EPYC 9845 vs EPYC 7251

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Aggregate performance score

EPYC 7251
2017
8 cores / 16 threads, 120 Watt
9.32
EPYC 9845
2024
160 cores / 320 threads, 390 Watt
87.23
+836%

EPYC 9845 outperforms EPYC 7251 by a whopping 836% based on our aggregate benchmark results.

Primary details

Comparing EPYC 7251 and EPYC 9845 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking8233
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation2.720.56
Market segmentServerServer
SeriesAMD EPYCno data
Power efficiency7.4121.33
Architecture codenameNaples (2017−2018)Turin (2024)
Release date20 June 2017 (7 years ago)10 October 2024 (less than a year ago)
Launch price (MSRP)$574$13,564

Cost-effectiveness evaluation

Performance per price, higher is better.

EPYC 7251 has 386% better value for money than EPYC 9845.

Detailed specifications

EPYC 7251 and EPYC 9845 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 cores8 (Octa-Core)160
Threads16320
Base clock speed2.1 GHz2.1 GHz
Boost clock speed2.1 GHz3.7 GHz
Multiplier21no data
L1 cache768 KB80 KB (per core)
L2 cache4 MB1 MB (per core)
L3 cache32 MB (shared)320 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 7251 and EPYC 9845 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)120 Watt390 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7251 and EPYC 9845. 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 7251 and EPYC 9845 are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7251 and EPYC 9845. 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 bandwidth153.652 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 7251 and EPYC 9845.

PCIe version3.05.0
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 7251 9.32
EPYC 9845 87.23
+836%

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 7251 14935
EPYC 9845 139712
+835%

Gaming performance

Pros & cons summary


Performance score 9.32 87.23
Recency 20 June 2017 10 October 2024
Physical cores 8 160
Threads 16 320
Chip lithography 14 nm 3 nm
Power consumption (TDP) 120 Watt 390 Watt

EPYC 7251 has 225% lower power consumption.

EPYC 9845, on the other hand, has a 835.9% higher aggregate performance score, an age advantage of 7 years, 1900% more physical cores and 1900% more threads, and a 366.7% more advanced lithography process.

The EPYC 9845 is our recommended choice as it beats the EPYC 7251 in performance tests.


Should you still have questions on choice between EPYC 7251 and EPYC 9845, ask them in Comments section, and we shall answer.

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AMD EPYC 7251
EPYC 7251
AMD EPYC 9845
EPYC 9845

Other comparisons

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Community ratings

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