A6-6400B vs EPYC 7763

Primary details

Comparing EPYC 7763 and A6-6400B processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	25	2444
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.15	no data
Market segment	Server	Desktop processor
Series	AMD EPYC	no data
Power efficiency	17.98	1.48
Architecture codename	Milan (2021−2023)	Richland (2013−2014)
Release date	12 January 2021 (3 years ago)	1 June 2013 (11 years ago)
Launch price (MSRP)	$7,890	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

EPYC 7763 and A6-6400B 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	64 (Tetrahexaconta-Core)	2 (Dual-core)
Threads	128	2
Base clock speed	2.45 GHz	3.9 GHz
Boost clock speed	3.5 GHz	4.1 GHz
Multiplier	24.5	no data
L1 cache	4 MB	96K
L2 cache	32 MB	1 MB (shared)
L3 cache	256 MB (shared)	no data
Chip lithography	7 nm+	32 nm
Die size	8x 81 mm2	246 mm2
Maximum case temperature (TCase)	no data	70 °C
Number of transistors	33,200 million	1,303 million
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	-	+

Compatibility

Information on EPYC 7763 and A6-6400B 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	1
Socket	SP3	FM2
Power consumption (TDP)	280 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7763 and A6-6400B. You'll probably need this information if you require some particular technology.

AES-NI	+	+
FMA	-	+
AVX	+	+
PowerNow	-	+

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7763 and A6-6400B are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7763 and A6-6400B. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-3200	DDR3-1866
Maximum memory size	4 TiB	no data
Maximum memory bandwidth	204.795 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

N/A

AMD Radeon HD 8470D

Peripherals

Specifications and connection of peripherals supported by EPYC 7763 and A6-6400B.

PCIe version	4.0	2.0
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	53.43	1.02
Recency	12 January 2021	1 June 2013
Physical cores	64	2
Threads	128	2
Chip lithography	7 nm	32 nm
Power consumption (TDP)	280 Watt	65 Watt

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Should you still have questions on choice between EPYC 7763 and A6-6400B, ask them in Comments section, and we shall answer.

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