Core 2 Duo E6420 vs Xeon E5205

Primary details

Comparing Xeon E5205 and Core 2 Duo E6420 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2850	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Server	Desktop processor
Power efficiency	0.77	no data
Architecture codename	no data	Conroe (2006−2007)
Release date	1 October 2007 (17 years ago)	April 2007 (17 years ago)

Detailed specifications

Xeon E5205 and Core 2 Duo E6420 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	2 (Dual-core)
Threads	no data	2
Base clock speed	1.86 GHz	2.13 GHz
Boost clock speed	no data	2.13 GHz
Bus rate	no data	1066 MHz
L1 cache	no data	64 KB
L2 cache	no data	4 MB
L3 cache	6 MB L2 Cache	0 KB
Chip lithography	45 nm	65 nm
Die size	no data	111 mm2
Maximum core temperature	66 °C	60 °C
Number of transistors	no data	167 million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	0.95V-1.212V	0.85V-1.5V

Compatibility

Information on Xeon E5205 and Core 2 Duo E6420 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	1
Socket	LGA771	PLGA775
Power consumption (TDP)	65 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5205 and Core 2 Duo E6420. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	-
Hyper-Threading Technology	-	-
Idle States	+	+
Thermal Monitoring	-	+
Demand Based Switching	+	-
FSB parity	-	-

Security technologies

Xeon E5205 and Core 2 Duo E6420 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	-
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5205 and Core 2 Duo E6420 are enumerated here.

VT-x

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5205 and Core 2 Duo E6420. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

no data

DDR1, DDR2, DDR3

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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Chip lithography

45 nm

65 nm

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Should you still have questions on choice between Xeon E5205 and Core 2 Duo E6420, ask them in Comments section, and we shall answer.

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