Core 2 Duo E4500 vs Athlon II X2 255

Primary details

Comparing Athlon II X2 255 and Core 2 Duo E4500 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2679	2936
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.02	no data
Market segment	Desktop processor	Desktop processor
Power efficiency	1.08	0.67
Architecture codename	Regor (2009−2013)	Allendale (2006−2009)
Release date	25 January 2010 (14 years ago)	July 2007 (17 years ago)
Launch price (MSRP)	$60	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Athlon II X2 255 and Core 2 Duo E4500 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	2 (Dual-core)	2 (Dual-core)
Threads	2	2
Base clock speed	3.1 GHz	2.2 GHz
Boost clock speed	3.1 GHz	2.2 GHz
Bus rate	no data	800 MHz
L1 cache	128 KB	64 KB
L2 cache	1 MB	2 MB
L3 cache	0 KB	0 KB
Chip lithography	45 nm	65 nm
Die size	117 mm2	111 mm2
Maximum core temperature	no data	73 °C
Number of transistors	410 million	167 million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	no data	0.85V-1.5V

Compatibility

Information on Athlon II X2 255 and Core 2 Duo E4500 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	1	1
Socket	AM3	LGA775
Power consumption (TDP)	65 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Athlon II X2 255 and Core 2 Duo E4500. You'll probably need this information if you require some particular technology.

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

Security technologies

Athlon II X2 255 and Core 2 Duo E4500 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 Athlon II X2 255 and Core 2 Duo E4500 are enumerated here.

VT-x

no data

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Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon II X2 255 and Core 2 Duo E4500. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR3

DDR1, DDR2, DDR3

Peripherals

Specifications and connection of peripherals supported by Athlon II X2 255 and Core 2 Duo E4500.

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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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	0.74	0.46
Chip lithography	45 nm	65 nm

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Should you still have questions on choice between Athlon II X2 255 and Core 2 Duo E4500, ask them in Comments section, and we shall answer.

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