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AMD Ryzen 7 7840S Review | 78 Data compared

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  • Avg. price in UK: ~£1,260
  • Avg. price in US: ~$1,100
  • PassMark benchmark result: 23290
  • N. of physical cores: 8
  • CPU boost clock speed: 5.1 GHz

AMD Ryzen 7 7840S review. Compare 78 technical specifications and user reviews to see how it ranks among processors and if it is worth buying.

6.7

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%

6.7

Technical Score

10.0%

?

User score

Good
6.7

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%

6.1

Performance

18.0%

7.3

Cache & Architecture

10.0%

7.8

Memory & PCIe

7.0%

6.9

Power & Thermal

4.0%

8.5

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

  • 6.6
    Gaming

    Score components:

    30.0%

    6.6

    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%

    3.3

    L3 cache

    8.0%

    3.5

    N. of physical cores

  • 4.1
    Video editing

    Score components:

    45.0%

    4.3

    Geekbench 6 multi-core benchmark score

    20.0%

    3.5

    N. of physical cores

    20.0%

    5.2

    CPU threads

    15.0%

    3.3

    L3 cache

  • No image
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Best prices in UK

    N/A~ £1,260

Best rankings

?

Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The AMD Ryzen 7 7840S is a high-performance laptop processor based on the 4nm Zen 4 architecture, featuring 8 cores and 16 threads with a base clock of 3.8 GHz and a max boost of 5.1 GHz. Key characteristics include 16 MB of L3 cache, a configurable TDP typically ranging from 30W to 54W, and the integrated Radeon 780M RDNA 3 graphics core running up to 2.7 GHz. Its main pros are exceptional power efficiency for its performance class, support for high-speed LPDDR5x-7500 RAM, and a dedicated Ryzen AI engine for hardware-accelerated machine learning tasks. Cons include its limited availability as a Lenovo-exclusive part, being soldered to the motherboard which prevents future upgrades, and a performance ceiling slightly below its higher-wattage HS-series counterparts due to stricter power management.

Technical Specifications of processor AMD Ryzen 7 7840S

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

6.7
AMD Ryzen 7 7840S has a technical score of 6.67 points, which is higher than that of 77.4% 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
AMD Ryzen 7 7840S 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%

6.7

Overall score

40.0%

3.9

Price

5.8
AMD Ryzen 7 7840S has a quality-to-price ratio of 5.8 points, which is lower than 73.6% of products in this category.
Brand name
What it is: The manufacturer or brand of the product.
When it matters: When you prefer a specific ecosystem, support network, or design philosophy.

Importance: MEDIUM

AMD
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
AMD Ryzen 7 7840S 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

?
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
AMD Ryzen 7 7840S 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.
Show more
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+

8
AMD Ryzen 7 7840S has 8 CPU cores, which is more than 63.4% of processors and equal to 13.6% 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
AMD Ryzen 7 7840S 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

2
AMD Ryzen 7 7840S 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

5.1 GHz
AMD Ryzen 7 7840S 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

8 x 3.8 GHz
AMD Ryzen 7 7840S has a base clock of 8x3.8 GHz which is equal to that of 100% of processors.
Show more
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

4 nm
AMD Ryzen 7 7840S uses a 4 nm process node, which is more advanced than that of 88.4% of processors and equal to that of 7.5% 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 4 nm
AMD Ryzen 7 7840S is built on the TSMC 4 nm foundry process, which is more advanced than that of 87% of processors and equal to that of 7.5% 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

16 MB
AMD Ryzen 7 7840S has an L3 cache of 16 MB which is larger than that of 64.2% of processors and equal to that of 12.7% of processors.
L2 cache
What it is: The total amount of L2 cache available across the processor.
When it matters: When you want to compare CPU design efficiency and how much fast intermediate cache the cores have available.

Importance: MEDIUM

Good value: >=6 MB

8 MB
AMD Ryzen 7 7840S has an L2 cache of 8 MB which is larger than that of 73.5% of processors and equal to that of 4.3% 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

512 KB
AMD Ryzen 7 7840S has an L1 cache of 512 KB which is larger than that of 63.6% of processors and equal to that of 9.5% of processors.
Show more
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
AMD Ryzen 7 7840S 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

5,600 MHz
AMD Ryzen 7 7840S supports memory speeds up to 5600 MHz, which is higher than that of 79.8% of processors and equal to 4% of processors.
Max memory speed (JEDEC)
What it is: The highest official RAM speed the processor supports under standard JEDEC settings, before any memory overclocking profiles are applied.
When it matters: When officially supported stock RAM speed matters more than XMP, EXPO, or manual memory tuning.

