EPYC 9455 vs EPYC 7401P

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Primary details

Comparing EPYC 7401P and EPYC 9455 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking343not rated
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation4.80no data
Market segmentServerServer
SeriesAMD EPYCno data
Power efficiency9.95no data
Architecture codenameNaples (2017−2018)Turin (2024)
Release date29 June 2017 (7 years ago)10 October 2024 (less than a year ago)
Launch price (MSRP)$1,075$5,412

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

EPYC 7401P and EPYC 9455 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)48 (Octatetraconta-Core)
Threads4896
Base clock speed2 GHz3.15 GHz
Boost clock speed3 GHz4.4 GHz
Multiplier20no data
L1 cache96K (per core)80 KB (per core)
L2 cache512K (per core)1 MB (per core)
L3 cache64 MB (shared)192 MB (shared)
Chip lithography14 nm4 nm
Die size192 mm26x 70.6 mm2
Number of transistors4,800 million49,890 million
64 bit support++
Windows 11 compatibility-no data
Unlocked multiplier+-

Compatibility

Information on EPYC 7401P and EPYC 9455 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 configuration1 (Uniprocessor)2
SocketTR4SP5
Power consumption (TDP)170 Watt300 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7401P and EPYC 9455. 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 7401P and EPYC 9455 are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7401P and EPYC 9455. 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 dataN/A

Peripherals

Specifications and connection of peripherals supported by EPYC 7401P and EPYC 9455.

PCIe version3.05.0
PCI Express lanes128128

Pros & cons summary


Recency 29 June 2017 10 October 2024
Physical cores 24 48
Threads 48 96
Chip lithography 14 nm 4 nm
Power consumption (TDP) 170 Watt 300 Watt

EPYC 7401P has 76.5% lower power consumption.

EPYC 9455, on the other hand, has an age advantage of 7 years, 100% more physical cores and 100% more threads, and a 250% more advanced lithography process.

We couldn't decide between EPYC 7401P and EPYC 9455. We've got no test results to judge.


Should you still have questions on choice between EPYC 7401P and EPYC 9455, ask them in Comments section, and we shall answer.

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AMD EPYC 7401P
EPYC 7401P
AMD EPYC 9455
EPYC 9455

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