Ryzen 5 PRO 8640U vs A6-6420K

Primary details

Comparing A6-6420K and Ryzen 5 PRO 8640U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2481	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Server
Power efficiency	1.44	no data
Architecture codename	Richland (2013−2014)	Hawk Point (2024)
Release date	January 2014 (10 years ago)	16 April 2024 (less than a year ago)

Detailed specifications

A6-6420K and Ryzen 5 PRO 8640U 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	2 (Dual-core)	6 (Hexa-Core)
Threads	2	12
Base clock speed	4 GHz	3.5 GHz
Boost clock speed	4.2 GHz	4.9 GHz
L1 cache	96 KB	64 KB (per core)
L2 cache	1024 KB	1 MB (per core)
L3 cache	no data	16 MB (shared)
Chip lithography	32 nm	4 nm
Die size	246 mm2	178 mm2
Maximum core temperature	70 °C	no data
Maximum case temperature (TCase)	70 °C	no data
Number of transistors	1,303 million	25,000 million
64 bit support	+	+
Unlocked multiplier	+	-

Compatibility

Information on A6-6420K and Ryzen 5 PRO 8640U 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	1	1
Socket	FM2	FP7
Power consumption (TDP)	65 Watt	28 Watt

Technologies and extensions

Technological solutions and additional instructions supported by A6-6420K and Ryzen 5 PRO 8640U. You'll probably need this information if you require some particular technology.

AES-NI	+	+
FMA	+	-
AVX	+	+
PowerNow	+	-
PowerGating	+	-
VirusProtect	+	-
Precision Boost 2	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by A6-6420K and Ryzen 5 PRO 8640U are enumerated here.

AMD-V	+	+
IOMMU 2.0	+	-

Memory specs

Types, maximum amount and channel quantity of RAM supported by A6-6420K and Ryzen 5 PRO 8640U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3-1866	DDR5
Max memory channels	2	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	AMD Radeon HD 8470D	AMD Radeon 760M
จำนวนพาธไลน์	192	no data
Enduro	+	-
Switchable graphics	+	-
UVD	+	-

Graphics interfaces

Available interfaces and connections of A6-6420K and Ryzen 5 PRO 8640U integrated GPUs.

DisplayPort	+	-
HDMI	+	-

Graphics API support

APIs supported by A6-6420K and Ryzen 5 PRO 8640U integrated GPUs, sometimes API versions are included.

DirectX

DirectX® 11

no data

Peripherals

Specifications and connection of peripherals supported by A6-6420K and Ryzen 5 PRO 8640U.

PCIe version	2.0	4.0
PCI Express lanes	no data	20

Pros & cons summary

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Integrated graphics card	0.97	14.90
Physical cores	2	6
Threads	2	12
Chip lithography	32 nm	4 nm
Power consumption (TDP)	65 Watt	28 Watt

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