Ryzen 5 8645HS vs Athlon II X4 651K

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Primary details

Comparing Athlon II X4 651K and Ryzen 5 8645HS processor market type (desktop or notebook), architecture, sales start time and price.

Place in the rankingnot rated498
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorLaptop
Power efficiencyno data30.41
Architecture codenameLlano (2011−2012)Hawk Point-HS (Zen 4) (2023−2024)
Release date14 November 2011 (13 years ago)6 December 2023 (1 year ago)

Detailed specifications

Athlon II X4 651K 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)
Threads412
Base clock speed3 GHz4.3 GHz
Boost clock speed3 GHz5 GHz
L1 cache128 KB (per core)64 KB (per core)
L2 cache1 MB (per core)1 MB (per core)
L3 cache0 KB16 MB (shared)
Chip lithography32 nm4 nm
Die size228 mm2178 mm2
Maximum core temperatureno data100 °C
Number of transistors1,178 million25,000 million
64 bit support++
Windows 11 compatibility-no data

Compatibility

Information on Athlon II X4 651K 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
SocketFM1FP8
Power consumption (TDP)100 Watt45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Athlon II X4 651K 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 Athlon II X4 651K and Ryzen 5 8645HS are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon II X4 651K and Ryzen 5 8645HS. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR5

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataAMD Radeon 760M ( - 2600 MHz)

Peripherals

Specifications and connection of peripherals supported by Athlon II X4 651K and Ryzen 5 8645HS.

PCIe versionno data4.0
PCI Express lanesno data20

Pros & cons summary


Recency 14 November 2011 6 December 2023
Physical cores 4 6
Threads 4 12
Chip lithography 32 nm 4 nm
Power consumption (TDP) 100 Watt 45 Watt

Ryzen 5 8645HS has an age advantage of 12 years, 50% more physical cores and 200% more threads, a 700% more advanced lithography process, and 122.2% lower power consumption.

We couldn't decide between Athlon II X4 651K and Ryzen 5 8645HS. We've got no test results to judge.

Note that Athlon II X4 651K is a desktop processor while Ryzen 5 8645HS is a notebook one.


Should you still have questions on choice between Athlon II X4 651K and Ryzen 5 8645HS, ask them in Comments section, and we shall answer.

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AMD Athlon II X4 651K
Athlon II X4 651K
AMD Ryzen 5 8645HS
Ryzen 5 8645HS

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Community ratings

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3.6 32 votes

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4.1 178 votes

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