Ryzen 5 PRO 8645HS vs EPYC 7551

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Primary details

Comparing EPYC 7551 and Ryzen 5 PRO 8645HS processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking400not rated
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation1.23no data
Market segmentServerServer
SeriesAMD EPYCno data
Power efficiency8.59no data
Architecture codenameNaples (2017−2018)Hawk Point (2024)
Release date29 June 2017 (7 years ago)16 April 2024 (less than a year ago)
Launch price (MSRP)$3,400no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

EPYC 7551 and Ryzen 5 PRO 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 cores32 (Dotriaconta-Core)6 (Hexa-Core)
Threads6412
Base clock speed2 GHz4.3 GHz
Boost clock speed3 GHz5 GHz
Multiplier20no data
L1 cache96K (per core)64 KB (per core)
L2 cache512K (per core)1 MB (per core)
L3 cache64 MB (shared)16 MB (shared)
Chip lithography14 nm4 nm
Die size192 mm2178 mm2
Number of transistors4,800 million25,000 million
64 bit support++
Windows 11 compatibility-no data
Unlocked multiplier+-

Compatibility

Information on EPYC 7551 and Ryzen 5 PRO 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 configuration2 (Multiprocessor)1
SocketTR4FP7
Power consumption (TDP)180 Watt45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7551 and Ryzen 5 PRO 8645HS. You'll probably need this information if you require some particular technology.

AES-NI++
AVX++
Precision Boost 2no data+

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7551 and Ryzen 5 PRO 8645HS are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7551 and Ryzen 5 PRO 8645HS. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4 Eight-channelDDR5
Maximum memory size2 TiBno data
Max memory channels8no data
Maximum memory bandwidth170.671 GB/sno data
ECC memory support+-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataAMD Radeon 760M

Peripherals

Specifications and connection of peripherals supported by EPYC 7551 and Ryzen 5 PRO 8645HS.

PCIe version3.04.0
PCI Express lanes12820

Pros & cons summary


Recency 29 June 2017 16 April 2024
Physical cores 32 6
Threads 64 12
Chip lithography 14 nm 4 nm
Power consumption (TDP) 180 Watt 45 Watt

EPYC 7551 has 433.3% more physical cores and 433.3% more threads.

Ryzen 5 PRO 8645HS, on the other hand, has an age advantage of 6 years, a 250% more advanced lithography process, and 300% lower power consumption.

We couldn't decide between EPYC 7551 and Ryzen 5 PRO 8645HS. We've got no test results to judge.


Should you still have questions on choice between EPYC 7551 and Ryzen 5 PRO 8645HS, ask them in Comments section, and we shall answer.

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AMD EPYC 7551
EPYC 7551
AMD Ryzen 5 PRO 8645HS
Ryzen 5 PRO 8645HS

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Community ratings

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4.9 10 votes

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