Xeon E5440 vs X6550

Primary details

Comparing Xeon X6550 and Xeon E5440 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	2216	2039
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.16	0.38
Market segment	Server	Server
Release date	1 January 2010 (14 years ago)	1 January 2008 (16 years ago)
Current price	$77	$91

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon E5440 has 138% better value for money than Xeon X6550.

Detailed specifications

Xeon X6550 and Xeon E5440 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	8 (Octa-Core)	no data
Threads	16	no data
Base clock speed	2 GHz	2.83 GHz
Boost clock speed	2.4 GHz	no data
L3 cache	18 MB L3 Cache	12 MB L2 Cache
Chip lithography	45 nm	45 nm
Maximum core temperature	69 °C	67 °C
64 bit support	-	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No
VID voltage range	no data	0.85V-1.35V

Compatibility

Information on Xeon X6550 and Xeon E5440 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.

Socket	FCLGA1567	LGA771
Power consumption (TDP)	130 Watt	80 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon X6550 and Xeon E5440. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	1.0	-
Hyper-Threading Technology	+	-
Idle States	no data	+
Thermal Monitoring	no data	+
Demand Based Switching	no data	+
FSB parity	no data	+
Status	Discontinued	Discontinued

Security technologies

Xeon X6550 and Xeon E5440 technologies aimed at improving security, for example, by protecting against hacks.

TXT	no data	-
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon X6550 and Xeon E5440 are enumerated here.

VT-x	+	+
EPT	+	-

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.

E5440 outperforms X6550 by 22% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	1.25	1.53
Recency	1 January 2010	1 January 2008
Power consumption (TDP)	130 Watt	80 Watt

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Should you still have questions on choice between Xeon X6550 and Xeon E5440, ask them in Comments section, and we shall answer.

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