EPYC 9554 vs EPYC 7551

Primary details

Comparing EPYC 7551 and EPYC 9554 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	400	8
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.24	2.99
Market segment	Server	Server
Series	AMD EPYC	AMD EPYC
Power efficiency	8.59	18.50
Architecture codename	Naples (2017−2018)	Genoa (2022−2023)
Release date	20 June 2017 (7 years ago)	10 November 2022 (2 years ago)
Launch price (MSRP)	$3,400	$9,087

Cost-effectiveness evaluation

Performance per price, higher is better.

EPYC 9554 has 141% better value for money than EPYC 7551.

Detailed specifications

EPYC 7551 and EPYC 9554 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	32 (Dotriaconta-Core)	64 (Tetrahexaconta-Core)
Threads	64	128
Base clock speed	2 GHz	3.1 GHz
Boost clock speed	2 GHz	3.1 GHz
Multiplier	20	31
L1 cache	3 MB	4 MB
L2 cache	16 MB	64 MB
L3 cache	64 MB (shared)	256 MB (shared)
Chip lithography	14 nm	5 nm, 6 nm
Die size	213 mm2	8x 72 mm2
Number of transistors	19200 Million	52,560 million
64 bit support	+	+
Windows 11 compatibility	-	no data
Unlocked multiplier	+	-

Compatibility

Information on EPYC 7551 and EPYC 9554 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)	180 Watt	360 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7551 and EPYC 9554. You'll probably need this information if you require some particular technology.

AES-NI	+	+
AVX	+	+
Precision Boost 2	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7551 and EPYC 9554 are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7551 and EPYC 9554. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Eight-channel	DDR5-4800
Maximum memory size	2 TiB	6 TiB
Max memory channels	8	no data
Maximum memory bandwidth	170.671 GB/s	460.8 GB/s
ECC memory support	+	-

Peripherals

Specifications and connection of peripherals supported by EPYC 7551 and EPYC 9554.

PCIe version	3.0	5.0
PCI Express lanes	128	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	16.34	70.38
Recency	20 June 2017	10 November 2022
Physical cores	32	64
Threads	64	128
Chip lithography	14 nm	5 nm
Power consumption (TDP)	180 Watt	360 Watt

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Should you still have questions on choice between EPYC 7551 and EPYC 9554, ask them in Comments section, and we shall answer.

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