EPYC 9654P vs EPYC 7642

Primary details

Comparing EPYC 7642 and EPYC 9654P processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	90	6
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	5.23	1.88
Market segment	Server	Server
Series	AMD EPYC	AMD EPYC
Power efficiency	15.57	18.86
Architecture codename	Zen 2 (2017−2020)	Genoa (2022−2023)
Release date	7 August 2019 (5 years ago)	10 November 2022 (1 year ago)
Launch price (MSRP)	$4,775	$10,625

Cost-effectiveness evaluation

Performance per price, higher is better.

EPYC 7642 has 178% better value for money than EPYC 9654P.

Detailed specifications

EPYC 7642 and EPYC 9654P 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	48 (Octatetraconta-Core)	96
Threads	96	192
Base clock speed	2.4 GHz	2.4 GHz
Boost clock speed	3.3 GHz	2.4 GHz
Multiplier	23	24
L1 cache	3 MB	6 MB
L2 cache	24 MB	96 MB
L3 cache	256 MB (shared)	384 MB (shared)
Chip lithography	7 nm, 14 nm	5 nm, 6 nm
Die size	192 mm2	12x 72 mm2
Number of transistors	4,800 million	78,840 million
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	-

Compatibility

Information on EPYC 7642 and EPYC 9654P 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	360 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7642 and EPYC 9654P. 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 7642 and EPYC 9654P are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7642 and EPYC 9654P. 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 7642 and EPYC 9654P.

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	38.42	74.46
Recency	7 August 2019	10 November 2022
Physical cores	48	96
Threads	96	192
Chip lithography	7 nm	5 nm
Power consumption (TDP)	225 Watt	360 Watt

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Should you still have questions on choice between EPYC 7642 and EPYC 9654P, ask them in Comments section, and we shall answer.

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