Ryzen 5 8640U vs Ryzen 7 7840HS

VS

Aggregate performance score

Ryzen 7 7840HS
2023
8 cores / 16 threads, 35 Watt
18.20
+37.5%
Ryzen 5 8640U
2023
6 cores / 12 threads, 28 Watt
13.24

Ryzen 7 7840HS outperforms Ryzen 5 8640U by a substantial 37% based on our aggregate benchmark results.

Primary details

Comparing Ryzen 7 7840HS and Ryzen 5 8640U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking333570
Place by popularitynot in top-100not in top-100
Market segmentLaptopLaptop
Power efficiency49.2144.75
Architecture codenamePhoenix-HS (Zen 4) (2023)Hawk Point-U (Zen 4) (2023)
Release dateJanuary 2023 (1 year ago)6 December 2023 (1 year ago)

Detailed specifications

Ryzen 7 7840HS and Ryzen 5 8640U basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores8 (Octa-Core)6 (Hexa-Core)
Threads1612
Base clock speed3.8 GHz3.5 GHz
Boost clock speed5.1 GHz4.9 GHz
L1 cache64K (per core)64 KB (per core)
L2 cache1 MB (per core)1 MB (per core)
L3 cache16 MB (shared)16 MB (shared)
Chip lithography4 nm4 nm
Die size178 mm2178 mm2
Maximum core temperature100 °C100 °C
Number of transistors25,000 million25,000 million
64 bit support++
Windows 11 compatibility+no data

Compatibility

Information on Ryzen 7 7840HS and Ryzen 5 8640U compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration11
SocketFP8FP8
Power consumption (TDP)35 Watt28 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 7 7840HS and Ryzen 5 8640U. You'll probably need this information if you require some particular technology.

Instruction set extensionsRyzen AI, MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SMERyzen AI, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSE4.1, SSE4.2, SSE4A, SSSE3
AES-NI++
FMA+-
AVX++
Precision Boost 2++

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 7 7840HS and Ryzen 5 8640U are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 7 7840HS and Ryzen 5 8640U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR5DDR5

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card
Compare
AMD Radeon 780M ( - 2700 MHz)AMD Radeon 760M ( - 2600 MHz)

Peripherals

Specifications and connection of peripherals supported by Ryzen 7 7840HS and Ryzen 5 8640U.

PCIe version4.04.0
PCI Express lanes2020

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.


Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Ryzen 7 7840HS 18.20
+37.5%
Ryzen 5 8640U 13.24

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Ryzen 7 7840HS 28912
+37.5%
Ryzen 5 8640U 21025

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Ryzen 7 7840HS 2367
+6.3%
Ryzen 5 8640U 2227

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Ryzen 7 7840HS 11009
+30.5%
Ryzen 5 8640U 8438

Gaming performance

Pros & cons summary


Performance score 18.20 13.24
Integrated graphics card 18.32 14.90
Physical cores 8 6
Threads 16 12
Power consumption (TDP) 35 Watt 28 Watt

Ryzen 7 7840HS has a 37.5% higher aggregate performance score, 23% faster integrated GPU, and 33.3% more physical cores and 33.3% more threads.

Ryzen 5 8640U, on the other hand, has 25% lower power consumption.

The Ryzen 7 7840HS is our recommended choice as it beats the Ryzen 5 8640U in performance tests.


Should you still have questions on choice between Ryzen 7 7840HS and Ryzen 5 8640U, ask them in Comments section, and we shall answer.

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AMD Ryzen 7 7840HS
Ryzen 7 7840HS
AMD Ryzen 5 8640U
Ryzen 5 8640U

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Community ratings

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Questions & comments

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