Core 2 Duo E4300 vs Athlon II X2 255

Primary details

Comparing Athlon II X2 255 and Core 2 Duo E4300 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	2609	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.02	no data
Market segment	Desktop processor	Desktop processor
Architecture codename	Regor (2009−2013)	Allendale (2006−2009)
Release date	25 January 2010 (14 years ago)	July 2006 (18 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 E4300 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	no data
Boost clock speed	3.1 GHz	1.8 GHz
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	61 °C
Number of transistors	410 million	167 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Athlon II X2 255 and Core 2 Duo E4300 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	775
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 E4300. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)

no data

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon II X2 255 and Core 2 Duo E4300. 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 E4300.

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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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 Athlon II X2 255 and Core 2 Duo E4300, ask them in Comments section, and we shall answer.

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