EPYC 9354P vs i9-7940X

Primary details

Comparing Core i9-7940X and EPYC 9354P processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	402	37
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.92	14.43
Market segment	Desktop processor	Server
Series	Intel Core i9	AMD EPYC
Power efficiency	9.37	16.29
Architecture codename	Skylake (server) (2017−2019)	Genoa (2022−2023)
Release date	30 May 2017 (7 years ago)	10 November 2022 (2 years ago)
Launch price (MSRP)	$1,399	$2,730

Cost-effectiveness evaluation

Performance per price, higher is better.

EPYC 9354P has 394% better value for money than i9-7940X.

Detailed specifications

Core i9-7940X and EPYC 9354P 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 cores	14 (Tetradeca-Core)	32 (Dotriaconta-Core)
Threads	28	64
Base clock speed	3.1 GHz	3.25 GHz
Boost clock speed	4.4 GHz	3.25 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	no data
Multiplier	no data	32.5
L1 cache	896 KB	2 MB
L2 cache	14 MB	32 MB
L3 cache	19.25 MB (shared)	256 MB (shared)
Chip lithography	14 nm	5 nm, 6 nm
Die size	484 mm2	8x 72 mm2
Maximum core temperature	102 °C	no data
Number of transistors	no data	52,560 million
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	-

Compatibility

Information on Core i9-7940X and EPYC 9354P 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 configuration	1 (Uniprocessor)	1
Socket	FCLGA2066	SP5
Power consumption (TDP)	165 Watt	280 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-7940X and EPYC 9354P. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512	no data
AES-NI	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
TSX	+	-
Turbo Boost Max 3.0	+	no data
Precision Boost 2	no data	+

Security technologies

Core i9-7940X and EPYC 9354P technologies aimed at improving security, for example, by protecting against hacks.

EDB

+

no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-7940X and EPYC 9354P are enumerated here.

AMD-V	-	+
VT-d	+	no data
VT-x	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i9-7940X and EPYC 9354P. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2666	DDR5-4800
Maximum memory size	128 GB	6 TiB
Max memory channels	4	no data
Maximum memory bandwidth	85.33 GB/s	460.8 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

N/A

no data

Peripherals

Specifications and connection of peripherals supported by Core i9-7940X and EPYC 9354P.

PCIe version	3.0	5.0
PCI Express lanes	44	128

Synthetic benchmark performance

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

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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.

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Pros & cons summary

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Performance score	16.40	48.40
Recency	30 May 2017	10 November 2022
Physical cores	14	32
Threads	28	64
Chip lithography	14 nm	5 nm
Power consumption (TDP)	165 Watt	280 Watt

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Should you still have questions on choice between Core i9-7940X and EPYC 9354P, ask them in Comments section, and we shall answer.

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