EPYC 7702P vs i9-9940X

Primary details

Comparing Core i9-9940X and EPYC 7702P processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	350	64
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	5.06	6.33
Market segment	Desktop processor	Server
Series	Intel Core i9	AMD EPYC
Power efficiency	10.10	18.86
Architecture codename	Skylake (server) (2017−2019)	Zen 2 (2017−2020)
Release date	8 October 2018 (6 years ago)	7 August 2019 (5 years ago)
Launch price (MSRP)	$1,387	$4,425

Cost-effectiveness evaluation

Performance per price, higher is better.

EPYC 7702P has 25% better value for money than i9-9940X.

Detailed specifications

Core i9-9940X and EPYC 7702P 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)	64 (Tetrahexaconta-Core)
Threads	28	128
Base clock speed	3.3 GHz	2 GHz
Boost clock speed	4.5 GHz	3.35 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	no data
Multiplier	33	20
L1 cache	896 KB	4 MB
L2 cache	14 MB	32 MB
L3 cache	19.25 MB (shared)	256 MB (shared)
Chip lithography	14 nm	7 nm, 14 nm
Die size	484 mm2	192 mm2
Maximum core temperature	88 °C	no data
Number of transistors	no data	4,800 million
64 bit support	+	+
Windows 11 compatibility	+	+
Unlocked multiplier	+	+

Compatibility

Information on Core i9-9940X and EPYC 7702P 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 (Uniprocessor)
Socket	FCLGA2066	TR4
Power consumption (TDP)	165 Watt	200 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-9940X and EPYC 7702P. 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 7702P 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 7702P 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 7702P. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2666	DDR4 Eight-channel
Maximum memory size	128 GB	4 TiB
Max memory channels	4	8
Maximum memory bandwidth	85.33 GB/s	204.763 GB/s
ECC memory support	-	+

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 7702P.

PCIe version	3.0	no data
PCI Express lanes	44	no data

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	17.61	39.85
Recency	8 October 2018	7 August 2019
Physical cores	14	64
Threads	28	128
Chip lithography	14 nm	7 nm
Power consumption (TDP)	165 Watt	200 Watt

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Should you still have questions on choice between Core i9-9940X and EPYC 7702P, ask them in Comments section, and we shall answer.

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