of processors and equal to 8.4% 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 Xeon W 11855M 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 Xeon W 11855M 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 32EU
Intel Xeon W 11855M uses the Intel UHD Graphics 32EU integrated GPU, which is less advanced than that in 62.1% of processors and equal to that in 0.9% 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

32
Intel Xeon W 11855M has 32 GPU execution units, which is more than 70.8% of processors and equal to 9.9% 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

350 MHz
Intel Xeon W 11855M has an integrated GPU clock of 350 MHz which is higher than that of 43.5% of processors and equal to that of 29.6% 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

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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

45 W
Intel Xeon W 11855M has a TDP of 45 W which is lower than that of 39.9% of processors and equal to that of 11.4% 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

45 W
Intel Xeon W 11855M has a base power of 45 W which is lower than that of 39.7% of processors and equal to that of 11.6% 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 Xeon W 11855M 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 Xeon W 11855M 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 Xeon W 11855M supports configurable TDP. 52.9% of processors support configurable TDP.
cTDP: 35-45 W
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Intel Xeon W 11855M vs the average processor

  • 2.5x more L2 per core
    Intel Xeon W 11855M has more L2 cache per core than the average processor (1.3 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 Xeon W 11855M has more L2 cache per core than the average processor (1.3 MB/core vs 0.5 MB/core). The average processor provides 0.5 MB/core of L2 cache per core.1.25 MB/core vs 0.5 MB/core
  • 14% higher boost clock
    Intel Xeon W 11855M has a higher boost clock speed than the average processor (4.9 GHz vs 4.3 GHz). The average processor reaches boost clock speed of 4.3 GHz.
    What it is: The highest clock speed the processor can reach under boost conditions.
    When it matters: When you care about peak speed in short bursts.

    Importance: HIGH

    Good value: >4.7 GHz

    Intel Xeon W 11855M has a higher boost clock speed than the average processor (4.9 GHz vs 4.3 GHz). The average processor reaches boost clock speed of 4.3 GHz.4.9 GHz vs 4.3 GHz
  • 75% more L3 per core
    Intel Xeon W 11855M has more L3 cache per core than the average processor (3 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 Xeon W 11855M has more L3 cache per core than the average processor (3 MB/core vs 1.714 MB/core). The average processor provides 1.714 MB/core of L3 cache per core.3 MB/core vs 1.714 MB/core
  • 64.8% better multi-core performance
    Intel Xeon W 11855M has a higher multi-core performance than the average processor (4,586 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 Xeon W 11855M has a higher multi-core performance than the average processor (4,586 vs 2,783). The average processor scores 2,783 in Cinebench R20 multi-core.4,586 vs 2,783
  • Newer PCIe version
    Intel Xeon W 11855M supports a newer PCIe version than the average processor (4 vs 3.0).
    What it is: The newest PCIe generation the processor can use directly for graphics cards, SSDs, and other high-speed expansion devices.
    When it matters: When you want support for newer GPUs or SSDs, or more bandwidth for high-speed expansion hardware.

    Importance: HIGH

    Good value: 4.0

    Intel Xeon W 11855M supports a newer PCIe version than the average processor (4 vs 3.0).4.0 vs 3.0
  • 3x larger L2 cache
    Intel Xeon W 11855M has a higher L2 cache than the average processor (7.5 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 Xeon W 11855M has a higher L2 cache than the average processor (7.5 MB vs 2.5 MB). The average processor has L2 cache of 2.5 MB.7.5 MB vs 2.5 MB
  • 35.1% higher single-core score
    Intel Xeon W 11855M has a higher Geekbench 6 single-core score than the average processor (1988 vs 1,471). The average processor scores 1,471 in Geekbench 6 single-core.
    What it is: A Geekbench 6 score that reflects single-core CPU performance in mixed modern workloads.
    When it matters: When you care about snappy everyday performance in lighter apps, browsing, office work, or tasks that do not scale well across many cores.

