EPYC 9654 vs i9-9940X

Primary details

Comparing Core i9-9940X and EPYC 9654 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	350	5
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	5.16	1.27
Market segment	Desktop processor	Server
Series	Intel Core i9	AMD EPYC
Power efficiency	10.10	19.76
Architecture codename	Skylake (server) (2017−2019)	Genoa (2022−2023)
Release date	8 October 2018 (6 years ago)	10 November 2022 (2 years ago)
Launch price (MSRP)	$1,387	$11,805

Cost-effectiveness evaluation

Performance per price, higher is better.

i9-9940X has 306% better value for money than EPYC 9654.

Detailed specifications

Core i9-9940X and EPYC 9654 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)	96
Threads	28	192
Base clock speed	3.3 GHz	2.4 GHz
Boost clock speed	4.5 GHz	2.4 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	no data
Multiplier	33	24
L1 cache	896 KB	6 MB
L2 cache	14 MB	96 MB
L3 cache	19.25 MB (shared)	384 MB (shared)
Chip lithography	14 nm	5 nm, 6 nm
Die size	484 mm2	12x 72 mm2
Maximum core temperature	88 °C	no data
Number of transistors	no data	78,840 million
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	-

Compatibility

Information on Core i9-9940X and EPYC 9654 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)	2
Socket	FCLGA2066	SP5
Power consumption (TDP)	165 Watt	360 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-9940X and EPYC 9654. 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 i9-9940X and EPYC 9654 technologies aimed at improving security, for example, by protecting against hacks.

EDB

+

no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-9940X and EPYC 9654 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 i9-9940X and EPYC 9654. 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 i9-9940X and EPYC 9654.

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	18.28	78.01
Recency	8 October 2018	10 November 2022
Physical cores	14	96
Threads	28	192
Chip lithography	14 nm	5 nm
Power consumption (TDP)	165 Watt	360 Watt

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Should you still have questions on choice between Core i9-9940X and EPYC 9654, ask them in Comments section, and we shall answer.

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