A9-9420 vs FX-8120

Primary details

Comparing FX-8120 and A9-9420 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1303	2397
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.74	no data
Market segment	Desktop processor	Laptop
Series	no data	AMD Bristol Ridge
Architecture codename	Zambezi (2011−2012)	Stoney Ridge (2016−2019)
Release date	12 October 2011 (12 years ago)	31 May 2016 (8 years ago)
Current price	$68	$440

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

FX-8120 and A9-9420 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	8 (Octa-Core)	2 (Dual-core)
Threads	8	2
Base clock speed	3.1 GHz	3 GHz
Boost clock speed	4 GHz	3.6 GHz
L1 cache	384 KB	160 KB
L2 cache	8192 KB	1 MB (shared)
L3 cache	8192 KB	no data
Chip lithography	32 nm	28 nm
Die size	315 mm2	125 mm2
Maximum core temperature	61 °C	90 °C
Maximum case temperature (TCase)	no data	74 °C
Number of transistors	1,200 million	1,200 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	Yes	No
P0 Vcore voltage	Min: 1.0125 V - Max: 1.4125 V	no data

Compatibility

Information on FX-8120 and A9-9420 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+	FT4
Power consumption (TDP)	125 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by FX-8120 and A9-9420. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Single-Channel DDR4-2133, Virtualization,
AES-NI	+	+
FMA	+	+
AVX	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by FX-8120 and A9-9420 are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by FX-8120 and A9-9420. 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

Radeon R5

Peripherals

Specifications and connection of peripherals supported by FX-8120 and A9-9420.

PCIe version	n/a	3.0
PCI Express lanes	no data	8

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.

FX-8120 outperforms A9-9420 by 339% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	4.26	0.97
Recency	12 October 2011	31 May 2016
Physical cores	8	2
Threads	8	2
Chip lithography	32 nm	28 nm
Power consumption (TDP)	125 Watt	15 Watt

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Should you still have questions on choice between FX-8120 and A9-9420, ask them in Comments section, and we shall answer.

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