EPYC 7451 vs EPYC 7551

VS

Aggregate performance score

EPYC 7551
2017
32 cores / 64 threads, 180 Watt
16.96
+0.4%

Primary details

Comparing EPYC 7551 and EPYC 7451 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking399402
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation1.331.87
Market segmentServerServer
SeriesAMD EPYCAMD EPYC
Power efficiency8.598.56
Architecture codenameNaples (2017−2018)Naples (2017−2018)
Release date20 June 2017 (7 years ago)20 June 2017 (7 years ago)
Launch price (MSRP)$3,400$2,400

Cost-effectiveness evaluation

Performance per price, higher is better.

EPYC 7451 has 41% better value for money than EPYC 7551.

Detailed specifications

EPYC 7551 and EPYC 7451 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)24 (Tetracosa-Core)
Threads6448
Base clock speed2 GHz2.3 GHz
Boost clock speed2 GHz2.3 GHz
Multiplier2023
L1 cache3 MB2.25 MB
L2 cache16 MB12 MB
L3 cache64 MB (shared)64 MB (shared)
Chip lithography14 nm14 nm
Die size213 mm2213 mm2
Number of transistors19200 Million19200 Million
64 bit support++
Windows 11 compatibility--
Unlocked multiplier++

Compatibility

Information on EPYC 7551 and EPYC 7451 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 (Multiprocessor)
SocketTR4TR4
Power consumption (TDP)180 Watt180 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7551 and EPYC 7451. You'll probably need this information if you require some particular technology.

AES-NI++
AVX++

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7551 and EPYC 7451 are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7551 and EPYC 7451. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4 Eight-channelDDR4 Eight-channel
Maximum memory size2 TiB2 TiB
Max memory channels88
Maximum memory bandwidth170.671 GB/s170.671 GB/s
ECC memory support++

Peripherals

Specifications and connection of peripherals supported by EPYC 7551 and EPYC 7451.

PCIe version3.03.0
PCI Express lanes128128

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.


Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

EPYC 7551 16.96
+0.4%
EPYC 7451 16.90

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

EPYC 7551 25960
+0.4%
EPYC 7451 25863

Gaming performance

Pros & cons summary


Performance score 16.96 16.90
Physical cores 32 24
Threads 64 48

EPYC 7551 has a 0.4% higher aggregate performance score, and 33.3% more physical cores and 33.3% more threads.

Given the minimal performance differences, no clear winner can be declared between EPYC 7551 and EPYC 7451.


Should you still have questions on choice between EPYC 7551 and EPYC 7451, ask them in Comments section, and we shall answer.

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AMD EPYC 7551
EPYC 7551
AMD EPYC 7451
EPYC 7451

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Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


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Questions & comments

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