A6-4400M vs EPYC 7551

Primary details

Comparing EPYC 7551 and A6-4400M processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	450	2627
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	19.38	no data
Market segment	Server	Laptop
Series	AMD EPYC	AMD A-Series
Architecture codename	Naples (2017−2018)	Trinity (2012−2013)
Release date	29 June 2017 (6 years ago)	15 May 2012 (12 years ago)
Launch price (MSRP)	$3,400	no data
Current price	$252 (0.1x MSRP)	$95

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

EPYC 7551 and A6-4400M 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)	2 (Dual-core)
Threads	64	2
Base clock speed	2 GHz	2.7 GHz
Boost clock speed	3 GHz	3.2 GHz
L1 cache	96K (per core)	96 KB
L2 cache	512K (per core)	1 MB (shared)
L3 cache	64 MB (shared)	0 KB
Chip lithography	14 nm	32 nm
Die size	192 mm2	246 mm2
Number of transistors	4,800 million	1,178 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	Yes	No

Compatibility

Information on EPYC 7551 and A6-4400M 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)	1
Socket	TR4	FS1r2
Power consumption (TDP)	180 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7551 and A6-4400M. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	86x SSE (1, 2, 3, 3S, 4.1, 4.2, 4A),-64, AES, AVX, FMA
AES-NI	+	+
FMA	no data	+
AVX	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7551 and A6-4400M are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7551 and A6-4400M. Depending on the motherboard, higher memory frequencies may be supported.

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

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

AMD Radeon HD 7520G

Peripherals

Specifications and connection of peripherals supported by EPYC 7551 and A6-4400M.

PCIe version	3.0	no data
PCI Express lanes	128	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.

EPYC 7551 outperforms A6-4400M by 2134% based on our aggregated benchmark results.

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Pros & cons summary

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Performance score	14.52	0.65
Recency	29 June 2017	15 May 2012
Physical cores	32	2
Threads	64	2
Chip lithography	14 nm	32 nm
Power consumption (TDP)	180 Watt	35 Watt

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Should you still have questions on choice between EPYC 7551 and A6-4400M, ask them in Comments section, and we shall answer.

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