Importance: MEDIUM

Good value: >=5600 MHz

LPDDR5X-7500 MHz
AMD Ryzen 7 7840S supports JEDEC memory speeds up to LPDDR5X-7500 MHz, which is higher than that of 94.2% of processors and equal to 3.1% 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

256 GB
AMD Ryzen 7 7840S supports up to 256 GB of memory, which is more than 89.4% of processors and equal to 8.3% of processors.
Show more
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
AMD Ryzen 7 7840S includes integrated graphics. 87.6% of processors include integrated graphics.
AMD Radeon 780M
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

Radeon 780M
AMD Ryzen 7 7840S uses the Radeon 780M integrated GPU, which is more advanced than that in 95.8% of processors and equal to that in 1.9% 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

12
AMD Ryzen 7 7840S has 12 GPU execution units, which is fewer than 62.8% of processors and equal to 9.2% 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

800 MHz
AMD Ryzen 7 7840S has an integrated GPU clock of 800 MHz which is higher than that of 90.8% of processors and equal to that of 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), AV1 (HW decode/encode)
AMD Ryzen 7 7840S supports H.264 (HW decode/encode), H.265 (HW decode/encode), VP9 (HW decode), AV1 (HW decode/encode) media codecs, which is broader support than 90.7% of processors and equal to 3.4% of processors.
Show more
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

35 W
AMD Ryzen 7 7840S has a TDP of 35 W which is lower than that of 51.8% of processors and equal to that of 14.8% 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

35 W
AMD Ryzen 7 7840S has a base power of 35 W which is lower than that of 51.7% of processors and equal to that of 15.1% 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

?
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

N/A
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
AMD Ryzen 7 7840S supports configurable TDP. 52.9% of processors support configurable TDP.
cTDP: 35-45 W
Show more

AMD Ryzen 7 7840S vs the average processor

  • 18.6% higher boost clock
    AMD Ryzen 7 7840S 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

    AMD Ryzen 7 7840S 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
  • 43% better single-core performance
    AMD Ryzen 7 7840S has a higher PassMark single-core score than the average processor (3,550 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

    AMD Ryzen 7 7840S has a higher PassMark single-core score than the average processor (3,550 vs 2,483). The average processor scores 2,483 in PassMark single-core.3,550 vs 2,483
  • More advanced microarchitecture
    AMD Ryzen 7 7840S uses a more advanced microarchitecture than the average processor (Phoenix 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

    AMD Ryzen 7 7840S uses a more advanced microarchitecture than the average processor (Phoenix vs Kaby Lake).Phoenix vs Kaby Lake
  • Newer DDR support
    AMD Ryzen 7 7840S 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

    AMD Ryzen 7 7840S supports a newer DDR generation than the average processor (DDR5/LPDDR5/LPDDR5X vs DDR4).DDR5/LPDDR5/LPDDR5X vs DDR4
  • 4x more memory capacity
    AMD Ryzen 7 7840S has more maximum memory capacity than the average processor (256 GB vs 64 GB). The average processor supports 64 GB of memory.
    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

    AMD Ryzen 7 7840S has more maximum memory capacity than the average processor (256 GB vs 64 GB). The average processor supports 64 GB of memory.256 GB vs 64 GB
  • 2.21x higher PassMark score
    AMD Ryzen 7 7840S has a higher PassMark benchmark score than the average processor (23,290 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

    AMD Ryzen 7 7840S has a higher PassMark benchmark score than the average processor (23,290 vs 10,532.5). The average processor scores 10,532.5 in PassMark benchmark.23,290 vs 10,532.5
  • 66.7% smaller process node
    AMD Ryzen 7 7840S has a lower process node than the average processor (4 nm vs 12 nm). The average processor uses a process node of 12 nm.
    What it is: The manufacturing process node used to produce the processor, usually expressed in nanometers.
    When it matters: When efficiency, heat, and the relative modernity of the chip-making process matter to your comparison.