    Importance: HIGH

    Good value: >2000

    Intel Xeon W 11855M has a higher Geekbench 6 single-core score than the average processor (1988 vs 1,471). The average processor scores 1,471 in Geekbench 6 single-core.1,988 vs 1,471
  • 25.9% better single-core performance
    Intel Xeon W 11855M has a higher PassMark single-core score than the average processor (3,126 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 Xeon W 11855M has a higher PassMark single-core score than the average processor (3,126 vs 2,483). The average processor scores 2,483 in PassMark single-core.3,126 vs 2,483
  • Advanced security extensions
    Intel Xeon W 11855M provides more advanced security extensions than the average processor (AES-NI, Secure Key, SGX, TXT, OS Guard, Boot Guard, CET, MBEC, TME vs AES-NI, NX bit, Secure Processor).
  • 14% higher boost clock
    Intel Xeon W 11855M has a higher boost clock speed than the average processor (4.9 GHz vs 4.3 GHz). The average processor reaches boost clock speed of 4.3 GHz.
  • 64.8% better multi-core performance
    Intel Xeon W 11855M has a higher multi-core performance than the average processor (4,586 vs 2,783). The average processor scores 2,783 in Cinebench R20 multi-core.
  • 35.1% higher single-core score
    Intel Xeon W 11855M has a higher Geekbench 6 single-core score than the average processor (1988 vs 1,471). The average processor scores 1,471 in Geekbench 6 single-core.
  • 25.9% better single-core performance
    Intel Xeon W 11855M has a higher PassMark single-core score than the average processor (3,126 vs 2,483). The average processor scores 2,483 in PassMark single-core.
  • 23.8% higher Cinebench R20 single-core score
    Intel Xeon W 11855M has a higher Cinebench R20 single-core score than the average processor (599 vs 484). The average processor scores 484 in Cinebench R20 single-core.
  • 55.6% higher multi-core score
    Intel Xeon W 11855M has a higher Geekbench 6 multi-core score than the average processor (7,460 vs 4,793). The average processor scores 4,793 in Geekbench 6 multi-core.
  • 64.7% higher PassMark score
    Intel Xeon W 11855M has a higher PassMark benchmark score than the average processor (17,350 vs 10,532.5). The average processor scores 10,532.5 in PassMark benchmark.
  • 4 more CPU threads
    Intel Xeon W 11855M has more CPU threads than the average processor (12 vs 8). The average processor has 8 CPU threads.
  • 1 wider front-end design
    Intel Xeon W 11855M has a higher front-end width than the average processor (5 vs 4). The average processor uses front-end width of 4.
  • 2.5x more L2 per core
    Intel Xeon W 11855M has more L2 cache per core than the average processor (1.3 MB/core vs 0.5 MB/core). The average processor provides 0.5 MB/core of L2 cache per core.
  • 75% more L3 per core
    Intel Xeon W 11855M has more L3 cache per core than the average processor (3 MB/core vs 1.714 MB/core). The average processor provides 1.714 MB/core of L3 cache per core.
  • 3x larger L2 cache
    Intel Xeon W 11855M has a higher L2 cache than the average processor (7.5 MB vs 2.5 MB). The average processor has L2 cache of 2.5 MB.
  • 2.25x larger L3 cache
    Intel Xeon W 11855M has a higher L3 cache than the average processor (18 MB vs 8 MB). The average processor has L3 cache of 8 MB.
  • More advanced microarchitecture
    Intel Xeon W 11855M uses a more advanced microarchitecture than the average processor (Tiger Lake vs Kaby Lake).
  • More advanced foundry
    Intel Xeon W 11855M uses a more advanced foundry process than the average processor (Intel 10 nm SuperFin vs Intel 14 nm).
  • 16.7% smaller process node
    Intel Xeon W 11855M has a lower process node than the average processor (10 nm vs 12 nm). The average processor uses a process node of 12 nm.
  • Newer PCIe version
    Intel Xeon W 11855M supports a newer PCIe version than the average processor (4 vs 3.0).
  • 4 more PCIe lanes
    Intel Xeon W 11855M has more PCIe lanes than the average processor (20 vs 16). The average processor offers 16 PCIe lanes.
  • 2x more memory capacity
    Intel Xeon W 11855M 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 Xeon W 11855M supports ECC memory, the average processor does not.
  • 1 more supported displays
    Intel Xeon W 11855M has more supported displays than the average processor (4 vs 3). The average processor supports 3 displays.

Total
Platform
Performance
Cache & Architecture
Memory & PCIe
Integrated Graphics
  • Narrower instruction support
    Intel Xeon W 11855M supports a narrower instruction set than the average processor (SSE4.1, SSE4.2, AVX, AVX2, AVX-512 vs MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, F16C, FMA3, AES, SHA).
  • Older CPU socket
    Intel Xeon W 11855M uses an older CPU socket than the average processor (FCBGA1,787 vs FP2).
  • 6.7% larger die size
    Intel Xeon W 11855M has a higher die size than the average processor (190 mm² vs 178 mm²). The average processor has a die size of 178 mm².
  • 79.7% higher boost power
    Intel Xeon W 11855M 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.
  • Narrower instruction support
    Intel Xeon W 11855M supports a narrower instruction set than the average processor (SSE4.1, SSE4.2, AVX, AVX2, AVX-512 vs MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, F16C, FMA3, AES, SHA).
    What it is: The supported CPU instruction sets and extensions.
    When it matters: When you run software that depends on specific CPU instructions.

