Ryzen 5 8640HS vs Ryzen 9 7945HX

Aggregate performance score

Ryzen 9 7945HX
2023
16 cores / 32 threads, 55 Watt
35.68
+180%

Ryzen 9 7945HX outperforms Ryzen 5 8640HS by a whopping 180% based on our aggregate benchmark results.

Primary details

Comparing Ryzen 9 7945HX and Ryzen 5 8640HS processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking109618
Place by popularitynot in top-100not in top-100
Market segmentLaptopLaptop
Power efficiency59.1541.52
Architecture codenameDragon Range-HX (Zen 4) (2023−2024)Hawk Point-HS (Zen 4) (2023−2024)
Release date4 January 2023 (1 year ago)6 December 2023 (less than a year ago)

Detailed specifications

Ryzen 9 7945HX and Ryzen 5 8640HS 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 cores16 (Hexadeca-Core)6 (Hexa-Core)
Threads3212
Base clock speed2.5 GHz3.5 GHz
Boost clock speed5.4 GHz4.9 GHz
L1 cache64K (per core)64 KB (per core)
L2 cache1 MB (per core)1 MB (per core)
L3 cache64 MB (shared)16 MB (shared)
Chip lithographyCCD = 5 nm, I/O = 6 nm4 nm
Die size2x 71 mm2178 mm2
Maximum core temperature100 °C100 °C
Number of transistors13,140 million25,000 million
64 bit support++
Windows 11 compatibility+no data
Unlocked multiplier+-

Compatibility

Information on Ryzen 9 7945HX and Ryzen 5 8640HS 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
SocketFL1FP8
Power consumption (TDP)55 Watt28 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 7945HX and Ryzen 5 8640HS. You'll probably need this information if you require some particular technology.

Instruction set extensionsMMX, 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 9 7945HX and Ryzen 5 8640HS are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 7945HX and Ryzen 5 8640HS. 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 610MAMD Radeon 760M

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 7945HX and Ryzen 5 8640HS.

PCIe version5.04.0
PCI Express lanes2820

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 7945HX 35.68
+180%
Ryzen 5 8640HS 12.75

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 7945HX 54603
+180%
Ryzen 5 8640HS 19513

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 9 7945HX 2735
+28.7%
Ryzen 5 8640HS 2125

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 9 7945HX 15895
+102%
Ryzen 5 8640HS 7852

Gaming performance

Pros & cons summary


Performance score 35.68 12.75
Integrated graphics card 2.85 14.99
Recency 4 January 2023 6 December 2023
Physical cores 16 6
Threads 32 12
Power consumption (TDP) 55 Watt 28 Watt

Ryzen 9 7945HX has a 179.8% higher aggregate performance score, and 166.7% more physical cores and 166.7% more threads.

Ryzen 5 8640HS, on the other hand, has 426% faster integrated GPU, an age advantage of 11 months, and 96.4% lower power consumption.

The Ryzen 9 7945HX is our recommended choice as it beats the Ryzen 5 8640HS in performance tests.


Should you still have questions on choice between Ryzen 9 7945HX and Ryzen 5 8640HS, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


AMD Ryzen 9 7945HX
Ryzen 9 7945HX
AMD Ryzen 5 8640HS
Ryzen 5 8640HS

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

Community ratings

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


4.6 616 votes

Rate Ryzen 9 7945HX on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
4.4 19 votes

Rate Ryzen 5 8640HS on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about Ryzen 9 7945HX or Ryzen 5 8640HS, agree or disagree with our judgements, or report an error or mismatch.