    Importance: HIGH

    Good value: <10 nm

    AMD Ryzen 7 7840S has a lower process node than the average processor (4 nm vs 12 nm). The average processor uses a process node of 12 nm.4 nm vs 12 nm
  • 8 more CPU threads
    AMD Ryzen 7 7840S has more CPU threads than the average processor (16 vs 8). The average processor has 8 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+

    AMD Ryzen 7 7840S has more CPU threads than the average processor (16 vs 8). The average processor has 8 CPU threads.16 vs 8
  • 3 year/s newer release date
    AMD Ryzen 7 7840S has a newer release date than the average processor (2,023 vs 2,020).
  • 18.6% higher boost clock
    AMD Ryzen 7 7840S 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.
  • 43% better single-core performance
    AMD Ryzen 7 7840S has a higher PassMark single-core score than the average processor (3,550 vs 2,483). The average processor scores 2,483 in PassMark single-core.
  • 2.21x higher PassMark score
    AMD Ryzen 7 7840S has a higher PassMark benchmark score than the average processor (23,290 vs 10,532.5). The average processor scores 10,532.5 in PassMark benchmark.
  • 8 more CPU threads
    AMD Ryzen 7 7840S has more CPU threads than the average processor (16 vs 8). The average processor has 8 CPU threads.
  • 80.6% higher multi-core score
    AMD Ryzen 7 7840S has a higher Geekbench 6 multi-core score than the average processor (8,658 vs 4,793). The average processor scores 4,793 in Geekbench 6 multi-core.
  • 2 more CPU cores
    AMD Ryzen 7 7840S has more CPU cores than the average processor (8 vs 6). The average processor has 6 CPU cores.
  • 10 higher clock multiplier
    AMD Ryzen 7 7840S has a higher clock multiplier than the average processor (38 vs 28). The average processor has a clock multiplier of 28.
  • More advanced microarchitecture
    AMD Ryzen 7 7840S uses a more advanced microarchitecture than the average processor (Phoenix vs Kaby Lake).
  • 66.7% smaller process node
    AMD Ryzen 7 7840S has a lower process node than the average processor (4 nm vs 12 nm). The average processor uses a process node of 12 nm.
  • 3.2x larger L2 cache
    AMD Ryzen 7 7840S has a higher L2 cache than the average processor (8 MB vs 2.5 MB). The average processor has L2 cache of 2.5 MB.
  • More advanced foundry
    AMD Ryzen 7 7840S uses a more advanced foundry process than the average processor (TSMC 4 nm vs Intel 14 nm).
  • 2x more L2 per core
    AMD Ryzen 7 7840S has more L2 cache per core than the average processor (1 MB/core vs 0.5 MB/core). The average processor provides 0.5 MB/core of L2 cache per core.
  • 5.05x more transistors
    AMD Ryzen 7 7840S has more transistors than the average processor (25 billion vs 4.95 billion). The average processor has 4.95 billion transistors.
  • 2x larger L3 cache
    AMD Ryzen 7 7840S has a higher L3 cache than the average processor (16 MB vs 8 MB). The average processor has L3 cache of 8 MB.
  • 16.7% more L3 per core
    AMD Ryzen 7 7840S has more L3 cache per core than the average processor (2 MB/core vs 1.714 MB/core). The average processor provides 1.714 MB/core of L3 cache per core.
  • 33.3% larger L1 cache
    AMD Ryzen 7 7840S has a higher L1 cache than the average processor (512 KB vs 384 KB). The average processor has L1 cache of 384 KB.
  • Newer DDR support
    AMD Ryzen 7 7840S supports a newer DDR generation than the average processor (DDR5/LPDDR5/LPDDR5X vs DDR4).
  • 4x more memory capacity
    AMD Ryzen 7 7840S has more maximum memory capacity than the average processor (256 GB vs 64 GB). The average processor supports 64 GB of memory.
  • Newer PCIe version
    AMD Ryzen 7 7840S supports a newer PCIe version than the average processor (4 vs 3.0).
  • 90.9% higher memory speed
    AMD Ryzen 7 7840S has a higher maximum memory speed than the average processor (5,600 MHz vs 2,933 MHz). The average processor supports memory speed of 2,933 MHz.
  • 4 more PCIe lanes
    AMD Ryzen 7 7840S has more PCIe lanes than the average processor (20 vs 16). The average processor offers 16 PCIe lanes.
  • Better integrated GPU
    AMD Ryzen 7 7840S uses a better integrated GPU than the average processor (Radeon 780M vs Intel UHD Graphics 630).
  • 2.29x higher GPU clock speed
    AMD Ryzen 7 7840S has a higher integrated GPU frequency than the average processor (800 MHz vs 350 MHz). The average processor has integrated GPU frequency of 350 MHz.
  • 1 more supported displays
    AMD Ryzen 7 7840S has more supported displays than the average processor (4 vs 3). The average processor supports 3 displays.
  • 22.2% lower base power
    AMD Ryzen 7 7840S has a lower base power draw than the average processor (35 W vs 45 W). The average processor has a base power draw of 45 W.

