EPYC 9745 vs EPYC 7281

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Primary details

Comparing EPYC 7281 and EPYC 9745 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking551not rated
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation4.78no data
Market segmentServerServer
SeriesAMD EPYCno data
Power efficiency7.58no data
Architecture codenameNaples (2017−2018)Turin (2024)
Release date20 June 2017 (7 years ago)10 October 2024 (less than a year ago)
Launch price (MSRP)$650$12,141

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

EPYC 7281 and EPYC 9745 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 cores16 (Hexadeca-Core)128
Threads32256
Base clock speed2.1 GHz2.4 GHz
Boost clock speed2.1 GHz3.7 GHz
Multiplier21no data
L1 cache1.5 MB80 KB (per core)
L2 cache8 MB1 MB (per core)
L3 cache32 MB (shared)256 MB (shared)
Chip lithography14 nm3 nm
Die size213 mm2no data
Number of transistors19200 Millionno data
64 bit support++
Windows 11 compatibility-no data
Unlocked multiplier+-

Compatibility

Information on EPYC 7281 and EPYC 9745 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)2
SocketTR4SP5
Power consumption (TDP)155 W, 170 Watt400 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7281 and EPYC 9745. 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 7281 and EPYC 9745 are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7281 and EPYC 9745. 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 7281 and EPYC 9745.

PCIe version3.05.0
PCI Express lanes128128

Pros & cons summary


Recency 20 June 2017 10 October 2024
Physical cores 16 128
Threads 32 256
Chip lithography 14 nm 3 nm
Power consumption (TDP) 155 Watt 400 Watt

EPYC 7281 has 158.1% lower power consumption.

EPYC 9745, on the other hand, has an age advantage of 7 years, 700% more physical cores and 700% more threads, and a 366.7% more advanced lithography process.

We couldn't decide between EPYC 7281 and EPYC 9745. We've got no test results to judge.


Should you still have questions on choice between EPYC 7281 and EPYC 9745, ask them in Comments section, and we shall answer.

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AMD EPYC 7281
EPYC 7281
AMD EPYC 9745
EPYC 9745

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