    Importance: MEDIUM

    Intel Xeon W 11855M supports a narrower instruction set than the average processor (SSE4.1, SSE4.2, AVX, AVX2, AVX-512 vs MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, F16C, FMA3, AES, SHA).SSE4.1, SSE4.2, AVX, AVX2, AVX-512 vs MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, F16C, FMA3, AES, SHA
  • 79.7% higher boost power
    Intel Xeon W 11855M 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 Xeon W 11855M 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
  • 52% more expensive
    Intel Xeon W 11855M is more expensive than the average processor (£380 vs £250).
    Intel Xeon W 11855M is more expensive than the average processor (£380 vs £250).£380 vs £250
  • 6.7% larger die size
    Intel Xeon W 11855M has a higher die size than the average processor (190 mm² vs 178 mm²). The average processor has a die size of 178 mm².
    What it is: The physical area of the processor die, usually measured in square millimeters.
    When it matters: When you are comparing chip scale, packaging density, or broader design differences rather than direct user-visible performance.

    Importance: LOW

    Good value: <150 mm²

    Intel Xeon W 11855M has a higher die size than the average processor (190 mm² vs 178 mm²). The average processor has a die size of 178 mm².190 mm² vs 178 mm²
  • Older CPU socket
    Intel Xeon W 11855M uses an older CPU socket than the average processor (FCBGA1,787 vs FP2).
    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

    Intel Xeon W 11855M uses an older CPU socket than the average processor (FCBGA1,787 vs FP2).FCBGA1787 vs FP2
Total
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Power & Thermal

Graphic comparison of Intel Xeon W 11855M and other processors

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Third-party reviews

What customers like about Intel Xeon W 11855M?

  • Supports Error Correction Code (ECC) memory, which is essential for preventing data corruption in mission-critical workstation tasks.
  • Includes AVX-512 support, providing a significant advantage for specific engineering and scientific applications compared to some newer consumer chips.
  • Features a high turbo boost clock speed of up to 4.9 GHz, offering strong single-core performance for demanding workloads.
  • Equipped with 18 MB of L3 cache, facilitating faster data access and improved system-wide responsiveness.
  • Provides hardware virtualization support, which significantly enhances the performance of virtual machines.

What customers dislike about Intel Xeon W 11855M?

  • Limited to 6 cores, which may result in slower multi-threaded performance compared to contemporary 8-core or higher processors.
  • Users have reported heating issues in mobile workstation chassis, noting that the chip can struggle to maintain high clock speeds under sustained heavy loads.
  • Lacks an unlocked multiplier, preventing users from easily overclocking the processor for additional performance gains.
  • Some users on comparison sites have reported subjective sluggishness and hanging in certain laptop configurations, despite the high specs.
  • Considered poor value for gaming, as consumer-grade CPUs often provide better performance at lower price points for non-workstation tasks.

Expert reviews

C
cpubenchmark.net
01/07/2023
Summary of the review
Intel Xeon W-11855M vs i7-11800H - CPU Benchmarks Would you like to compare the multi-threaded performance of this model against a specific workstatio...
B
browser.geekbench.com
Ongoing
Summary of the review
Intel Xeon W-11855M Benchmarks - Geekbench Browser
C
cpubenchmark.net
01/04/2021
Summary of the review
Intel Xeon W-11855M @ 3.20GHz - CPU Benchmarks
L
laptopmedia.com
11/05/2021
Summary of the review
Intel Xeon W-11855M - LaptopMedia
L
labonneconfig.fr
01/05/2021
Summary of the review
Intel Xeon W-11855M Benchmark: Scores and Performance
(Translated)Show original
L
laptopmedia.com
11/05/2021
Summary of the review
Intel Xeon W-11855M - Specifications, Benchmarks and Comparisons
(Translated)Show original
R
ratake.com
11/05/2021
Summary of the review
Intel Xeon W-11855M - Processor - Overview
(Translated)Show original
L
laptopmedia.com
01/06/2022
Summary of the review
Lenovo ThinkPad T15g Gen 2: clinical trial (Tests including the Xeon W-11855M)
(Translated)Show original
L
laptopmedia.com
09/05/2022
Summary of the review
Dell Precision 15 7560 Review – Built for Work
(Translated)Show original
L
laptopmedia.com
14/12/2022
Summary of the review
Intel Xeon W-11855M - Specs, Benchmark Tests, Prices and CPU Comparisons
(Translated)Show original
L
laptopmedia.com
06/10/2021
Summary of the review
Dell Precision 15 3561 review – cooling can make the difference
(Translated)Show original
L
laptopmedia.com
30/10/2021
Summary of the review
Lenovo ThinkPad P15 Gen 2 Review – Featuring Intel Xeon W-11855M Benchmarks
(Translated)Show original
N
notebookcheck.nl
05/10/2021
Summary of the review
Lenovo ThinkPad P17 G2 Laptop Review: Massive workstation with internal upgrades
(Translated)Show original

Video reviews

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