A6-6420K vs EPYC 7763

Primary details

Comparing EPYC 7763 and A6-6420K processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	21	2357
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	33.56	no data
Market segment	Server	Desktop processor
Series	AMD EPYC	no data
Architecture codename	Milan (2021)	Richland (2013−2014)
Release date	15 March 2021 (3 years ago)	January 2014 (10 years ago)
Launch price (MSRP)	$7,890	no data
Current price	$1691 (0.2x MSRP)	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

EPYC 7763 and A6-6420K 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	4 GHz
Boost clock speed	3.5 GHz	4.2 GHz
L1 cache	64 KB (per core)	96 KB
L2 cache	512 KB (per core)	1024 KB
L3 cache	256 MB (shared)	no data
Chip lithography	7 nm+	32 nm
Die size	8x 81 mm2	246 mm2
Maximum core temperature	no data	70 °C
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	Yes	Yes

Compatibility

Information on EPYC 7763 and A6-6420K 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 A6-6420K. You'll probably need this information if you require some particular technology.

AES-NI	+	+
FMA	no data	+
AVX	+	+
PowerTune	no data	-
TrueAudio	no data	-
PowerNow	no data	+
PowerGating	no data	+
Out-of-band client management	no data	-
VirusProtect	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7763 and A6-6420K are enumerated here.

AMD-V	+	+
IOMMU 2.0	no data	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7763 and A6-6420K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-3200	DDR3-1866
Maximum memory size	4 TiB	no data
Max memory channels	no data	2
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
Number of pipelines	no data	192
Enduro	no data	+
Switchable graphics	no data	1
UVD	no data	+

Graphics interfaces

Available interfaces and connections of EPYC 7763 and A6-6420K integrated GPUs.

DisplayPort	no data	+
HDMI	no data	+

Graphics API support

APIs supported by EPYC 7763 and A6-6420K integrated GPUs, sometimes API versions are included.

DirectX

no data

DirectX® 11

Peripherals

Specifications and connection of peripherals supported by EPYC 7763 and A6-6420K.

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.

EPYC 7763 outperforms A6-6420K by 5258% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	54.65	1.02
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 A6-6420K, ask them in Comments section, and we shall answer.

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