A6-4455M vs Xeon L5640

Primary details

Comparing Xeon L5640 and A6-4455M processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1651	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.53	no data
Market segment	Server	Laptop
Series	no data	AMD A-Series
Power efficiency	4.61	no data
Architecture codename	Westmere-EP (2010−2011)	Trinity (2012−2013)
Release date	16 March 2010 (14 years ago)	15 May 2012 (12 years ago)
Launch price (MSRP)	$200	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon L5640 and A6-4455M 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	6 (Hexa-Core)	2 (Dual-core)
Threads	12	2
Base clock speed	2.26 GHz	2.1 GHz
Boost clock speed	2.8 GHz	2.6 GHz
L1 cache	64 KB (per core)	92 KB
L2 cache	256 KB (per core)	2 MB (shared)
L3 cache	12 MB (shared)	0 KB
Chip lithography	32 nm	32 nm
Die size	239 mm2	246 mm2
Maximum core temperature	69 °C	no data
Maximum case temperature (TCase)	no data	100 °C
Number of transistors	1,170 million	1,178 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Xeon L5640 and A6-4455M 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	FCLGA1366,LGA1366	FP2
Power consumption (TDP)	60 Watt	17 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon L5640 and A6-4455M. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	86x SSE (1, 2, 3, 3S, 4.1, 4.2, 4A),-64, AES, AVX, FMA
AES-NI	+	+
FMA	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	1.0	no data
Hyper-Threading Technology	+	no data
Idle States	+	no data
Demand Based Switching	+	no data
PAE	40 Bit	no data

Security technologies

Xeon L5640 and A6-4455M technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon L5640 and A6-4455M are enumerated here.

AMD-V	-	+
VT-d	+	no data
VT-x	+	no data
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon L5640 and A6-4455M. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	unknown Dual-channel
Maximum memory size	288 GB	no data
Max memory channels	3	no data
Maximum memory bandwidth	32 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

AMD Radeon HD 7500G

Peripherals

Specifications and connection of peripherals supported by Xeon L5640 and A6-4455M.

PCIe version

2.0

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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Pros & cons summary

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Recency	16 March 2010	15 May 2012
Physical cores	6	2
Threads	12	2
Power consumption (TDP)	60 Watt	17 Watt

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Should you still have questions on choice between Xeon L5640 and A6-4455M, ask them in Comments section, and we shall answer.

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