Ryzen 7 8840HS vs Ryzen 5 8645HS

VS

Aggregate performance score

Ryzen 5 8645HS
2023
6 cores / 12 threads, 45 Watt
14.47
Ryzen 7 8840HS
2023
8 cores / 16 threads, 28 Watt
15.23
+5.3%

Ryzen 7 8840HS outperforms Ryzen 5 8645HS by a small 5% based on our aggregate benchmark results.

Primary details

Comparing Ryzen 5 8645HS and Ryzen 7 8840HS processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking499461
Place by popularitynot in top-100not in top-100
Market segmentLaptopLaptop
Power efficiency30.4351.48
Architecture codenameHawk Point-HS (Zen 4) (2023−2024)Hawk Point-HS (Zen 4) (2023−2024)
Release date6 December 2023 (1 year ago)6 December 2023 (1 year ago)

Detailed specifications

Ryzen 5 8645HS and Ryzen 7 8840HS 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 cores6 (Hexa-Core)8 (Octa-Core)
Threads1216
Base clock speed4.3 GHz3.3 GHz
Boost clock speed5 GHz5.1 GHz
L1 cache64 KB (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++

Compatibility

Information on Ryzen 5 8645HS and Ryzen 7 8840HS 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)45 Watt28 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 5 8645HS and Ryzen 7 8840HS. You'll probably need this information if you require some particular technology.

Instruction set extensionsRyzen AI, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSE4.1, SSE4.2, SSE4A, SSSE3Ryzen AI, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSE4.1, SSE4.2, SSE4A, SSSE3
AES-NI++
AVX++
Precision Boost 2++

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 5 8645HS and Ryzen 7 8840HS are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 5 8645HS and Ryzen 7 8840HS. 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 760M ( - 2600 MHz)AMD Radeon 780M ( - 2700 MHz)

Peripherals

Specifications and connection of peripherals supported by Ryzen 5 8645HS and Ryzen 7 8840HS.

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 5 8645HS 14.47
Ryzen 7 8840HS 15.23
+5.3%

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 5 8645HS 22985
Ryzen 7 8840HS 24195
+5.3%

Cinebench 15 64-bit multi-core

Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.

Ryzen 5 8645HS 2094
+2.4%
Ryzen 7 8840HS 2045

Cinebench 15 64-bit single-core

Cinebench R15 (standing for Release 15) is a benchmark made by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version (sometimes called Single-Thread) only uses a single processor thread to render a room full of reflective spheres and light sources.

Ryzen 5 8645HS 270
+0.7%
Ryzen 7 8840HS 268

Geekbench 5.5 Multi-Core

Ryzen 5 8645HS 9420
Ryzen 7 8840HS 9949
+5.6%

Blender(-)

Ryzen 5 8645HS 241
+3.9%
Ryzen 7 8840HS 232

Geekbench 5.5 Single-Core

Ryzen 5 8645HS 1915
Ryzen 7 8840HS 1942
+1.4%

7-Zip Single

Ryzen 5 8645HS 6190
Ryzen 7 8840HS 6205
+0.2%

7-Zip

Ryzen 5 8645HS 55608
Ryzen 7 8840HS 60670
+9.1%

WebXPRT 3

Ryzen 5 8645HS 295
Ryzen 7 8840HS 308
+4.4%

CrossMark Overall

Ryzen 5 8645HS 1765
+6.5%
Ryzen 7 8840HS 1658

WebXPRT 4 Overall

Ryzen 5 8645HS 248
Ryzen 7 8840HS 248

Blender v3.3 Classroom CPU(-)

Ryzen 5 8645HS 389
+3.7%
Ryzen 7 8840HS 375

Geekbench 6.3 Multi-Core

Ryzen 5 8645HS 10882
Ryzen 7 8840HS 11327
+4.1%

Geekbench 6.3 Single-Core

Ryzen 5 8645HS 2570
+0.7%
Ryzen 7 8840HS 2552

Gaming performance

Pros & cons summary


Performance score 14.47 15.23
Integrated graphics card 14.90 18.32
Physical cores 6 8
Threads 12 16
Power consumption (TDP) 45 Watt 28 Watt

Ryzen 7 8840HS has a 5.3% higher aggregate performance score, 23% faster integrated GPU, 33.3% more physical cores and 33.3% more threads, and 60.7% lower power consumption.

Given the minimal performance differences, no clear winner can be declared between Ryzen 5 8645HS and Ryzen 7 8840HS.


Should you still have questions on choice between Ryzen 5 8645HS and Ryzen 7 8840HS, ask them in Comments section, and we shall answer.

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AMD Ryzen 5 8645HS
Ryzen 5 8645HS
AMD Ryzen 7 8840HS
Ryzen 7 8840HS

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Community ratings

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