EPYC 9655 vs A6-6400K

Primary details

Comparing A6-6400K and EPYC 9655 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2519	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Server
Series	AMD A-Series (Desktop)	no data
Power efficiency	1.38	no data
Architecture codename	Richland (2013−2014)	Turin (2024)
Release date	1 June 2013 (11 years ago)	10 October 2024 (less than a year ago)
Launch price (MSRP)	no data	$11,852

Detailed specifications

A6-6400K and EPYC 9655 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)	96
Threads	2	192
Base clock speed	3.9 GHz	2.6 GHz
Boost clock speed	4.1 GHz	4.5 GHz
L1 cache	96 KB	80 KB (per core)
L2 cache	1024 KB	1 MB (per core)
L3 cache	0 KB	384 MB (shared)
Chip lithography	32 nm	4 nm
Die size	246 mm2	12x 70.6 mm2
Maximum core temperature	70 °C	no data
Maximum case temperature (TCase)	70 °C	no data
Number of transistors	1,178 million	99,780 million
64 bit support	+	+
Windows 11 compatibility	-	no data
Unlocked multiplier	+	-

Compatibility

Information on A6-6400K and EPYC 9655 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	2
Socket	FM2	SP5
Power consumption (TDP)	65 Watt	400 Watt

Technologies and extensions

Technological solutions and additional instructions supported by A6-6400K and EPYC 9655. You'll probably need this information if you require some particular technology.

Instruction set extensions	MMX, SSE1-4a, AES, ABM, AVX, BMI1, AMD64, VT, EVP, Turbo Core 3.0	no data
AES-NI	+	+
FMA	FMA4	-
AVX	+	+
PowerNow	+	-
PowerGating	+	-
VirusProtect	+	-
Precision Boost 2	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by A6-6400K and EPYC 9655 are enumerated here.

AMD-V	+	+
IOMMU 2.0	+	-

Memory specs

Types, maximum amount and channel quantity of RAM supported by A6-6400K and EPYC 9655. 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	AMD Radeon HD 8470D	N/A
จำนวนพาธไลน์	192	no data
Enduro	+	-
Switchable graphics	+	-
UVD	+	-
VCE	+	-

Graphics interfaces

Available interfaces and connections of A6-6400K and EPYC 9655 integrated GPUs.

DisplayPort	+	-
HDMI	+	-

Graphics API support

APIs supported by A6-6400K and EPYC 9655 integrated GPUs, sometimes API versions are included.

DirectX

DirectX® 11

no data

Peripherals

Specifications and connection of peripherals supported by A6-6400K and EPYC 9655.

PCIe version	2.0	5.0
PCI Express lanes	no data	128

Pros & cons summary

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Recency	1 June 2013	10 October 2024
Physical cores	2	96
Threads	2	192
Chip lithography	32 nm	4 nm
Power consumption (TDP)	65 Watt	400 Watt

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