A4-9120 vs Athlon II X4 645

Primary details

Comparing Athlon II X4 645 and A4-9120 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2152	2636
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.30	no data
Market segment	Desktop processor	Laptop
Series	no data	Bristol Ridge
Power efficiency	1.47	4.84
Architecture codename	Propus (2009−2011)	Stoney Ridge (2016−2019)
Release date	21 September 2010 (14 years ago)	1 June 2017 (7 years ago)
Launch price (MSRP)	$80	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Athlon II X4 645 and A4-9120 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	3.1 GHz	2.2 GHz
Boost clock speed	3.1 GHz	2.5 GHz
L1 cache	128 KB (per core)	160 KB
L2 cache	512 KB (per core)	1 MB
L3 cache	0 KB	no data
Chip lithography	45 nm	28 nm
Die size	169 mm2	124.5 mm2
Maximum core temperature	no data	90 °C
Number of transistors	300 million	1200 Million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Athlon II X4 645 and A4-9120 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	no data
Socket	AM3	BGA
Power consumption (TDP)	95 Watt	10-15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Athlon II X4 645 and A4-9120. You'll probably need this information if you require some particular technology.

Instruction set extensions

no data

Virtualization,

Virtualization technologies

Virtual machine speed-up technologies supported by Athlon II X4 645 and A4-9120 are enumerated here.

AMD-V

-

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon II X4 645 and A4-9120. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR3

DDR4

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

AMD Radeon R2 (Stoney Ridge)

Peripherals

Specifications and connection of peripherals supported by Athlon II X4 645 and A4-9120.

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	1.48	0.77
Recency	21 September 2010	1 June 2017
Physical cores	4	2
Threads	4	2
Chip lithography	45 nm	28 nm
Power consumption (TDP)	95 Watt	10 Watt

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Should you still have questions on choice between Athlon II X4 645 and A4-9120, ask them in Comments section, and we shall answer.

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