A6-6400K vs FX-8120

General info

Comparing FX-8120 and A6-6400K processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1265	2358
Place by popularity	not in top-100	not in top-100
Value for money	2.74	0.12
Market segment	Desktop processor	Desktop processor
Series	no data	AMD A-Series (Desktop)
Architecture codename	Zambezi (2011−2012)	Richland (2013−2014)
Release date	12 October 2011 (12 years old)	1 June 2013 (10 years old)
Current price	$74	$48

Value for money

Performance per price, higher is better.

FX-8120 has 2183% better value for money than A6-6400K.

Technical specs

FX-8120 and A6-6400K 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	3.9 GHz
Boost clock speed	4 GHz	4.1 GHz
L1 cache	384 KB	96 KB
L2 cache	8192 KB	1024 KB
L3 cache	8192 KB	0 KB
Chip lithography	32 nm	32 nm
Die size	315 mm2	246 mm2
Maximum core temperature	61 °C	70 °C
Maximum case temperature (TCase)	no data	70 °C
Number of transistors	1,200 million	1,178 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	Yes	Yes
P0 Vcore voltage	Min: 1.0125 V - Max: 1.4125 V	no data

Compatibility

Information on FX-8120 and A6-6400K 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+	FM2
Power consumption (TDP)	125 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by FX-8120 and A6-6400K. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	MMX, SSE1-4a, AES, ABM, AVX, BMI1, AMD64, VT, EVP, Turbo Core 3.0
AES-NI	+	+
FMA	+	FMA4
AVX	+	+
PowerTune	no data	-
TrueAudio	no data	-
PowerNow	no data	+
PowerGating	no data	+
Out-of-band client management	no data	-
VirusProtect	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by FX-8120 and A6-6400K are enumerated here.

AMD-V	+	+
IOMMU 2.0	no data	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by FX-8120 and A6-6400K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3-1866
Max memory channels	no data	2

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	AMD Radeon HD 8470D
Number of pipelines	no data	192
Enduro	no data	+
Switchable graphics	no data	1
UVD	no data	+
VCE	no data	+

Graphics interfaces

Available interfaces and connections of FX-8120 and A6-6400K integrated GPUs.

DisplayPort	no data	+
HDMI	no data	+

Graphics API support

APIs supported by FX-8120 and A6-6400K integrated GPUs, sometimes API versions are included.

DirectX

no data

DirectX® 11

Peripherals

Specifications and connection of peripherals supported by FX-8120 and A6-6400K.

PCIe version

n/a

2.0

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 A6-6400K by 339% based on our aggregated benchmark results.

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Advantages and disadvantages

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Performance score	4.30	0.98
Recency	12 October 2011	1 June 2013
Physical cores	8	2
Threads	8	2
Power consumption (TDP)	125 Watt	65 Watt

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Should you still have questions on choice between FX-8120 and A6-6400K, ask them in Comments section, and we shall answer.

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