Athlon X2 7550 vs Phenom II X2 B55

Primary details

Comparing Phenom II X2 B55 and Athlon X2 7550 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2655	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.02	no data
Market segment	Desktop processor	Desktop processor
Power efficiency	0.88	no data
Architecture codename	Callisto (2009−2010)	Kuma (2008−2009)
Release date	1 October 2009 (15 years ago)	December 2008 (15 years ago)
Launch price (MSRP)	$48	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Phenom II X2 B55 and Athlon X2 7550 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 GHz	no data
Boost clock speed	3 GHz	2.5 GHz
L1 cache	128 KB (per core)	128 KB (per core)
L2 cache	512 KB (per core)	512 KB (per core)
L3 cache	6 MB (shared)	2 MB (shared)
Chip lithography	45 nm	65 nm
Die size	258 mm2	285 mm2
Number of transistors	758 million	450 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Phenom II X2 B55 and Athlon X2 7550 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	AM2+
Power consumption (TDP)	80 Watt	95 Watt

Virtualization technologies

Virtual machine speed-up technologies supported by Phenom II X2 B55 and Athlon X2 7550 are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Phenom II X2 B55 and Athlon X2 7550. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR3

no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

On certain motherboards (Chipset feature)

no data

Peripherals

Specifications and connection of peripherals supported by Phenom II X2 B55 and Athlon X2 7550.

PCIe version

2.0

no data

Pros & cons summary

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Chip lithography	45 nm	65 nm
Power consumption (TDP)	80 Watt	95 Watt

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Should you still have questions on choice between Phenom II X2 B55 and Athlon X2 7550, ask them in Comments section, and we shall answer.

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