Ryzen 5 PRO 8640U vs Ryzen 9 3900

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Primary details

Comparing Ryzen 9 3900 and Ryzen 5 PRO 8640U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking299not rated
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation20.74no data
Market segmentDesktop processorServer
SeriesAMD Matisse (Ryzen 3000 Desktop)no data
Power efficiency28.14no data
Architecture codenameMatisse (Zen 2) (2019−2020)Hawk Point (2024)
Release date24 September 2019 (5 years ago)16 April 2024 (less than a year ago)
Launch price (MSRP)$499no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Ryzen 9 3900 and Ryzen 5 PRO 8640U 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 cores12 (Dodeca-Core)6 (Hexa-Core)
Threads2412
Base clock speed3.1 GHz3.5 GHz
Boost clock speed4.3 GHz4.9 GHz
L1 cache64 KB (per core)64 KB (per core)
L2 cache512 KB (per core)1 MB (per core)
L3 cache64 MB16 MB (shared)
Chip lithography7 nm, 12 nm4 nm
Die size2x 74 mm2178 mm2
Number of transistors7,600 million25,000 million
64 bit support++
Windows 11 compatibility-no data
Unlocked multiplier+-

Compatibility

Information on Ryzen 9 3900 and Ryzen 5 PRO 8640U 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
SocketAM4FP7
Power consumption (TDP)65 Watt28 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 3900 and Ryzen 5 PRO 8640U. You'll probably need this information if you require some particular technology.

Instruction set extensions86x MMX(+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A,-64, AMD-V, AES, AVX, AVX2, FMA3, SHA, Precision Boost 2no data
AES-NI++
AVX++
Precision Boost 2++

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 3900 and Ryzen 5 PRO 8640U are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 3900 and Ryzen 5 PRO 8640U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4-3200DDR5
Maximum memory size128 GBno data
Max memory channels2no data
Maximum memory bandwidth51.196 GB/sno data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardN/AAMD Radeon 760M

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 3900 and Ryzen 5 PRO 8640U.

PCIe version4.04.0
PCI Express lanes2420

Pros & cons summary


Recency 24 September 2019 16 April 2024
Physical cores 12 6
Threads 24 12
Chip lithography 7 nm 4 nm
Power consumption (TDP) 65 Watt 28 Watt

Ryzen 9 3900 has 100% more physical cores and 100% more threads.

Ryzen 5 PRO 8640U, on the other hand, has an age advantage of 4 years, a 75% more advanced lithography process, and 132.1% lower power consumption.

We couldn't decide between Ryzen 9 3900 and Ryzen 5 PRO 8640U. We've got no test results to judge.

Note that Ryzen 9 3900 is a desktop processor while Ryzen 5 PRO 8640U is a server/workstation one.


Should you still have questions on choice between Ryzen 9 3900 and Ryzen 5 PRO 8640U, ask them in Comments section, and we shall answer.

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AMD Ryzen 9 3900
Ryzen 9 3900
AMD Ryzen 5 PRO 8640U
Ryzen 5 PRO 8640U

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Community ratings

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