A9-9400 SoC vs EPYC 7451

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Primary details

Comparing EPYC 7451 and A9-9400 SoC processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking404not rated
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation1.74no data
Market segmentServerDesktop processor
SeriesAMD EPYCno data
Power efficiency8.56no data
Architecture codenameNaples (2017−2018)Stoney Ridge (2016−2019)
Release date20 June 2017 (7 years ago)31 May 2016 (8 years ago)
Launch price (MSRP)$2,400no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

EPYC 7451 and A9-9400 SoC 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 cores24 (Tetracosa-Core)2 (Dual-core)
Threads482
Base clock speed2.3 GHz2.4 GHz
Boost clock speed2.3 GHz3.2 GHz
Multiplier23no data
L1 cache2.25 MB160 KB
L2 cache12 MB1 MB (per core)
L3 cache64 MB (shared)0 KB
Chip lithography14 nm28 nm
Die size213 mm2125 mm2
Maximum case temperature (TCase)no data74 °C
Number of transistors19200 Million1,200 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplier+-

Compatibility

Information on EPYC 7451 and A9-9400 SoC 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
SocketTR4FT4
Power consumption (TDP)180 Watt10 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7451 and A9-9400 SoC. You'll probably need this information if you require some particular technology.

AES-NI++
FMA-+
AVX++

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7451 and A9-9400 SoC are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7451 and A9-9400 SoC. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4 Eight-channelDDR4
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 dataRadeon R5 3CU

Peripherals

Specifications and connection of peripherals supported by EPYC 7451 and A9-9400 SoC.

PCIe version3.03.0
PCI Express lanes1288

Pros & cons summary


Recency 20 June 2017 31 May 2016
Physical cores 24 2
Threads 48 2
Chip lithography 14 nm 28 nm
Power consumption (TDP) 180 Watt 10 Watt

EPYC 7451 has an age advantage of 1 year, 1100% more physical cores and 2300% more threads, and a 100% more advanced lithography process.

A9-9400 SoC, on the other hand, has 1700% lower power consumption.

We couldn't decide between EPYC 7451 and A9-9400 SoC. We've got no test results to judge.

Be aware that EPYC 7451 is a server/workstation processor while A9-9400 SoC is a desktop one.


Should you still have questions on choice between EPYC 7451 and A9-9400 SoC, ask them in Comments section, and we shall answer.

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AMD EPYC 7451
EPYC 7451
AMD A9-9400 SoC
A9-9400 SoC

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Community ratings

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3.3 77 votes

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