A12-9800 vs EPYC 7551

Primary details

Comparing EPYC 7551 and A12-9800 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	436	1785
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.26	1.79
Market segment	Server	Desktop processor
Series	AMD EPYC	no data
Architecture codename	Naples (2017−2018)	Bristol Ridge (2016−2019)
Release date	29 June 2017 (7 years ago)	27 July 2017 (7 years ago)
Launch price (MSRP)	$3,400	$139

Cost-effectiveness evaluation

Performance per price, higher is better.

A12-9800 has 42% better value for money than EPYC 7551.

Detailed specifications

EPYC 7551 and A12-9800 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)	4 (Quad-Core)
Threads	64	4
Base clock speed	2 GHz	3.8 GHz
Boost clock speed	3 GHz	4.2 GHz
Multiplier	20	no data
L1 cache	96K (per core)	no data
L2 cache	512K (per core)	2048 KB
L3 cache	64 MB (shared)	0 KB
Chip lithography	14 nm	28 nm
Die size	192 mm2	246 mm2
Maximum core temperature	no data	90 °C
Maximum case temperature (TCase)	no data	74 °C
Number of transistors	4,800 million	1,178 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	-

Compatibility

Information on EPYC 7551 and A12-9800 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	AM4
Power consumption (TDP)	180 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7551 and A12-9800. You'll probably need this information if you require some particular technology.

AES-NI	+	+
FMA	-	+
AVX	+	+
FRTC	-	+
FreeSync	-	+
PowerTune	-	+
TrueAudio	-	+
PowerNow	-	+
PowerGating	-	+
VirusProtect	-	+

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7551 and A12-9800 are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7551 and A12-9800. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Eight-channel	DDR4-2400
Maximum memory size	2 TiB	no data
Max memory channels	8	2
Maximum memory bandwidth	170.671 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	AMD Radeon R7 Graphics
iGPU core count	no data	8
Enduro	-	+
UVD	-	+
VCE	-	+

Graphics interfaces

Available interfaces and connections of EPYC 7551 and A12-9800 integrated GPUs.

DisplayPort	-	+
HDMI	-	+

Graphics API support

APIs supported by EPYC 7551 and A12-9800 integrated GPUs, sometimes API versions are included.

DirectX	no data	DirectX® 12
Vulkan	-	+

Peripherals

Specifications and connection of peripherals supported by EPYC 7551 and A12-9800.

PCIe version	3.0	3.0
PCI Express lanes	128	8

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.

Pros & cons summary

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Performance score	15.91	2.33
Physical cores	32	4
Threads	64	4
Chip lithography	14 nm	28 nm
Power consumption (TDP)	180 Watt	65 Watt

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Should you still have questions on choice between EPYC 7551 and A12-9800, ask them in Comments section, and we shall answer.

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