EPYC 9354 vs EPYC 7742

Primary details

Comparing EPYC 7742 and EPYC 9354 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	46	55
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.35	9.64
Market segment	Server	Server
Series	AMD EPYC	AMD EPYC
Power efficiency	18.45	14.44
Architecture codename	Zen 2 (2017−2020)	Genoa (2022−2023)
Release date	7 August 2019 (5 years ago)	10 November 2022 (2 years ago)
Launch price (MSRP)	$6,950	$3,420

Cost-effectiveness evaluation

Performance per price, higher is better.

EPYC 9354 has 188% better value for money than EPYC 7742.

Detailed specifications

EPYC 7742 and EPYC 9354 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	64 (Tetrahexaconta-Core)	32 (Dotriaconta-Core)
Threads	128	64
Base clock speed	2.25 GHz	3.25 GHz
Boost clock speed	3.4 GHz	3.25 GHz
Multiplier	22.5	32.5
L1 cache	4 MB	2 MB
L2 cache	32 MB	32 MB
L3 cache	256 MB (shared)	256 MB (shared)
Chip lithography	7 nm, 14 nm	5 nm, 6 nm
Die size	192 mm2	8x 72 mm2
Number of transistors	4,800 million	52,560 million
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	-

Compatibility

Information on EPYC 7742 and EPYC 9354 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	2 (Multiprocessor)	2
Socket	TR4	SP5
Power consumption (TDP)	225 Watt	280 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7742 and EPYC 9354. You'll probably need this information if you require some particular technology.

AES-NI	+	+
AVX	+	+
Precision Boost 2	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7742 and EPYC 9354 are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7742 and EPYC 9354. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Eight-channel	DDR5-4800
Maximum memory size	4 TiB	6 TiB
Max memory channels	8	no data
Maximum memory bandwidth	204.763 GB/s	460.8 GB/s
ECC memory support	+	-

Peripherals

Specifications and connection of peripherals supported by EPYC 7742 and EPYC 9354.

PCIe version	no data	5.0
PCI Express lanes	no data	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	43.86	42.71
Recency	7 August 2019	10 November 2022
Physical cores	64	32
Threads	128	64
Chip lithography	7 nm	5 nm
Power consumption (TDP)	225 Watt	280 Watt

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Should you still have questions on choice between EPYC 7742 and EPYC 9354, ask them in Comments section, and we shall answer.

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