EPYC 7742 vs Ryzen 9 3950X

Primary details

Comparing Ryzen 9 3950X and EPYC 7742 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	205	46
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	18.01	3.35
Market segment	Desktop processor	Server
Series	AMD Ryzen 9	AMD EPYC
Power efficiency	21.98	18.45
Architecture codename	Matisse (Zen 2) (2019−2020)	Zen 2 (2017−2020)
Release date	14 November 2019 (5 years ago)	7 August 2019 (5 years ago)
Launch price (MSRP)	$799	$6,950

Cost-effectiveness evaluation

Performance per price, higher is better.

Ryzen 9 3950X has 438% better value for money than EPYC 7742.

Detailed specifications

Ryzen 9 3950X and EPYC 7742 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	16 (Hexadeca-Core)	64 (Tetrahexaconta-Core)
Threads	32	128
Base clock speed	3.5 GHz	2.25 GHz
Boost clock speed	4.7 GHz	3.4 GHz
Multiplier	no data	22.5
L1 cache	96K (per core)	96K (per core)
L2 cache	512K (per core)	512K (per core)
L3 cache	64 MB	256 MB (shared)
Chip lithography	7 nm, 12 nm	7 nm, 14 nm
Die size	2 x 72 mm + 125 mm (IO-Die) mm2	192 mm2
Number of transistors	19,200 million	4,800 million
64 bit support	+	+
Windows 11 compatibility	+	+
Unlocked multiplier	+	+

Compatibility

Information on Ryzen 9 3950X and EPYC 7742 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 (Multiprocessor)
Socket	AM4	TR4
Power consumption (TDP)	105 Watt	225 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 3950X and EPYC 7742. You'll probably need this information if you require some particular technology.

Instruction set extensions	86x MMX(+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A,-64, AMD-V, AES, AVX, AVX2, FMA3, SHA, Precision Boost 2	no data
AES-NI	+	+
AVX	+	+
Precision Boost 2	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 3950X and EPYC 7742 are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 3950X and EPYC 7742. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Dual-channel	DDR4 Eight-channel
Maximum memory size	128 GB	4 TiB
Max memory channels	no data	8
Maximum memory bandwidth	51.196 GB/s	204.763 GB/s
ECC memory support	+	+

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	24.39	43.86
Recency	14 November 2019	7 August 2019
Physical cores	16	64
Threads	32	128
Power consumption (TDP)	105 Watt	225 Watt

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Should you still have questions on choice between Ryzen 9 3950X and EPYC 7742, ask them in Comments section, and we shall answer.

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