Ryzen 9 7900X vs EPYC 7451

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Aggregate performance score

EPYC 7451
2017
24 cores / 48 threads, 180 Watt
16.28
Ryzen 9 7900X
2022
12 cores / 24 threads, 170 Watt
32.51
+99.7%

Ryzen 9 7900X outperforms EPYC 7451 by a whopping 100% based on our aggregate benchmark results.

Primary details

Comparing EPYC 7451 and Ryzen 9 7900X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking411124
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation1.79no data
Market segmentServerDesktop processor
SeriesAMD EPYCno data
Power efficiency8.5618.10
Architecture codenameNaples (2017−2018)Raphael (Zen4) (2022−2023)
Release date20 June 2017 (7 years ago)27 September 2022 (2 years ago)
Launch price (MSRP)$2,400no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

EPYC 7451 and Ryzen 9 7900X 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)12 (Dodeca-Core)
Threads4824
Base clock speed2.3 GHz4.7 GHz
Boost clock speed2.3 GHz5.6 GHz
Multiplier23no data
L1 cache2.25 MB64K (per core)
L2 cache12 MB1 MB (per core)
L3 cache64 MB (shared)64 MB (shared)
Chip lithography14 nm5 nm
Die size213 mm22x 70 (CCD) mm2 + 122 (I/O) mm2
Maximum core temperatureno data95 °C
Maximum case temperature (TCase)no data47 °C
Number of transistors19200 MillionCCD: 6,5 Mrd + IOD: 3,4 Mrd Million
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier++

Compatibility

Information on EPYC 7451 and Ryzen 9 7900X 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
SocketTR4AM5
Power consumption (TDP)180 Watt170 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7451 and Ryzen 9 7900X. You'll probably need this information if you require some particular technology.

Instruction set extensionsno data5 nm (CCD), 6 nm (I/O) nm, 0.650 - 1.475V
AES-NI++
AVX++
Precision Boost 2no data+

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7451 and Ryzen 9 7900X are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7451 and Ryzen 9 7900X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4 Eight-channelDDR5-5200
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 Graphics (Ryzen 7000)

Peripherals

Specifications and connection of peripherals supported by EPYC 7451 and Ryzen 9 7900X.

PCIe version3.05.0
PCI Express lanes12824

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 7451 16.28
Ryzen 9 7900X 32.51
+99.7%

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 7451 25863
Ryzen 9 7900X 51640
+99.7%

Gaming performance

Pros & cons summary


Performance score 16.28 32.51
Recency 20 June 2017 27 September 2022
Physical cores 24 12
Threads 48 24
Chip lithography 14 nm 5 nm
Power consumption (TDP) 180 Watt 170 Watt

EPYC 7451 has 100% more physical cores and 100% more threads.

Ryzen 9 7900X, on the other hand, has a 99.7% higher aggregate performance score, an age advantage of 5 years, a 180% more advanced lithography process, and 5.9% lower power consumption.

The Ryzen 9 7900X is our recommended choice as it beats the EPYC 7451 in performance tests.

Be aware that EPYC 7451 is a server/workstation processor while Ryzen 9 7900X is a desktop one.


Should you still have questions on choice between EPYC 7451 and Ryzen 9 7900X, ask them in Comments section, and we shall answer.

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AMD EPYC 7451
EPYC 7451
AMD Ryzen 9 7900X
Ryzen 9 7900X

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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

Here you can ask a question about EPYC 7451 or Ryzen 9 7900X, agree or disagree with our judgements, or report an error or mismatch.