i5-520M vs Xeon E5345

Primary details

Comparing Xeon E5345 and Core i5-520M processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2371	2419
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.06	no data
Market segment	Server	Laptop
Series	no data	Intel Core i5
Power efficiency	1.40	2.92
Architecture codename	Clovertown (2006−2007)	Arrandale (2010−2011)
Release date	14 November 2006 (18 years ago)	7 January 2010 (14 years ago)
Launch price (MSRP)	$851	$225

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E5345 and Core i5-520M 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	4 (Quad-Core)	2 (Dual-core)
Threads	4	4
Base clock speed	2.33 GHz	2.4 GHz
Boost clock speed	0.33 GHz	2.93 GHz
Bus type	no data	DMI 1.0
Bus rate	no data	1 × 2.5 GT/s
Multiplier	no data	18
L1 cache	64 KB (per core)	128 KB
L2 cache	4 MB (per die)	512 KB
L3 cache	8 MB L2 Cache	3 MB
Chip lithography	65 nm	32 nm
Die size	2x 143 mm2	81+114 mm2
Maximum core temperature	no data	105 °C
Maximum case temperature (TCase)	66 °C	no data
Number of transistors	582 million	382+177 Million
64 bit support	+	+
Windows 11 compatibility	no data	-
VID voltage range	1V-1.5V	no data

Compatibility

Information on Xeon E5345 and Core i5-520M 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 (Uniprocessor)
Socket	LGA771,PLGA771	BGA1288,PGA988
Power consumption (TDP)	80 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5345 and Core i5-520M. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.1, Intel® SSE4.2
AES-NI	-	+
FMA	-	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	+
Hyper-Threading Technology	-	+
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	no data	+
Demand Based Switching	+	no data
PAE	32 Bit	36 Bit
FDI	no data	+
Fast Memory Access	no data	+
FSB parity	+	no data

Security technologies

Xeon E5345 and Core i5-520M technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5345 and Core i5-520M are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5345 and Core i5-520M. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR2, DDR3 Depends on motherboard	DDR3-800, DDR3-1066
Maximum memory size	no data	8.3 GB
Max memory channels	no data	2
Maximum memory bandwidth	no data	17.051 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	N/A	Intel HD Graphics for Previous Generation Intel Processors
Clear Video	no data	+
Clear Video HD	no data	+
Graphics max frequency	no data	766 MHz

Graphics interfaces

Available interfaces and connections of Xeon E5345 and Core i5-520M integrated GPUs.

Number of displays supported

no data

2

Peripherals

Specifications and connection of peripherals supported by Xeon E5345 and Core i5-520M.

PCIe version	no data	2.0
PCI Express lanes	no data	16

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.

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Pros & cons summary

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Performance score	1.18	1.08
Recency	14 November 2006	7 January 2010
Physical cores	4	2
Chip lithography	65 nm	32 nm
Power consumption (TDP)	80 Watt	35 Watt

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Should you still have questions on choice between Xeon E5345 and Core i5-520M, ask them in Comments section, and we shall answer.

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