A4-9120C vs EPYC 7281

Primary details

Comparing EPYC 7281 and A4-9120C processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	540	2837
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	4.78	no data
Market segment	Server	Laptop
Series	AMD EPYC	AMD Bristol Ridge
Power efficiency	7.58	8.51
Architecture codename	Naples (2017−2018)	Stoney Ridge (2016−2019)
Release date	20 June 2017 (7 years ago)	6 January 2019 (5 years ago)
Launch price (MSRP)	$650	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

EPYC 7281 and A4-9120C 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)	2 (Dual-core)
Threads	32	2
Base clock speed	2.1 GHz	no data
Boost clock speed	2.1 GHz	1.6 GHz
Multiplier	21	16
L1 cache	1.5 MB	160 KB
L2 cache	8 MB	1 MB
L3 cache	32 MB (shared)	no data
Chip lithography	14 nm	28 nm
Die size	213 mm2	124.5 mm2
Number of transistors	19200 Million	1200 Million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	-

Compatibility

Information on EPYC 7281 and A4-9120C 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)	no data
Socket	TR4	BGA
Power consumption (TDP)	155 W, 170 Watt	6 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7281 and A4-9120C. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Virtualization,
AES-NI	+	+
AVX	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7281 and A4-9120C are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7281 and A4-9120C. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Eight-channel	DDR4
Maximum memory size	2 TiB	no data
Max memory channels	8	no data
Maximum memory bandwidth	170.671 GB/s	14.936 GB/s
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

AMD Radeon R4 (Stoney Ridge)

Peripherals

Specifications and connection of peripherals supported by EPYC 7281 and A4-9120C.

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.

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Pros & cons summary

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Performance score	14.13	0.56
Recency	20 June 2017	6 January 2019
Physical cores	16	2
Threads	32	2
Chip lithography	14 nm	28 nm
Power consumption (TDP)	155 Watt	6 Watt

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Should you still have questions on choice between EPYC 7281 and A4-9120C, ask them in Comments section, and we shall answer.

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