A6-6400K vs Ryzen Threadripper PRO 5955WX

Primary details

Comparing Ryzen Threadripper PRO 5955WX and A6-6400K processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	113	2399
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	28.73	0.12
Market segment	Server	Desktop processor
Series	AMD Ryzen Threadripper	AMD A-Series (Desktop)
Architecture codename	Chagall PRO (2022)	Richland (2013−2014)
Release date	8 March 2022 (2 years ago)	1 June 2013 (11 years ago)
Current price	$1156	$84

Cost-effectiveness evaluation

Performance per price, higher is better.

Ryzen Threadripper PRO 5955WX has 23842% better value for money than A6-6400K.

Detailed specifications

Ryzen Threadripper PRO 5955WX 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	16 (Hexadeca-Core)	2 (Dual-core)
Threads	32	2
Base clock speed	4 GHz	3.9 GHz
Boost clock speed	4.5 GHz	4.1 GHz
L1 cache	64K (per core)	96 KB
L2 cache	512K (per core)	1024 KB
L3 cache	64 MB	0 KB
Chip lithography	7 nm	32 nm
Die size	4x 81 mm2	246 mm2
Maximum core temperature	no data	70 °C
Maximum case temperature (TCase)	95 °C	70 °C
Number of transistors	16,600 million	1,178 million
64 bit support	+	+
Windows 11 compatibility	+	-
Unlocked multiplier	No	Yes

Compatibility

Information on Ryzen Threadripper PRO 5955WX 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	WRX8	FM2
Power consumption (TDP)	280 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen Threadripper PRO 5955WX 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	no data	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 Ryzen Threadripper PRO 5955WX 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 Ryzen Threadripper PRO 5955WX and A6-6400K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-3200	DDR3-1866
Maximum memory size	2 TiB	no data
Max memory channels	no data	2
Maximum memory bandwidth	204.8 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	-	AMD Radeon HD 8470D
Number of pipelines	-	192
Enduro	-	+
Switchable graphics	-	1
UVD	-	+
VCE	-	+

Graphics interfaces

Available interfaces and connections of Ryzen Threadripper PRO 5955WX and A6-6400K integrated GPUs.

DisplayPort	-	+
HDMI	-	+

Graphics API support

APIs supported by Ryzen Threadripper PRO 5955WX and A6-6400K integrated GPUs, sometimes API versions are included.

DirectX	-	DirectX® 11
Vulkan	-	no data

Peripherals

Specifications and connection of peripherals supported by Ryzen Threadripper PRO 5955WX and A6-6400K.

PCIe version	4.0	2.0
PCI Express lanes	128	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.

Ryzen Threadripper PRO 5955WX outperforms A6-6400K by 3236% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	32.36	0.97
Recency	8 March 2022	1 June 2013
Physical cores	16	2
Threads	32	2
Chip lithography	7 nm	32 nm
Power consumption (TDP)	280 Watt	65 Watt

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Should you still have questions on choice between Ryzen Threadripper PRO 5955WX and A6-6400K, ask them in Comments section, and we shall answer.

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