Athlon 64 X2 3800+ vs Athlon II X4 640

Primary details

Comparing Athlon II X4 640 and Athlon 64 X2 3800+ processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2199	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.92	no data
Market segment	Desktop processor	Desktop processor
Power efficiency	1.40	no data
Architecture codename	Propus (2009−2011)	Manchester (2005−2006)
Release date	11 May 2010 (14 years ago)	August 2005 (19 years ago)
Launch price (MSRP)	$80	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Athlon II X4 640 and Athlon 64 X2 3800+ 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	4 (Quad-Core)	2 (Dual-core)
Threads	4	2
Base clock speed	3 GHz	no data
Boost clock speed	3 GHz	2 GHz
L1 cache	128 KB (per core)	256K
L2 cache	512 KB (per core)	512 KB
L3 cache	0 KB	0 KB
Chip lithography	45 nm	90 nm
Die size	169 mm2	220 mm2
Number of transistors	300 million	154 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Athlon II X4 640 and Athlon 64 X2 3800+ 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	939
Power consumption (TDP)	95 Watt	89 Watt

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon II X4 640 and Athlon 64 X2 3800+. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR3

no data

Peripherals

Specifications and connection of peripherals supported by Athlon II X4 640 and Athlon 64 X2 3800+.

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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Physical cores	4	2
Threads	4	2
Chip lithography	45 nm	90 nm
Power consumption (TDP)	95 Watt	89 Watt

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Should you still have questions on choice between Athlon II X4 640 and Athlon 64 X2 3800+, ask them in Comments section, and we shall answer.

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