A6-6400K vs Phenom II X2 555 BE

Primary details

Comparing Phenom II X2 555 BE and A6-6400K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	2503
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Desktop processor
Series	no data	AMD A-Series (Desktop)
Power efficiency	no data	1.38
Architecture codename	Callisto (2009−2010)	Richland (2013−2014)
Release date	25 January 2010 (14 years ago)	1 June 2013 (11 years ago)

Detailed specifications

Phenom II X2 555 BE and A6-6400K 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)	2 (Dual-core)
Threads	2	2
Base clock speed	3.2 GHz	3.9 GHz
Boost clock speed	3.2 GHz	4.1 GHz
L1 cache	128 KB (per core)	96 KB
L2 cache	512 KB (per core)	1024 KB
L3 cache	6 MB (shared)	0 KB
Chip lithography	45 nm	32 nm
Die size	258 mm2	246 mm2
Maximum core temperature	no data	70 °C
Maximum case temperature (TCase)	no data	70 °C
Number of transistors	758 million	1,178 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	+

Compatibility

Information on Phenom II X2 555 BE and A6-6400K 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	AM3	FM2
Power consumption (TDP)	80 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Phenom II X2 555 BE and A6-6400K. You'll probably need this information if you require some particular technology.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Phenom II X2 555 BE and A6-6400K are enumerated here.

AMD-V	-	+
IOMMU 2.0	-	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Phenom II X2 555 BE and A6-6400K. Depending on the motherboard, higher memory frequencies may be supported.

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

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	AMD Radeon HD 8470D
Number of pipelines	no data	192
Enduro	-	+
Switchable graphics	-	+
UVD	-	+
VCE	-	+

Graphics interfaces

Available interfaces and connections of Phenom II X2 555 BE and A6-6400K integrated GPUs.

DisplayPort	-	+
HDMI	-	+

Graphics API support

APIs supported by Phenom II X2 555 BE and A6-6400K integrated GPUs, sometimes API versions are included.

DirectX

no data

DirectX® 11

Peripherals

Specifications and connection of peripherals supported by Phenom II X2 555 BE and A6-6400K.

PCIe version

2.0

2.0

Pros & cons summary

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Recency	25 January 2010	1 June 2013
Chip lithography	45 nm	32 nm
Power consumption (TDP)	80 Watt	65 Watt

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