Xeon E5603 vs E5440

Primary details

Comparing Xeon E5440 and Xeon E5603 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2142	2322
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	0.13
Market segment	Server	Server
Power efficiency	1.76	1.44
Architecture codename	no data	Westmere-EP (2010−2011)
Release date	1 January 2008 (16 years ago)	14 February 2011 (13 years ago)
Launch price (MSRP)	no data	$286

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E5440 and Xeon E5603 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	no data	4 (Quad-Core)
Threads	no data	4
Base clock speed	2.83 GHz	1.6 GHz
Boost clock speed	no data	1.6 GHz
L1 cache	no data	64 KB (per core)
L2 cache	no data	256 KB (per core)
L3 cache	12 MB L2 Cache	4 MB (shared)
Chip lithography	45 nm	32 nm
Die size	no data	239 mm2
Maximum core temperature	67 °C	no data
Number of transistors	no data	1,170 million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	0.85V-1.35V	no data

Compatibility

Information on Xeon E5440 and Xeon E5603 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	no data	2
Socket	LGA771	FCLGA1366,LGA1366
Power consumption (TDP)	80 Watt	80 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5440 and Xeon E5603. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.2
AES-NI	-	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	-
Hyper-Threading Technology	-	-
Idle States	+	+
Thermal Monitoring	+	-
Demand Based Switching	+	+
PAE	no data	40 Bit
FSB parity	+	no data

Security technologies

Xeon E5440 and Xeon E5603 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5440 and Xeon E5603 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5440 and Xeon E5603. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	no data	DDR3
Maximum memory size	no data	288 GB
Max memory channels	no data	3
Maximum memory bandwidth	no data	25.6 GB/s
ECC memory support	-	+

Peripherals

Specifications and connection of peripherals supported by Xeon E5440 and Xeon E5603.

PCIe version

no data

2.0

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	1.49	1.22
Recency	1 January 2008	14 February 2011
Chip lithography	45 nm	32 nm

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Should you still have questions on choice between Xeon E5440 and Xeon E5603, ask them in Comments section, and we shall answer.

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