Total
Platform
Performance
Cache & Architecture
Memory & PCIe
Integrated Graphics
Power & Thermal
  • Older TPM support
    AMD Ryzen 7 7840S supports an older TPM version than the average processor (fTPM 2.0 vs PTT 2.0).
  • 50% fewer GPU execution units
    AMD Ryzen 7 7840S has fewer GPU execution units than the average processor (12 vs 24). The average processor has 24 GPU execution units.
  • 5.04x more expensive
    AMD Ryzen 7 7840S is more expensive than the average processor (£1,260 vs £250).
    AMD Ryzen 7 7840S is more expensive than the average processor (£1,260 vs £250).£1,260 vs £250
  • 9.3% worse value for money
    AMD Ryzen 7 7840S has worse value for money than the average processor (5.82 vs 6.367).
    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.
    AMD Ryzen 7 7840S has worse value for money than the average processor (5.82 vs 6.367).5.82 vs 6.37
  • Older TPM support
    AMD Ryzen 7 7840S supports an older TPM version than the average processor (fTPM 2.0 vs PTT 2.0).
    What it is: The kind of TPM security support associated with the processor or its platform.
    When it matters: When operating-system requirements, device encryption, enterprise security, or platform trust features matter.

    Importance: LOW

    AMD Ryzen 7 7840S supports an older TPM version than the average processor (fTPM 2.0 vs PTT 2.0).fTPM 2.0 vs PTT 2.0
  • 50% fewer GPU execution units
    AMD Ryzen 7 7840S has fewer GPU execution units than the average processor (12 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

    AMD Ryzen 7 7840S has fewer GPU execution units than the average processor (12 vs 24). The average processor has 24 GPU execution units.12 vs 24
Total
Overall
Platform
Integrated Graphics

Graphic comparison of AMD Ryzen 7 7840S and other processors

Attribute category
Attribute
No results found

Third-party reviews

What customers like about AMD Ryzen 7 7840S?

  • High multi-threaded performance suitable for productivity and light content creation
  • Excellent integrated Radeon 780M graphics, capable of handling modern games at 1080p
  • Strong power efficiency (30W-45W range), ideal for thin and light ultrabooks
  • Includes dedicated Ryzen AI hardware (XDNA) for accelerating AI-based tasks
  • Support for high-speed LPDDR5x-7500 memory for improved system responsiveness

What customers dislike about AMD Ryzen 7 7840S?

  • Exclusively available in select Lenovo laptop models, limiting consumer choice
  • Slightly lower clock speeds and peak performance compared to the more common 7840HS variant
  • Single-core performance can still lag behind high-end Intel equivalents in specific tasks
  • Performance is highly dependent on the laptop's specific cooling solution and power limits
  • Occasional software compatibility issues reported with specific tools like older Android emulators

Expert reviews

C
cpubenchmark.net
Q3 2023
AMD Ryzen 7 7840S vs Ryzen 7 7840HS - CPU Benchmarks Would you like a comparison of the performance differences between this "S" model and the standar...

The AMD Ryzen 7 7840HS outperforms the 7840S in multi-threaded tasks by roughly 18-20%, making it the better choice for high-performance workloads, despite both sharing 8 cores and 5.1 GHz boost clocks. Pros for the 7840HS include ECC memory support and a faster base GPU clock, whereas the 7840S is designed for power-constrained, thin-and-light systems. While the 7840S offers...Read more

C
cpubenchmark.net
Q3 2023
AMD Ryzen 7 7840S - CPU Benchmarks

The AMD Ryzen 7 7840S is a high-performance, octa-core "Phoenix" laptop processor featuring Zen 4 architecture, primarily used in premium, thin-and-light Lenovo laptops. Operating at 3.8 GHz to 5.1 GHz with a 35W-45W TDP, this specialized chip is designed for efficiency and high performance in compact designs. Key advantages include excellent power efficiency, the potent Radeon 780M...Read more

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