A6-7400K vs Ryzen 9 3900X

Primary details

Comparing Ryzen 9 3900X and A6-7400K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	269	2441
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	20.87	no data
Market segment	Desktop processor	Desktop processor
Series	AMD Ryzen 9	no data
Power efficiency	15.55	1.50
Architecture codename	Matisse (Zen 2) (2019−2020)	Kaveri (2014−2015)
Release date	7 July 2019 (5 years ago)	31 July 2014 (10 years ago)
Launch price (MSRP)	$499	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Ryzen 9 3900X and A6-7400K 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	12 (Dodeca-Core)	2 (Dual-core)
Threads	24	2
Base clock speed	3.8 GHz	3.5 GHz
Boost clock speed	4.6 GHz	3.9 GHz
L1 cache	96K (per core)	128 KB
L2 cache	512K (per core)	1024 KB
L3 cache	64 MB	no data
Chip lithography	7 nm, 12 nm	28 nm
Die size	no data	245 mm2
Maximum core temperature	95 °C	70 °C
Maximum case temperature (TCase)	no data	72 °C
Number of transistors	19,200 million	2,411 million
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	+

Compatibility

Information on Ryzen 9 3900X and A6-7400K 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 (Uniprocessor)	1
Socket	AM4	FM2+
Power consumption (TDP)	125 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 3900X and A6-7400K. You'll probably need this information if you require some particular technology.

AES-NI	+	+
FMA	-	+
AVX	+	+
FRTC	-	+
FreeSync	-	+
TrueAudio	-	+
PowerNow	-	+
PowerGating	-	+
Out-of-band client management	-	+
VirusProtect	-	+
HSA	-	+
Precision Boost 2	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 3900X and A6-7400K are enumerated here.

AMD-V	+	+
IOMMU 2.0	-	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 3900X and A6-7400K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Dual-channel	DDR3-1866
Maximum memory size	128 GB	no data
Max memory channels	2	2
Maximum memory bandwidth	51.196 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	-	AMD Radeon R5 Graphics
iGPU core count	-	4
Number of pipelines	-	256
Enduro	-	+
Switchable graphics	-	+
UVD	-	+
VCE	-	+

Graphics interfaces

Available interfaces and connections of Ryzen 9 3900X and A6-7400K integrated GPUs.

DisplayPort	-	+
HDMI	-	+

Graphics API support

APIs supported by Ryzen 9 3900X and A6-7400K integrated GPUs, sometimes API versions are included.

DirectX	-	DirectX® 12
Vulkan	-	+

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 3900X and A6-7400K.

PCIe version	no data	3.0
PCI Express lanes	no data	16

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	20.54	1.03
Recency	7 July 2019	31 July 2014
Physical cores	12	2
Threads	24	2
Chip lithography	7 nm	28 nm
Power consumption (TDP)	125 Watt	65 Watt

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Should you still have questions on choice between Ryzen 9 3900X and A6-7400K, ask them in Comments section, and we shall answer.

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