A6-6400K vs Xeon E5-2678 v3

Primary details

Comparing Xeon E5-2678 v3 and A6-6400K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	819	2501
Place by popularity	not in top-100	not in top-100
Market segment	Server	Desktop processor
Series	Xeon	AMD A-Series (Desktop)
Power efficiency	7.32	1.38
Architecture codename	Haswell (2013−2015)	Richland (2013−2014)
Release date	2015 (9 years ago)	1 June 2013 (11 years ago)

Detailed specifications

Xeon E5-2678 v3 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	12 (Dodeca-Core)	2 (Dual-core)
Threads	24	2
Base clock speed	2.5 GHz	3.9 GHz
Boost clock speed	3.3 GHz	4.1 GHz
L1 cache	384 KB	96 KB
L2 cache	3072 KB	1024 KB
L3 cache	30 MB	0 KB
Chip lithography	22 nm	32 nm
Die size	356 mm2	246 mm2
Maximum core temperature	no data	70 °C
Maximum case temperature (TCase)	84 °C	70 °C
Number of transistors	5,560 million	1,178 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	-	+

Compatibility

Information on Xeon E5-2678 v3 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	2	1
Socket	LGA2011-3	FM2
Power consumption (TDP)	120 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2678 v3 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	+	+
PowerNow	-	+
PowerGating	-	+
VirusProtect	-	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	no data
TSX	+	-

Security technologies

Xeon E5-2678 v3 and A6-6400K technologies aimed at improving security, for example, by protecting against hacks.

TXT

+

no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-2678 v3 and A6-6400K are enumerated here.

AMD-V	-	+
VT-d	+	no data
VT-x	+	no data
IOMMU 2.0	-	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-2678 v3 and A6-6400K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3, DDR4	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	-	+
Switchable graphics	-	+
UVD	-	+
VCE	-	+

Graphics interfaces

Available interfaces and connections of Xeon E5-2678 v3 and A6-6400K integrated GPUs.

DisplayPort	-	+
HDMI	-	+

Graphics API support

APIs supported by Xeon E5-2678 v3 and A6-6400K integrated GPUs, sometimes API versions are included.

DirectX

no data

DirectX® 11

Peripherals

Specifications and connection of peripherals supported by Xeon E5-2678 v3 and A6-6400K.

PCIe version	3.0	2.0
PCI Express lanes	40	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.

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Pros & cons summary

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Performance score	9.28	0.95
Physical cores	12	2
Threads	24	2
Chip lithography	22 nm	32 nm
Power consumption (TDP)	120 Watt	65 Watt

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Should you still have questions on choice between Xeon E5-2678 v3 and A6-6400K, ask them in Comments section, and we shall answer.

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