Ryzen 5 8645HS vs Ryzen 3 8440U

VS

Aggregate performance score

Ryzen 3 8440U
2023
4 cores / 8 threads, 28 Watt
8.06
Ryzen 5 8645HS
2023
6 cores / 12 threads, 45 Watt
14.47
+79.5%

Ryzen 5 8645HS outperforms Ryzen 3 8440U by an impressive 80% based on our aggregate benchmark results.

Primary details

Comparing Ryzen 3 8440U and Ryzen 5 8645HS processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking939498
Place by popularitynot in top-100not in top-100
Market segmentLaptopLaptop
Power efficiency27.2230.41
Architecture codenameHawk Point-U (Zen 4 + Zen 4c) (2023)Hawk Point-HS (Zen 4) (2023−2024)
Release date6 December 2023 (1 year ago)6 December 2023 (1 year ago)

Detailed specifications

Ryzen 3 8440U 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 cores4 (Quad-Core)6 (Hexa-Core)
Threads812
Base clock speed3 GHz4.3 GHz
Boost clock speed4.7 GHz5 GHz
L1 cache64 KB (per core)64 KB (per core)
L2 cache1 MB (per core)1 MB (per core)
L3 cache8 MB (shared)16 MB (shared)
Chip lithography4 nm4 nm
Die size137 mm2178 mm2
Maximum core temperature100 °C100 °C
Number of transistors20,900 million25,000 million
64 bit support++

Compatibility

Information on Ryzen 3 8440U 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 configuration11
SocketFP7FP8
Power consumption (TDP)28 Watt45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 3 8440U and Ryzen 5 8645HS. You'll probably need this information if you require some particular technology.

Instruction set extensionsAES, 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 3 8440U and Ryzen 5 8645HS are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 3 8440U and Ryzen 5 8645HS. 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 740M ( - 2500 MHz)AMD Radeon 760M ( - 2600 MHz)

Peripherals

Specifications and connection of peripherals supported by Ryzen 3 8440U and Ryzen 5 8645HS.

PCIe version4.04.0
PCI Express lanes1420

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 3 8440U 8.06
Ryzen 5 8645HS 14.47
+79.5%

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 3 8440U 12805
Ryzen 5 8645HS 22980
+79.5%

Gaming performance

Pros & cons summary


Performance score 8.06 14.47
Integrated graphics card 8.29 14.91
Physical cores 4 6
Threads 8 12
Power consumption (TDP) 28 Watt 45 Watt

Ryzen 3 8440U has 60.7% lower power consumption.

Ryzen 5 8645HS, on the other hand, has a 79.5% higher aggregate performance score, 79.9% faster integrated GPU, and 50% more physical cores and 50% more threads.

The Ryzen 5 8645HS is our recommended choice as it beats the Ryzen 3 8440U in performance tests.


Should you still have questions on choice between Ryzen 3 8440U and Ryzen 5 8645HS, ask them in Comments section, and we shall answer.

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AMD Ryzen 3 8440U
Ryzen 3 8440U
AMD Ryzen 5 8645HS
Ryzen 5 8645HS

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Community ratings

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Questions & comments

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