Ryzen 5 8645HS vs Ryzen 9 PRO 7940HS

VS

Aggregate performance score

Ryzen 9 PRO 7940HS
2023
8 cores / 16 threads, 35 Watt
17.59
+22.7%
Ryzen 5 8645HS
2023
6 cores / 12 threads, 45 Watt
14.33

Ryzen 9 PRO 7940HS outperforms Ryzen 5 8645HS by a significant 23% based on our aggregate benchmark results.

Primary details

Comparing Ryzen 9 PRO 7940HS and Ryzen 5 8645HS processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking350498
Place by popularitynot in top-100not in top-100
Market segmentLaptopLaptop
SeriesAMD Phoenix (Zen 4, Ryzen 7040)no data
Power efficiency47.8330.31
Architecture codenamePhoenix-HS (Zen 4) (2023)Hawk Point-HS (Zen 4) (2023−2024)
Release date13 June 2023 (1 year ago)6 December 2023 (1 year ago)

Detailed specifications

Ryzen 9 PRO 7940HS and Ryzen 5 8645HS 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 speed4 GHz4.3 GHz
Boost clock speed5.2 GHz5 GHz
L1 cache512 KB64 KB (per core)
L2 cache8 MB1 MB (per core)
L3 cache16 MB16 MB (shared)
Chip lithography4 nm4 nm
Die size178 mm2178 mm2
Maximum core temperature100 °C100 °C
Number of transistorsno data25,000 million
64 bit support++

Compatibility

Information on Ryzen 9 PRO 7940HS and Ryzen 5 8645HS 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 configurationno data1
SocketFP7/FP8FP8
Power consumption (TDP)35 Watt45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 PRO 7940HS and Ryzen 5 8645HS. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataRyzen AI, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSE4.1, SSE4.2, SSE4A, SSSE3
AES-NI-+
AVX-+
Precision Boost 2no data+

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 PRO 7940HS and Ryzen 5 8645HS are enumerated here.

AMD-V-+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 PRO 7940HS and Ryzen 5 8645HS. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesno dataDDR5

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card
Compare
AMD Radeon 780M ( - 2800 MHz)AMD Radeon 760M ( - 2600 MHz)

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 PRO 7940HS and Ryzen 5 8645HS.

PCIe versionno data4.0
PCI Express lanesno data20

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 9 PRO 7940HS 17.59
+22.7%
Ryzen 5 8645HS 14.33

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 9 PRO 7940HS 28175
+22.7%
Ryzen 5 8645HS 22957

Cinebench 15 64-bit multi-core

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

Ryzen 9 PRO 7940HS 2360
+12.7%
Ryzen 5 8645HS 2094

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 9 PRO 7940HS 275
+1.9%
Ryzen 5 8645HS 270

Geekbench 5.5 Multi-Core

Ryzen 9 PRO 7940HS 9959
+5.7%
Ryzen 5 8645HS 9420

Blender(-)

Ryzen 9 PRO 7940HS 214
Ryzen 5 8645HS 241
+12.6%

Geekbench 5.5 Single-Core

Ryzen 9 PRO 7940HS 1956
+2.1%
Ryzen 5 8645HS 1915

7-Zip Single

Ryzen 9 PRO 7940HS 6215
+0.4%
Ryzen 5 8645HS 6190

7-Zip

Ryzen 9 PRO 7940HS 61303
+10.2%
Ryzen 5 8645HS 55608

WebXPRT 3

Ryzen 9 PRO 7940HS 296
+0.3%
Ryzen 5 8645HS 295

CrossMark Overall

Ryzen 9 PRO 7940HS 1555
Ryzen 5 8645HS 1765
+13.5%

WebXPRT 4 Overall

Ryzen 9 PRO 7940HS 252
+1.6%
Ryzen 5 8645HS 248

Blender v3.3 Classroom CPU(-)

Ryzen 9 PRO 7940HS 343
Ryzen 5 8645HS 389
+13.4%

Geekbench 6.3 Multi-Core

Ryzen 9 PRO 7940HS 10348
Ryzen 5 8645HS 10882
+5.2%

Geekbench 6.3 Single-Core

Ryzen 9 PRO 7940HS 2605
+1.4%
Ryzen 5 8645HS 2570

Gaming performance

Pros & cons summary


Performance score 17.59 14.33
Integrated graphics card 18.32 14.86
Recency 13 June 2023 6 December 2023
Physical cores 8 6
Threads 16 12
Power consumption (TDP) 35 Watt 45 Watt

Ryzen 9 PRO 7940HS has a 22.7% higher aggregate performance score, 23.3% faster integrated GPU, 33.3% more physical cores and 33.3% more threads, and 28.6% lower power consumption.

Ryzen 5 8645HS, on the other hand, has an age advantage of 5 months.

The Ryzen 9 PRO 7940HS is our recommended choice as it beats the Ryzen 5 8645HS in performance tests.


Should you still have questions on choice between Ryzen 9 PRO 7940HS and Ryzen 5 8645HS, ask them in Comments section, and we shall answer.

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AMD Ryzen 9 PRO 7940HS
Ryzen 9 PRO 7940HS
AMD Ryzen 5 8645HS
Ryzen 5 8645HS

Other comparisons

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Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


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Questions & comments

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