A6-6400K vs FX-8120

VS

Aggregate performance score

FX-8120
2011
8 cores / 8 threads, 125 Watt
4.31
+340%

FX-8120 outperforms A6-6400K by a whopping 340% based on our aggregate benchmark results.

Primary details

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

Place in the ranking13802499
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorDesktop processor
Seriesno dataAMD A-Series (Desktop)
Power efficiency3.141.37
Architecture codenameZambezi (2011−2012)Richland (2013−2014)
Release date12 October 2011 (13 years ago)1 June 2013 (11 years ago)

Detailed specifications

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 cores8 (Octa-Core)2 (Dual-core)
Threads82
Base clock speed3.1 GHz3.9 GHz
Boost clock speed4 GHz4.1 GHz
L1 cache384 KB96 KB
L2 cache8192 KB1024 KB
L3 cache8192 KB0 KB
Chip lithography32 nm32 nm
Die size315 mm2246 mm2
Maximum core temperature61 °C70 °C
Maximum case temperature (TCase)no data70 °C
Number of transistors1,200 million1,178 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplier++
P0 Vcore voltageMin: 1.0125 V - Max: 1.4125 Vno 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 configuration11
SocketAM3+FM2
Power consumption (TDP)125 Watt65 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 extensionsno dataMMX, SSE1-4a, AES, ABM, AVX, BMI1, AMD64, VT, EVP, Turbo Core 3.0
AES-NI++
FMA+FMA4
AVX++
PowerNow-+
PowerGating-+
VirusProtect-+

Virtualization technologies

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

AMD-V++
IOMMU 2.0-+

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 typesDDR3DDR3-1866
Max memory channelsno data2

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataAMD Radeon HD 8470D
Number of pipelinesno data192
Enduro-+
Switchable graphics-+
UVD-+
VCE-+

Graphics interfaces

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

DisplayPort-+
HDMI-+

Graphics API support

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

DirectXno dataDirectX® 11

Peripherals

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

PCIe versionn/a2.0

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.


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 4.31
+340%
A6-6400K 0.98

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

FX-8120 6594
+338%
A6-6400K 1504

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

FX-8120 411
+0.2%
A6-6400K 410

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

FX-8120 1523
+164%
A6-6400K 576

Gaming performance

Pros & cons summary


Performance score 4.31 0.98
Recency 12 October 2011 1 June 2013
Physical cores 8 2
Threads 8 2
Power consumption (TDP) 125 Watt 65 Watt

FX-8120 has a 339.8% higher aggregate performance score, and 300% more physical cores and 300% more threads.

A6-6400K, on the other hand, has an age advantage of 1 year, and 92.3% lower power consumption.

The FX-8120 is our recommended choice as it beats the A6-6400K in performance tests.


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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AMD FX-8120
FX-8120
AMD A6-6400K
A6-6400K

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Community ratings

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4.1 954 votes

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Questions & comments

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